Frans P M J Groeneveld

Erasmus MC, Rotterdam, South Holland, Netherlands

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Publications (28)110.34 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: In the general population, erectile dysfunction (ED) is surrounded by a "taboo." Epidemiologists studying this problem have to be aware of the phenomenon of the "tip-of-the-iceberg." Our aim is to describe the iceberg phenomenon for ED and their help-seeking behavior in the general population during a period when public interest in ED heightened and waned after the introduction of the drug sildenafil. The data were obtained as part of a large longitudinal community-based study, i.e., the Krimpen study. With four rounds of data collection with an approximate 2.1 years interval, the local pharmacists provided data on medication use, whereas abstracts from the medical record and history were provided by the local general practitioners (GPs). The data from the questionnaires were entered into the Krimpen study database but were not communicated to the GPs. ED: according to the ICS-questionnaire, GP consultation: search of electronic medical dossier for ED or reports from any specialist, use of ED medication as delivered by the pharmacy. The age-standardized prevalence of ED is stable, i.e., around 40%. During the period 1995 to 2000, the incidence increased from 5% to 6.5%, then it stabilizes around 5% per year. The first-time use of ED medication increases exponentially between 1995 and 2000, then it stabilizes at about 3.5% per year. The number of GP consultations by men with ED increases up to 1999, after which it stabilizes at about 1.8% per year. We suggest that the availability and awareness of a new pharmacological option induced a change of behavior among GPs and their patients.
    Journal of Sexual Medicine 05/2010; 7(7):2547-53. DOI:10.1111/j.1743-6109.2010.01849.x · 3.15 Impact Factor
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    ABSTRACT: Incidence of OA rises steeply in women of age >50 years; the climacteric period for women. The simultaneous occurrence of these events suggests an association between OA and changes in female hormonal aspects. This systematic review studies the assumed association between OA and aspects concerning the fertile period (duration, endogenous hormones, age at menarche/menopause) and the menopause [menopausal status, years since menopause (YSM) and surgical menopause]. Medline and EMBASE were searched for articles assessing associations between hand/hip/knee OA and female hormonal aspects. Methodological quality was assessed systematically, and results were summarized in a best-evidence synthesis. Sixteen studies were included in the present study. For most hormonal aspects no association was found. Conflicting evidence was found for an association of age at menarche with Herberden's nodes (HNs) and hand ROA, YSM with knee ROA and ovariectomy with hip OA. An increased risk was seen for low estradiol serum levels in the early follicular phase with incident knee ROA, age at menarche being < or =11 years old with total hip replacement, being post-menopausal and YSM with the presence of HN. A protective effect was seen for age at menopause being > or =52 years with total knee replacement. Evidence level was limited for all. The assumed relationship between the female hormonal aspects and OA was not clearly observed in this review. The relationship is perhaps too complex, or other aspects, yet to be determined, play a role in the increased incidence in women aged >50 years.
    Rheumatology (Oxford, England) 07/2009; 48(9):1160-5. DOI:10.1093/rheumatology/kep194 · 4.44 Impact Factor
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    J L H Ruud Bosch, Chris H Bangma, Frans P M J Groeneveld, Arthur M Bohnen
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    ABSTRACT: We used the database of a longitudinal community-based study to investigate whether real changes in prostate volume (PV) (ie, changes greater than the combination of intra- and interobserver variation of volume measurement) corresponded with significant changes in symptom severity. In a community-based study of men aged 50-78 yr, the International Prostate Symptom Score (IPSS) and PV were measured at baseline and at 4.2-yr follow-up. Of 1417 men, 864 completed both rounds. A significant change in IPSS was defined as a change of > or = 4 points. A real change in PV was defined as a percent change of > or = 26%, or an absolute change of > or = 10 cc. After 4.2 yr, about 20% of the men had experienced a significant increase in IPSS and 16-23% had a real increase in PV. The age-adjusted odds ratio for a significant increase in symptom severity, which contrasts men who have a real increase in PV and men who do not show such an increase, is 1.38 (95%CI, 1.05-1.85]. The age-adjusted odds ratio for a significant decrease in symptom severity, which contrasts men with a real increase in PV and those without such an increase, is 1.50 (95%CI, 1.11-2.85). Benign prostatic hyperplasia can be characterised as a progressive disease in a certain proportion of men older than 50 yr. Men with growing prostates are at a greater risk of symptomatic deterioration. Men who have prostates that do not grow significantly are more likely to improve symptomatically.
    European Urology 04/2008; 53(4):819-25; discussion 825-7. DOI:10.1016/j.eururo.2007.08.042 · 12.48 Impact Factor
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    ABSTRACT: This report from the Krimpen study explored the relationship between the determinants for worsening of erectile function in the open population. In Krimpen aan den IJssel (a municipality near Rotterdam), all men aged 50-75 years, without cancer of the prostate or the bladder and without a history of radical prostatectomy or neurogenic bladder disease, were invited to participate in June 1995. The response rate was 50%. The follow-up was until June 2004. At baseline a visit to a health centre for the measurement of urinalysis, height, weight and blood pressure was part of the ongoing study. During baseline and at the first follow-up, second follow-up and third follow-up, a self-administered booklet consisting of a compilation of validated questionnaires including the International Continence Society male sex questionnaire was completed. At the urology outpatient clinic, a urological workup was measured. All participants were asked to keep a frequency-volume chart for 3 days. A multivariate Cox-proportional hazard model was constructed to find the determinants of worsening of erectile function, correcting for age. Total follow-up time was 4948 person years consisting of 975 men. During follow-up, 441 events of worsening of erectile function occurred. Multivariate Cox-proportional hazard ratio analyses showed that body mass index (BMI), irritative lower urinary tract symptoms, diabetes mellitus, chronic obstructive pulmonary disease (COPD) and sexual inactivity were determinants with significant hazard ratios. In addition to age, determinants for a deterioration of erectile function based on multivariate longitudinal analyses are BMI, diabetes mellitus, COPD, sexual inactivity and irritative IPSS. The mechanism of various determinants is discussed.
    International Journal of Andrology 01/2008; 32(2):166-75. DOI:10.1111/j.1365-2605.2007.00830.x · 3.21 Impact Factor
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    Arthur M Bohnen, Frans P Groeneveld, J L H Ruud Bosch
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    ABSTRACT: Serum prostate-specific antigen (PSA) is considered a proxy for prostate volume (PV). This study investigates which range of PSA values has the best utility in the determination of PV (<30 cc, at 30, 40, and 50 cc), and whether PSA performs better than digital rectal examination (DRE) when estimating PV. In a population-based follow-up study of 1688 men in Krimpen aan den IJssel, The Netherlands, at baseline we estimated PV by DRE and by transrectal planimetric ultrasound (TRUS), in addition to measuring PSA. Men who tested positive for prostate cancer (PCa) at baseline and at 2 and 4 yr of follow-up were excluded from the analyses (n=142). Of the men without PCa, PSA and PV data were available in 1524 participants. Of all 1524 men analysed, 76.7% had a PSA of 0-2.0, 15.0% had a PSA of 2.1-4.0, and 8.3% a PSA>4. Low PSA ranges (0-2 and 2.1-4.0) discriminate better for a PV of 30 cc (eg, in men with a PSA range of 2.1-2.5 ng/ml there was a 72% chance of having a PV>30 cc). Higher ranges of PSA (>4.0) discriminate better for a PV>40 or 50 cc. (eg, in men with a PSA in the range of 4.1-7.0 ng/ml there was a 69% chance of having a PV>40 cc and in men with a PSA>10 ng/ml there was a 75% chance of a PV>50 cc). The receiver operating curve (ROC) for the performance of PSA in estimating a PV>30 cc shows an area under the curve (AUC) of 0.79, denoting reasonable discrimination, and AUCs of 0.86 and 0.92, denoting good discrimination of PVs>40 cc and >50 cc, respectively. PSA performed significantly better than DRE at estimating PV. Multiple regression analysis shows that both DRE and an interaction term for age and PSA provided minimal additional information beyond PSA in the prediction of PV; however, their contribution is numerically minimal/not clinically meaningful. In men for whom a diagnosis of PCa has been ruled out, PSA can be used to detect an enlarged prostate (>30 cc and with more accuracy PV>40 or 50 cc). More precision in estimating PV can be obtained when using a formula that contains PSA, age, DRE, and an interaction term between age and PSA; however, the clinical advantage of the formula over PSA alone is only modest as shown by the ROC curves. Thus, for clinicians looking for an easy and fast way to identify patients with an enlarged prostate, PSA is a good approximation for men without PCa.
    European Urology 06/2007; 51(6):1645-52; discussion 1652-3. DOI:10.1016/j.eururo.2007.01.084 · 12.48 Impact Factor
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    ABSTRACT: Kok ET, Bohnen AM, Groeneveld FP, Busschbach JJ, Blanker MH, Bosch JL. Veranderingen in ziektespecifieke en generieke kwaliteit van leven na veranderde plasklachten bij oudere mannen. Huisarts Wet 2007;50(6):248-53. Vraagstelling Zijn veranderingen in plasklachten (LUTS) gerelateerd aan veranderingen in ziektespecifieke en generieke kwaliteit van leven? En zo ja, in welke mate? Methode Onderzoek met een longitudinale opzet onder mannen tussen de 50 en 78 jaar te Krimpen aan den IJssel. De gegevens zijn verzameld met verschillende vragenlijsten en een aantal urologische metingen. Met multivariate lineaire regressieanalyses bepaalden we de relatie tussen een verandering in kwaliteit van leven, IPSS tijdens baseline, de verandering in plasklachten tussen baseline en follow-up en leeftijd. Resultaten Hoewel de klachtenscore (IPSS) toenam in de tijd, verbeterde de gemiddelde generieke kwaliteit van leven. Bijna eenderde van de mannen rapporteerde een betere ziektespecifieke kwaliteit van leven. Multivariate lineaire regressieanalyses toonden een verband aan tussen de ziektespecifieke kwaliteit van leven en de IPSS-baseline, veranderingen in IPSS (tussen baseline en follow-up) en leeftijd. De generieke kwaliteit van leven was niet gerelateerd aan deze parameters. Conclusie Veranderingen in LUTS hebben gemiddeld genomen maar een kleine invloed op de ziektespecifieke kwaliteit van leven van mannen tussen de 50 en 78 jaar oud en bijna geen invloed op de generieke kwaliteit van leven van deze mannen. Kok ET, Bohnen AM, Groeneveld FP, Busschbach JJ, Blanker MH, Bosch JL. Changes in disease specific and generic quality of life related to changes in lower urinary tract symptoms: the Krimpen study. Huisarts Wet 2007;50(6):248-53. Purpose We determined if and to what extent longitudinal changes in lower urinary tract symptoms are related to disease specific and generic quality of life in men. Material and methods A longitudinal, population based study with a followup of 4.2 years was done in 1,688 who were 50 to 79 years old. Data were collected through self-administered questionnaires, including the Sickness Impact Profile (3 domains), Inventory of Subjective Health, International Prostate Symptom Score (I-PSS) and Benign Prostatic Hyperplasia Impact Index. Moreover, they completed various physical and urological measurements. Mean I-PSS and quality of life scores at baseline and followup were analyzed for certain subgroups. Multiple linear regression was used to determine the change in quality of life in relation to baseline I-PSS, I-PSS changes between baseline and followup, and age. Results Although mean I-PSS increased with time, the average generic quality of life improved and almost a third of the men reported better disease specific quality of life. Multiple linear regression revealed that disease specific quality of life was associated with I-PSS at baseline, changes in I-PSS between baseline and followup, and age. However, generic quality of life scores were not associated with these parameters. Conclusions Changes in lower urinary tract symptoms severity had little impact on disease specific quality of life in 50 to 79-year-old men or on generic quality of life during the 4.2-year followup. kwaliteit van leven-mannen-onderzoek-plasklachten
    Huisarts en wetenschap 06/2007; 50(6). DOI:10.1007/BF03085198
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    ABSTRACT: The present study aims to determine the influence of coping on quality of life (QOL) in elderly men developing lower urinary tract symptoms (LUTS). Longitudinal population-based study with a follow-up period of 6.5 years on 1,688 men aged 50-78 years. Data were collected through self-administered questionnaires, including the Sickness Impact Profile (SIP, three domains), Inventory of Subjective Health (ISH), International Prostate Symptom Score (IPSS), and the Utrecht Coping List (UCL). Various physical and urological measurements were completed. Multiple linear regressions were used to determine the change in QOL in men with incident LUTS in relation to coping behavior. Overall no significant association is found between changes in LUTS with a change in QOL. However, a positive change in QOL is significantly associated with a change in LUTS when men use the coping style active problem solving and a negative relation exists with coping style reassuring thoughts. Different coping styles have a different impact on the relation between a change in LUTS and a change in generic QOL in community-dwelling elderly men. This makes a future exploration of the clinical treatment possibilities warranted.
    Urologia Internationalis 02/2007; 79(3):226-30. DOI:10.1159/000107954 · 1.15 Impact Factor
  • E.T. Kok, Arthur M. Bohnen, J.L.H.R. Bosch, Siep Thomas, Frans P. M. J. Groeneveld
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    ABSTRACT: To identify patient characteristics associated with general practitioner's (GP) initial treatment decision in men with lower urinary tract symptoms (LUTS) and to test the hypothesis that a different coping style of patients results in different GP behaviour regarding treatment. A longitudinal, population-based study with a follow-up period of 6.5 years was conducted among 1688 men aged 50-78 years old. Data were collected on quality of life, symptom severity based on the International prostate symptom score (IPSS) and coping. Information on primary care seeking and GP's initial management during 2 years of follow-up of all participants was collected from the general practitioners record. Data were obtained of 68 men, without a history of LUTS, who had a first GP visit for LUTS during the study period. In 54.4% of the cases the GP prescribed medication, independent of symptom severity. In the group of men with a bad disease-specific QOL those with a high passive-reaction-pattern were treated less frequently than those with a low passive-reaction-pattern. Findings from this quantitative study are consistent with the hypothesis that different coping styles of patients may result in different GP behaviour regarding treatment. The use of the coping style passive-reaction-pattern has a large influence on GP's initial management in men with LUTS.
    Quality of Life Research 11/2006; 15(8). DOI:10.1007/s11136-006-0013-0 · 2.86 Impact Factor
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    ABSTRACT: To determine which factors predict seeking of primary care among men with lower urinary tract symptoms (LUTS). A longitudinal, population-based study with a follow-up period of 6.5 yr was conducted among 1688 men aged 50-78 yr. The following data were collected: prostate volume (using transrectal ultrasonometry), urinary flow rate, ultrasound-estimated postvoid residual urine volume, generic and disease-specific quality of life (QOL), and symptom severity (International Prostate Symptom Score [IPSS]). Information on the seeking of primary care by all participants during 2 yr of follow-up was collected from the general practitioner's (GP) record using a computerised search engine and a manual check of electronically selected files. Prostate volume, postvoid residual volume, IPSS, and social generic QOL are important determinants of first GP consultation in men with LUTS. Measurements (physical urologic parameters) and self-reported items (symptom severity and QOL) contribute almost equally to GP consultation in these men. Both measurements of prostate volume and postvoid residual urine volume and self-reported information about symptoms or QOL can help to select those who will benefit from medical care and to reassure those men not likely to need help in the near future.
    European Urology 11/2006; 50(4). DOI:10.1016/j.eururo.2006.03.024 · 12.48 Impact Factor
  • R. Bosch, F. Groeneveld, A. Bohnen
    European Urology Supplements 04/2006; 5(2):158-158. DOI:10.1016/S1569-9056(06)60548-4 · 3.37 Impact Factor
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    ABSTRACT: We determined if and to what extent longitudinal changes in lower urinary tract symptoms are related to disease specific and generic quality of life in men. A longitudinal, population based study with a followup of 4.2 years was done in 1,688 who were 50 to 79 years old. Data were collected through self-administered questionnaires, including the Sickness Impact Profile (3 domains), Inventory of Subjective Health, International Prostate Symptom Score (I-PSS) and Benign Prostatic Hyperplasia Impact Index. Moreover, they completed various physical and urological measurements. Mean I-PSS and quality of life scores at baseline and followup were analyzed for certain subgroups. Multiple linear regression was used to determine the change in quality of life in relation to baseline I-PSS, I-PSS changes between baseline and followup, and age. Although mean I-PSS increased with time, the average generic quality of life improved and almost a third of the men reported better disease specific quality of life. Multiple linear regression revealed that disease specific quality of life was associated with I-PSS at baseline, changes in I-PSS between baseline and followup, and age. However, generic quality of life scores were not associated with these parameters. Changes in lower urinary tract symptoms severity had little impact on disease specific quality of life in 50 to 79-year-old men or on generic quality of life during the 4.2-year followup.
    The Journal of Urology 10/2005; 174(3):1055-8. DOI:10.1097/01.ju.0000169256.74421.e5 · 3.75 Impact Factor
  • J L H R Bosch, A M Bohnen, F P Groeneveld, R Bernsen
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    ABSTRACT: Prostate volume and its changes are important parameters in studies of the natural history of benign prostatic hyperplasia (BPH), for prediction of treatment effect and the risk of adverse outcomes. The validity of three calliper-based transrectal ultrasound (TRUS) methods and digital rectal examination (DRE) is compared to transrectal planimetric prostate ultrasonometry. Data were collected from 1,688 population-based men aged 50-78 years. Measurements included DRE, TRUS using the planimetric method, and three different calliper-based TRUS methods for the estimation of prostate volume. After 2.1 and 4.2 years these measurements were repeated. The agreement between these methods and the ability to discriminate between prostates with volumes above or below a certain cut-off was analyzed. The performance of the different methods to measure changes in prostate volume with age was also studied. All three ultrasound-based methods showed good discrimination compared to the planimetric method. However, the agreement between planimetric volumetry and the other ultrasound methods and DRE is poor. In this study, 22.6% of the men had a real increase in prostate volume after 4.2 years, using the planimetric technique of transrectal ultrasonometry. Only a small percentage of the men (<1.5%) has a real decrease in prostate volume. The alternative measurement methods had a low predictive value for changes in prostate volume with age as measured with the planimetric method. Calliper-based ultrasonometry and DRE show poor agreement with planimetric volume measurement of the prostate. Changes in prostate volume as determined by the planimetric method are poorly detected by the alternative methods. (c) 2004 Wiley-Liss, Inc.
    The Prostate 03/2005; 62(4):353-63. DOI:10.1002/pros.20144 · 3.57 Impact Factor
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    ABSTRACT: To describe loss to follow-up (LTFU) in a longitudinal community-based study on urogenital tract dysfunction in older men. A cohort study of men recruited from a Dutch municipality was performed. A baseline study and two follow-up rounds--all with questionnaires and additional measurements--were performed with, on average, 2.1-year intervals. Baseline characteristics were compared between participants and non-participants in the first and in the second follow-up study. The response rates in the first and in the second follow-up were 78.0 and 80.0%, respectively. Various characteristics were found to be related to LTFU (i.e., more than 5% difference in response rate). Lower urinary tract symptoms were related to LTFU in the first and second follow-up. Sexual dysfunction was related to LTFU only in the second follow-up. Adjustment for confounders yielded odds ratios for the primary outcome variables (lower urinary tract symptoms, sexual dysfunction, and health status) that approximated the value of 1. LTFU according to these variables was different in men with and without other chronic illnesses. LTFU seems not to be related to the primary outcome variables in this study. Describing response patterns in longitudinal studies is important, especially in studies involving older participants, as often is the case in urological research.
    Urologia Internationalis 02/2005; 75(1):30-7. DOI:10.1159/000085924 · 1.15 Impact Factor
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    ABSTRACT: We evaluated circadian urine production and its determinants in a large population based sample of older men. We collected data on 1,688 men 50 to 78 years old, without radical prostatectomy, prostate or bladder cancer, neurogenic bladder disease or negative advice from their general practitioner, recruited from the population of Krimpen, the Netherlands. Measurements consisted of self-administered questionnaires, including the International Prostate Symptom Score, a 3-day frequency-volume chart, transrectal prostatic ultrasound, uroflowmetry and post-void residual volume. Hourly urine production was determined and urine production day-to-night ratio was calculated from the frequency-volume chart. Men younger than 65 years showed a clear circadian urine production pattern, whereas in older men this pattern was less clear. Smoking, use of diuretic drugs, post-void residual and 24-hour polyuria reinforced the circadian pattern, in favor of daytime urine production. The urine production day-to-night ratio was not associated with prostate enlargement, reduced urinary flow rate, body weight, hypertension, cardiac symptoms, diabetes mellitus, use of antidepressants, cardiac or hypnotic drugs. Urine production in men younger than 65 years showed a clear circadian pattern in contrast to men older than 65 years. These data can be used as a reference when describing urine production patterns in select populations. In daily practice frequency-volume charts can be used to determine urine production. This method is inexpensive, easy to use and provides valid information on urine production in a natural environment.
    The Journal of Urology 11/2002; 168(4 Pt 1):1453-7. DOI:10.1097/01.ju.0000030263.59566.b0 · 3.75 Impact Factor
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    ABSTRACT: To study health status and its correlates in older men with and without lower urogenital tract dysfunction. Cross-sectional population-based study on 1688 men aged 50-78 years without bladder or prostate cancer, radical prostatectomy, neurogenic bladder dysfunction or a negative advice from their general practitioner. Data were collected through self-administered questionnaires, including Sickness Impact Profile (SIP, three domains), Inventory of Subjective Health (ISH), International Prostate Symptom Score (IPSS) and International Continence Society (ICS) Male Sex questionnaire, medication use, socio-economic and lifestyle factors. Additional information was collected by measurement of blood pressure, transrectal ultrasonography of the prostate and uroflowmetry. Four health status domains were analyzed using the ISH and three domains of the SIP. Lower urinary tract symptoms (LUTS) were categorised using IPSS, erectile and ejaculatory dysfunction were defined using the ICS questionnaire. All urogenital characteristics and parameters were related to at least two of the health status domains. Multivariate regression analyses yielded that LUTS and cardiac symptoms were associated with suboptimal scores of all four domains. Chronic obstructive pulmonary disease and drugs for abdominal symptoms were related to three domains; erectile and ejaculatory dysfunction, muskuloskeletal or psycho(ana)leptic drugs and marital status to two domains. The impact of LUTS on health status was equally important as the impact of cardiac symptoms. The impact of sexual dysfunction was smaller than expected. Longitudinal studies are needed to determine how health status and illnesses interact.
    European Urology 07/2002; 41(6):602-7. DOI:10.1016/S0302-2838(02)00172-0 · 12.48 Impact Factor
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    ABSTRACT: To determine the normal values of voided volumes and explore the relation between bladder capacity and lower urinary tract symptoms (LUTS) in elderly men. Data were collected from 1688 men 50 to 78 years old recruited from the population of Krimpen aan den IJssel, The Netherlands. Measurements included self-administered questionnaires (including the International Prostate Symptom Score), a 3-day frequency volume chart, transrectal ultrasonography of the prostate, uroflowmetry, and postvoid residual volume determination. The 24-hour voided volumes were independent of age (median 1506 mL; 25th to 75th percentiles 1160 to 1950). The average volume per void and functional bladder capacity (FBC, defined as the largest single voided volume) declined with advancing age. Moreover, FBC was lower in men with a reduced maximum flow rate (less than 15 mL/s) and independent of the postvoid residual volume. Multivariate analyses showed no significant effect of prostate enlargement on the FBC. FBC was strongly related to LUTS: a low FBC coincided with higher International Prostate Symptom Scores. Multivariate logistic regression analyses revealed that the presence of moderate to severe symptoms (International Prostate Symptom Score greater than 7) was independent of prostate volume, but dependent on age, a reduced flow rate, postvoid residual volume, and FBC. Prospective studies are needed to establish the causal relation between FBC and LUTS. Frequency volume charts are a valid, easy-to-use, noninvasive method to determine FBC as an aspect of urinary tract (dys)function in the evaluation of men with LUTS and to determine treatment options for LUTS.
    Urology 07/2001; 57(6):1093-8 discussion 1098-9. DOI:10.1016/S0090-4295(01)00988-8 · 2.13 Impact Factor
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    ABSTRACT: To determine the prevalence rates of erectile and ejaculatory dysfunction, associated bother, and their relation to sexual activity in a population-based sample of elderly men.Methods. Data were collected from 1688 men by way of self-administered questionnaires (including the International Continence Society male sex questionnaire) and measurements at a health center and urology outpatient department. The prevalence of significant erectile dysfunction (ie, erections of severely reduced rigidity or no erections) increased from 3% in men 50 to 54 years old to 26% in men 70 to 78 years old. In the same age strata, the prevalence of significant ejaculatory dysfunction (ie, ejaculations with significantly reduced volume or no ejaculations) increased from 3% to 35%. Pain or discomfort during ejaculation was rare (1%) and independent of age. In general, men were more concerned about erectile dysfunction than about ejaculatory dysfunction. However, most men had no or only little concern about their dysfunction. The percentage of men who reported being sexually active declined with increasing age and was lower in men with erectile and ejaculatory dysfunction and in men without a partner. In sexually active men, 17% to 28% had no normal erections, indicating that with advancing age normal erections are not an absolute prerequisite for a sexually active life. Erectile and ejaculatory dysfunction are common in elderly men. The results of this study indicate that these conditions are much less of a problem for older men than previously suggested.
    Urology 05/2001; 57(4):763-8. DOI:10.1016/S0090-4295(00)01091-8 · 2.13 Impact Factor
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    ABSTRACT: We determined the normal value of diurnal and nocturnal voiding frequency, and its determinants in a population based sample of elderly men. We collected data on 1,688 men 50 to 78 years old recruited from the population of Krimpen, The Netherlands. Measurements consisted of self-administered questionnaires, including the International Prostate Symptom Score (I-PSS), a 3-day frequency-volume chart, transrectal prostatic ultrasound, uroflowmetry and post-void residual urine volume measurement. Diurnal voiding frequency is independent of age and more frequent in men with benign prostatic hyperplasia (BPH). Nocturia 2 or more times is present in 30% of men 50 to 54 and in 60% of those 70 to 78 years old, while nocturia 3 or more times is present in 4% and 20%, respectively. In addition, nocturia is strongly associated with BPH and nocturnal polyuria but apparently not with cardiovascular symptoms, hypertension or diabetes mellitus. We noted poor agreement of the responses on the frequency-volume charts and the I-PSS question on nocturia. Using the I-PSS leads to a higher prevalence of nocturia. Diurnal frequency is independent of age (median 5 voids, interquartile range 4 to 6) but higher in men with BPH. Nocturia increases with advancing age and is more frequent in men with nocturnal polyuria. BPH is an independent risk factor for nocturia and increased diurnal voiding frequency. In those with nocturia there is a great difference in subjective symptoms and objective data, indicating that the weight of the I-PSS question on nocturia for making treatment decisions should be reconsidered.
    The Journal of Urology 11/2000; 164(4):1201-5. DOI:10.1016/S0022-5347(05)67141-8 · 3.75 Impact Factor
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    ABSTRACT: To estimate the prevalence of benign prostatic hyperplasia (BPH) in the community, and study the influence of BPH definition, age and response bias on prevalence rates. Subjects and methods A community-based longitudinal study of 3924 men aged 50-75 years was conducted in a Dutch municipality (Krimpen) near Rotterdam. Data from those responding were collected using self-administered questionnaires, and during visits to the health centre and outpatient clinic of the urology department. The questionnaires included symptom scores on general well being (Inventory of Subjective Health, ISH) and lower urinary tract symptoms (International Prostate Symptom Score, IPSS). A short version of the questionnaire (including the IPSS and ISH) was sent to a random sample of those not responding. All subjects participating fully underwent a physical examination, uroflowmetry, transrectal ultrasonometry of the prostate and had their prostate specific antigen level measured. Age-specific prevalence rates of BPH were estimated using different definitions, based on one or more of symptom severity, prostate volume and maximum flow rate. The influence of response bias was estimated using the questionnaires. The response rate was 50% (full participants). Of those not responding, 55% completed a short version of the questionnaire (partial participants). Compared with full participants, partial participants had a lower IPSS and slightly lower ISH. The prevalence rates of clinical BPH in the study population was 9-20% (95% confidence interval, 8-11% to 22-27%) depending on the definition used. After adjusting for nonresponse bias, the age-group specific prevalences for 5-year age strata were 1.1-1.8 times lower for all BPH definitions used. The prevalence rates of clinical BPH depend largely on the definition used and increase strongly with age. The effect of age is stronger when more variables are included in the definition. Adjustment for response bias results in substantially lower prevalence rates.
    BJU International 05/2000; 85(6):665-71. DOI:10.1046/j.1464-410x.2000.00570.x · 3.13 Impact Factor
  • Ruud Bosch, Frans Groeneveld, Arthur Bohnen, Wim Hop

Publication Stats

671 Citations
110.34 Total Impact Points

Institutions

  • 2005–2010
    • Erasmus MC
      • Department of General Practice
      Rotterdam, South Holland, Netherlands
  • 2007–2008
    • University Medical Center Utrecht
      • Urology
      Utrecht, Utrecht, Netherlands
  • 1993–2006
    • Erasmus Universiteit Rotterdam
      • • Department of General Practice
      • • Department of Urology
      Rotterdam, South Holland, Netherlands
    • Hospital Elkerliek
      Helmond, North Brabant, Netherlands