Publications (4)14.86 Total impact
Article: Point prevalence of schizophrenia in immigrant groups in Rotterdam: data from outpatient facilities.[show abstract] [hide abstract]
ABSTRACT: Reports of an increased incidence of schizophrenia in some immigrant groups to The Netherlands are based exclusively on hospital data. The aims of our study were: 1) to determine the treated point prevalence of schizophrenia at outpatient mental health services in Rotterdam and to compare the results for immigrants to those for natives; and 2) to compare groups born in The Netherlands and immigrant groups in terms of the proportions of patients with a previous hospital admission. We included all patients aged between 20 and 64 who were treated for a non-affective psychosis at any of the outpatient mental health services in Rotterdam on October 1, 1994. The mental health professionals responsible reported on the socio-demographic and clinical characteristics of each patient. Seven hundred and thirteen patients with a diagnosis of schizophrenia (DSM-III-R) were identified (rate: 2.1 per 1000). The (treated) prevalence of schizophrenia in male immigrants from Surinam and Morocco and in female immigrants from Surinam, the Netherlands Antilles and Cape Verde was significantly higher than that in their native-born counterparts (odds ratios between 2 and 3). The (treated) prevalence was not significantly higher in immigrants from Turkey, female immigrants from Morocco or male immigrants from the Antilles. Proportions of patients with a previous hospital admission were similar in each ethnic group (81-93%). These findings are generally in line with earlier studies, based on the Dutch psychiatric registry, which has reported an increase in the (treated) incidence of schizophrenia in immigrants from Surinam and the Netherlands Antilles and in male immigrants from Morocco, and no increase in the (treated) incidence in immigrants from Turkey or female immigrants from Morocco.European Psychiatry 05/2001; 16(3):162-6. · 2.77 Impact Factor
Article: Validity of peak expiratory flow measurement in assessing reversibility of airflow obstruction.[show abstract] [hide abstract]
ABSTRACT: Assessing the reversibility of airflow obstruction by peak expiratory (PEF) measurements would be practicable in general practice, but its usefulness has not been investigated. PEF measurements were performed (miniWright peak flow meter) in 73 general practice patients (aged 40 to 84) with a history of asthma or chronic obstructive lung disease before and after 400 micrograms inhaled sulbutamol. The change in PEF was compared with the change in forced expiratory volume in one second (FEV1). Reversible airflow obstruction was analysed in two ways according to previous criteria. When defined as a 9% or greater increase in FEV1 expressed as a percentage of predicted values reversibility was observed in 42% of patients. Relative operating characteristic analysis showed that an absolute improvement in PEF of 60 l/min or more gave optimal discrimination between patients with reversible and irreversible airflow obstruction (the sensitivity and specificity of an increase of 60 l/min in detecting a 9% or more increase in FEV1 as a percentage of predicted values were 68% and 93% respectively, with a positive predictive value of 87%). When defined as an increase of 190 ml or more in FEV1, reversible airflow obstruction was observed in 53% of patients. Again an absolute improvement in PEF of 60 l/min or more gave optimal discrimination between patients with reversible and irreversible airflow obstruction (sensitivity 56%, specificity 94%, and positive predictive value 92%). Absolute changes in PEF can be used as a simple technique to diagnose reversible airflow obstruction in patients from general practice.Thorax 04/1992; 47(3):162-6. · 6.84 Impact Factor
Article: Quality of life in elderly patients with chronic nonspecific lung disease seen in family practice.[show abstract] [hide abstract]
ABSTRACT: We studied the quality of life of elderly patients with chronic nonspecific lung disease (CNSLD) in family practice. We also investigated the relationship between patients' somatic condition and their quality of life. Seventy patients, aged 40 years or older, with a diagnosis or symptoms of CNSLD completed the Sickness Impact Profile (SIP) and the list of daily activities (DAL). Pulmonary function (FEV1, IVC) and respiratory symptoms were assessed. The results indicated that patients were more impaired in their physical and psychosocial functioning than healthy control subjects. Most lung function parameters showed no correlation with the SIP scores. The respiratory symptoms of wheezing and dyspnea were related to patients' quality of life. Patients with chronic obstructive pulmonary disease (COPD) were more restricted in their daily functioning than patients with asthma. Since the relationship between patients' somatic condition and their quality of life is weak, we recommend comprehensive care that encompasses psychosocial as well as somatic interventions.Chest 11/1990; 98(4):894-9. · 5.25 Impact Factor
Article: Point prevalence of schizophrenia in immigrant groups in Rotterdam: data from outpatient facilities.