Susan D. Keller's research while affiliated with Research Triangle Park Laboratories, Inc. and other places

Publications (19)

Article
Quantitative methods for describing the social effects of occupational injury and illness are evaluated including surveys of prevalence and ratings of severity of social role disability. The reliability and validity for the injured worker population of the most commonly used general and condition-specific role disability measures is reviewed and su...
Article
The SF-36 Arthritis-Specific Health Index (ASHI) was constructed to improve the responsiveness of the SF-36 Health Survey to changes in the severity of arthritis through the use of arthritis-specific scoring algorithms. This study compared the responsiveness of the ASHI and other generic scales and summary measures scored from the SF-36 in clinical...
Article
As shown here, general health measures cover much of the content included in arthritis-specific measures, but, are they equally sensitive to changes in disease condition? We reviewed the literature on the most widely used general health measure, the SF-36 Health Survey, to see if the empirical evidence supported its validity for use in arthritis pa...
Article
To evaluate the psychometric assumptions underlying the construction and scoring of SF-36 scales and summary measures among clinical trial participants with arthritis. Cross-sectional SF-36 data from the baseline assessment of adult patients (n = 1,016) participating in four placebo-controlled clinical trials of treatment for arthritis were analyze...
Article
To evaluate the validity of SF-36 Health Survey (SF-36) scale scores and summary measure scores to describe the health burden of arthritis and to be responsive to clinical indicators of arthritis severity used in four clinical trials. Adults participating in four double-blinded, placebo-controlled clinical trials of therapy for osteoarthritis or rh...
Article
Objective. To evaluate the psychometric assumptions underlying the construction and scoring of SF-36 scales and summary measures among clinical trial participants with arthritis. Methods. Cross-sectional SF-36 data from the baseline assessment of adult patients (n = 1,016) participating in four placebo-controlled clinical trials of treatment for ar...
Article
An arthritis-specific health index (ASHI) for the SF-36 Health Survey was developed by studying its responsiveness to changes in clinical indicators of arthritis severity. Longitudinal data from 1,076 patients participating in four placebo-controlled trials were analyzed. All had at least a 6-month history of moderate to severe osteoarthritis or rh...
Article
Objective. The SF-36 Arthritis-Specific Health Index (ASHI) was constructed to improve the responsiveness of the SF-36 Health Survey to changes in the severity of arthritis through the use of arthritis-specific scoring algorithms. This study compared the responsiveness of the ASHI and other generic scales and summary measures scored from the SF-36...
Article
Objective. To evaluate the validity of SF-36 Health Survey (SF-36) scale scores and summary measure scores to describe the health burden of arthritis and to be responsive to clinical indicators of arthritis severity used in four clinical trials. Methods. Adults participating in four double-blinded, placebo-controlled clinical trials of therapy for...
Article
A crucial prerequisite to the use of the SF-36 Health Survey in multinational studies is the reproduction of the conceptual model underlying its scoring and interpretation. Structural equation modeling (SEM) was used to test these aspects of the construct validity of the SF-36 in ten IQOLA countries: Denmark, France, Germany, Italy, the Netherlands...
Article
The similarity in meaning assigned to response choice labels from the SF-36 Health Survey (SF-36) was evaluated across countries. Convenience samples of judges (range, 10 to 117; median = 48) from 13 countries rated translations of response choice labels, using a variation of the Thurstone method of equal appearing intervals. Judges marked a point...
Article
The similarity in meaning assigned to response choice labels from the SF-36 Health Survey (SF-36) was evaluated across countries. Convenience samples of judges (range, 10 to 117; median = 48) from 13 countries rated translations of response choice labels, using a variation of the Thurstone method of equal appearing intervals. Judges marked a point...
Article
A crucial prerequisite to the use of the SF-36 Health Survey in multinational studies is the reproduction of the conceptual model underlying its scoring and interpretation. Structural equation modeling (SEM) was used to test these aspects of the construct validity of the SF-36 in ten IQOLA countries: Denmark, France, Germany, Italy, the Netherlands...
Article
To compare the measurement properties of acute (one-week recall) and standard (four-week recall) versions of SF-36 Health Survey (SF-36) scale scores. SF-36 data collected from 142 participants (60% female, average age 39) in a clinical trial of an asthma medication: 74 patients randomized to the acute form and 68 to the standard. The SF-36 was sel...
Article
To assess and compare the quality of life of men with advanced prostate cancer who are in remission receiving treatment with a luteinizing hormone-releasing hormone (LHRH) agonist and flutamide or who are in progression. We conducted a cross-sectional survey to measure health-related quality of life in a cohort of 113 patients with metastatic prost...
Article
Full-text available
Regression methods were used to select and score 12 items from the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) to reproduce the Physical Component Summary and Mental Component Summary scales in the general US population (n=2,333). The resulting 12-item short-form (SF-12) achieved multiple R squares of 0.911 and 0.918 in predicti...
Article
Full-text available
Regression methods were used to select and score 12 items from the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) to reproduce the Physical Component Summary and Mental Component Summary scales in the general US population (n = 2,333). The resulting 12-item short-form (SF-12) achieved multiple R squares of 0.911 and 0.918 in predic...
Article
There is growing demand for translations of health status questionnaires for use in multinational drug therapy studies and for population comparisons of health statistics. The International Quality of Life Assessment (IQOLA) Project is conducting a three-stage research program to determine the feasibility of translating the SF-36 Health Survey, wid...
Article
There is growing demand for translations of health status questionnaires for use in multinational drug therapy studies and for population comparisons of health statistics. The International Quality of Life Assessment (IQOLA) Project is conducting a three-stage research program to determine the feasibility of translating the SF-36 Health Survey, wid...

Citations

... As potential mediators of the effect of PP content on physical activity, we assessed internal locus of control via the Multidimensional Health Locus of Control (MHLC) scale, (Wallston, 2005) perceived social support via the Multidimensional Scale of Perceived Social Support (MSPSS; Zimet, Powell, Farley, Werkman, & Berkoff, 1990) and physical activity self-efficacy via the Self-Efficacy for Exercise (SEE) measure (van der Heijden, Pouwer, & Pop, 2013). We assessed physical function using the PROMIS 20-item physical function (PF-20) scale, (Jensen et al., 2015) and we measured health-related quality of life (HRQoL) via the Medical Outcomes Study Short Form-12 (SF-12) scale (Ware, Kosinski, & Keller, 1996). Finally, we also assessed self-reported health behaviors, including physical activity via the International Physical Activity Questionnaire (IPAQ) (Lee et al., 2011) and overall adherence to healthy diet, physical activity, and medications using items from the Medical Outcomes Study Specific Adherence Scale (MOS SAS) (DiMatteo, Hays, & Sherbourne, 1992). ...
... Physical function was assessed using the physical component summary of the Japanese version of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) version 2.0. SF-36 is not a disease-specific measurement tool but a generic measurement tool to assess health status; however, it has been shown to be a reliable, valid, and useful assessment tool for patients with OA [12,13], who commonly have comorbidities [14]. ...
... Health-Related Quality of Life Survey (SF-12): The SF-12 Health Survey measures include two subscales that measure mental and physical functioning and overall healthrelated quality of life [30]. The SF-12 is a multipurpose short-form survey with 12 questions, all selected from the longer SF-36 Health Survey [44]. The SF-12 is a validated measure for assessing the health status of low-income minority populations [45]. ...
... Generic health status instruments, such as the Short Form 36 (SF-36), measure multiple aspects of health, including physical function, social function, and pain 4) . Extensive results have been published in support of the psychometric properties of the SF-36 5,6) . The SF-36 measures the following eight domains: physical functioning (PF), role-physical (RP), bodily pain (BP), general health (GH), vitality (VT), social functioning (SF), role emotional (RE), and mental health (MH) 4) . ...
... At the time, a sound is more prominent, the audience considering it, turning their eyes and heads towards the source and listening cautiously. The auditory system, and its operations, are integrated to perform hearing, listening, understanding, and communicating actions [3]. ...
... HRQoL was assessed using the 36-Item Short-Form Health Survey (SF-36), a widely used HRQoL assessment tool, which was validated in large population-based surveys as well as in clinical settings (Hart et al., 2015;Keller et al., 1998). The questionnaire provides a summary of physical component scores (PCS) and mental component scores (MCS), ...
... The PCS questionnaire was translated into Spanish but not crossculturally adapted to the Argentine population (García Campayo et al., 2008). Although Spain and Argentina speak the same language, linguistic differences among Spanish-speaking countries may affect the interpretation of the questionnaire items (Ware et al., 1995). Differences in terminology could affect the interpretation and, therefore, the responses (Beaton et al., 1976). ...
... Patients filled in the PRO-CTCAE items at baseline and at day 7 and the daily symptom log from days 1 to 6. The remaining NCCTG PRO-CIPN questionnaire items were translated and adapted into Danish for the CINCAN trials using the method described by the World Health Organization-Quality of Life Group (WHOQOL) [27] (Translation Report available on request). ...
... Other limited efficacy outcome measures will include: (i) the MOXFQ [43] walking subscale, measured at baseline and at four-weekly intervals until 12 weeks; (ii) the MOXFQ [43] social subscale, measured at baseline and at four-weekly intervals until 12 weeks; (iii) foot and ankle muscle strength, measured with a hand-held dynamometer using our previously documented, reliable protocol at baseline and week 12 [46]; (iv) general health-related quality of life, assessed using Short Form(SF)-12 [47] measured every four weeks; (v) number of participants using co-interventions, documented every four weeks; (vi) participants' perception of overall treatment effect, assessed with the question "Overall, how has your foot pain changed since the start of the study?" and using a global impression of change 15-point Likert scale response (ranging from 'a very great deal worse' to 'a very great deal better'), measured at 12 weeks [48]. ...
... The raw scale scores of the SF-36 are linearly transformed into a range between 0 and 100. Higher scores represent better levels of functioning (Albertsen et al., 1997). ...