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The availability of adequate treatment for erectile dysfunction (ED) triggers studies into the prevalence of ED in the general population. Yet, previous studies showed different prevalence estimates partly due to differences in patient selection, in (unclear) definitions of ED and in assessment. ENIGMA has been designed to study the prevalence of ED in the general population of The Netherlands, using the WHO definition with a description of the way of assessment. In all, 5721 mail surveys were sent to all men, aged 18 y and older in 12 general practices in The Netherlands. A total of 5601 were included in the study and 2117 (38%) were completed. A total of 38% of the men reported to have ever had some kind of erectile problem. The prevalence of ED was 17% (6% mild, 4% moderate and 7% complete). Age, diabetes, cardiovascular diseases, penile disorders, irradiation in the pelvic region, relational problems, fear for failure, surmenage, medication use and regular consumption of alcohol were independently related to ED. Men with ED were less content with their (sexual) life and had less confidence in sexual performance. Presence of ED was negatively related to affected happiness in life. ED is commonly found in men and is related to age, medication, comorbidity and lifestyle factors. Men with ED perceive a lower quality of (sex)life. Doctors should be aware of the presence of ED and its consequences in patients.

Although simulated patients are increasingly used in medical education, little research has been carried out on their validity. Validity in this case defines the relationship between performance with a simulated patient and performance with a real patient. One of the objectives of this study was to determine the validity of the use of simulated patients in assessing the consultation skills of trainees in vocational training at the Department of General Practice, University of Utrecht, The Netherlands. A check-list with a rating scale was used to assess the consultation skills of trainees at the department with simulated patients as well as in their training practices with real patients. The simulated and the selected practice cases were patients with complex multi-conditional problems like low back pain, headache and chest pain. The consultation skills were subdivided into four groups: the patient-centered approach, the non-somatic approach, communication skills and interpersonal skills. The measurement of skills, in particular of consultation skills, is very difficult. A description is given of the way the research group solved this problem. The analysis was performed by determining the sensitivity and predictive value of the assessment of a simulated encounter with a routine practice encounter. A difference existed in the assessed level of consultation skills in the simulated encounter compared to the level in the training practice. In simulation the level of consultation skills was higher than in day-to-day practice. This difference can reflect the difference between competence and performance. Competence is defined as what a doctor is capable of doing and performance as what a doctor actually does in day-to-day practice.(ABSTRACT TRUNCATED AT 250 WORDS)

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