The purpose of this study was to estimate the prevalence of erectile dysfunction (ED) in Colombia, Ecuador, and Venezuela. A 49-item questionnaire was completed by 1946 men aged 40 years and older. The age-adjusted combined prevalence of minimal, moderate, and complete ED for all three countries was 53.4%, with 19.8% of all men reporting moderate to complete ED. Age was the variable most strongly linked to ED; the prevalence of complete ED increased markedly in men older than 79 y of age (31.9%) and 70 -79 y (17.2%) compared with men aged 40 -49 y (<3%). Several medical conditions, such as hypertension, benign prostatic hyperplasia, and diabetes, and the use of medications to treat these conditions were correlated with the prevalence of ED. This study corroborates earlier studies demonstrating that ED is very common, increases dramatically with age, and has multiple correlates, including some that are also risk factors for cardiovascular disease.

Study objective-The focus of physical activity promotion is moving from methods for increasing health enhancing physical activity on the individual level to higher level strategies including environmental and policy approaches. Scientific inquiry, traditionally related to individual-based strategies, requires adaptation and refinement when environmental and policy changes become more relevant. The objective of this study is to investigate the significance for behaviour and health of community-based environments that encourage physical activity. Design and setting-The article presents data and results from a cross sectional comparative survey of the general population in six European countries (Belgium, Finland, Germany (East and West), Netherlands, Spain, Switzerland). Specifically, the relation between perceived community-based opportunities for physical activity, self reported physical activity, and self rated health status is investigated. Towards a paradigm shift in physical activity research The benefits of physical activity for public health are widely accepted by both experts and lay people. There are few other issues where policymakers, scientists, and the population are so congruent in their belief that "it's good for your health". Specifically, physical activity can be related to health promotion, disease prevention, and rehabilitation. It has a positive impact on traditional public health indicators such as mortality and morbidity as well as on psychosocial well being and quality of life. Participants-Representative

Results are discussed in terms of rationality and effectiveness of health policy. They indicate that six sensitising constructs derived from the theoretical framework represent equivalent structures across nations. They comprise a validated instrument that can be used for further comparative health policy research.

This paper addresses the role of policy and evidence in health promotion. The concept of von Wright's "logic of events" is introduced and applied to health policy impact analysis. According to von Wright (1976), human action can be explained by a restricted number of determinants: wants, abilities, duties, and opportunities. The dynamics of action result from changes in opportunities (logic of events). Applied to the policymaking process, the present model explains personal wants as subordinated to political goals. Abilities of individual policy makers are part of organisational resources. Also, personal duties are subordinated to institutional obligations. Opportunities are mainly related to political context and public support. The present analysis suggests that policy determinants such as concrete goals, sufficient resources and public support may be crucial for achieving an intended behaviour change on the population level, while other policy determinants, e.g., personal commitment and organisational capacities, may especially relate to the policy implementation process. The paper concludes by indicating ways in which future research using this theoretical framework might contribute to health promotion practice for improved health outcomes across populations.

Associations of health policy perception with health behaviours are analysed. Policy perception is differentiated in information about programmes and appraisal of health policy's contribution to policy goals, and conceptualized on the level of: (1) individuals; and (2) populations (as a social climate indicator). Survey data from the Biomed2-Project MAREPS gathered in Belgium, Finland, Germany, The Netherlands, Spain and Switzerland (N= 3343) show that at the individual level, only policy information is associated with utilizing mammography, quitting smoking, physical activity and political participation in creating healthy environments. In contrast, multilevel regression analyses show that policy appraisal is related to physical activity and political participation as a social climate factor. Implications for integrating health psychology and public health within public health psychology are discussed.