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Osteoporosis International, ISSN 0937-941X, 5/2014, Volume 25, Issue 5, pp. 1519 - 1526
Journal Article
Fundamental & Clinical Pharmacology, ISSN 0767-3981, 05/1997, Volume 11, Issue 3, pp. 281 - 284
Journal Article
Twin Research, ISSN 1369-0523, 08/2003, Volume 6, Issue 4, pp. 275 - 278
Questionnaire-based zygosity assessment in twins has generally been found to be valid. In this report we evaluate sex- and age-differences in the validity of... 
MAILED QUESTIONNAIRE | DIAGNOSIS | REPRODUCTIVE BIOLOGY | Reproducibility of Results | Age Factors | Humans | Twins, Dizygotic | Sex Factors | Female | Male | Registries | Chi-Square Distribution | Twins, Monozygotic | Surveys and Questionnaires - standards | Cohort Studies
Journal Article
by Pope, D and Croft, P
JOURNAL OF PUBLIC HEALTH MEDICINE, ISSN 0957-4832, 03/1996, Volume 18, Issue 1, pp. 6 - 12
Background General practice population registers are important sampling frames for surveys of disease prevalence, lifestyles and health needs. In any survey... 
POPULATION | MAILED QUESTIONNAIRES | PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH | ELECTORAL REGISTERS | bias | surveys | primary care | non-response | Mental Disorders - epidemiology | Age Factors | Pain - epidemiology | Bias | Humans | Middle Aged | Male | Health Surveys | Family Practice | England - epidemiology | Adolescent | Sex Factors | Adult | Female | Registries | Surveys and Questionnaires | Aged | Primary Health Care
Journal Article
Journal Article
European Journal of Epidemiology, ISSN 0393-2990, 1/2004, Volume 19, Issue 7, pp. 623 - 630
Non-response to mailed surveys reduces the effective sample size and may introduce bias. Non-response has been studied by (1) comparison to available data in... 
Correlations | Questionnaires | Mental health | Response bias | Lifestyle | Alcohol drinking | Smoke | Twins |