title: Longitudinal records of anxiety and depression in general practice: the Second National Morbidity Survey.
abstract: This paper analyses patterns of episodes of anxiety and depression as recorded by 22 general practices which took part in the Second National Morbidity Survey (RCGP, 1980). The data comprise 6 years' records. Simple Markov chains are fitted to each age-group of men and women, and the inter-practice variation in the resulting parameter estimates are compared, using Andrews' plots and principal components plots. The implications for the presentation and interpretation of data from large-scale morbidity surveys are discussed.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001008:Anxiety Disorders / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D003866:Depressive Disorder / Q000453:epidemiology*; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D006113:United Kingdom