1. 1989 cohabiting partner was coded according to the Registrar General's classification.' Net disposable income each week was assessed twice. The current mood of the mother was measured on three occasions with the 28 item general health questionnaire.6 This allowed us to assess anxiety and depression without including somatic symptoms and social dysfunction, which could be an effect of pregnancy rather than of mental illness. Previous psychiatric treatment was recorded. To measure stress an inventory of life events modified from Paykel's interview for recent life events was taken. Satisfaction and happiness with accommodation, neighbours, and neighbourhood were recorded on a four point scale. The same method was used to measure perceived difficulties in overall finances and in affording accommodation, food, heating, and clothing;M.A.R.C.H.
2. Social aspects of low birthweight;Dunn, H.G.;Can Med Assoc,1984
3. States Surgeon General. The health consequences of'smokingfor women: report;States Department of Health and Human Services, Public Health Service, Office of the,1980
4. McCance and Widdowson's the composition offoods;Paul, A.A.; Southgate, D.A.T.,1978
5. Population Censuses and Surveys. Classification of occupations;Office of,1980