| http://www.w3.org/ns/prov#value | - Generalised mixture models were used to compare changes in SF-36 Mental Health Index scores for women in these different groups over time (and in relation to the introduction of mental health items), after adjusting for sociodemographic factors, including education, smoking, marital status, urban or non-urban area of residence, difficulty managing on income and BMI. Linked data allowed analysis of
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