After being stratified by gender, the association was significant for parental divorce (OR 3.76, 95% CI 2.34 to 6.03) in the prevalence analysis and for being raised in a relative's house (OR 1.89, 95% CI 1.21 to 2.94) in the incidence analysis only among women.
Repeating the 7-year prevalence analysis in CiPCA for just those fully registered between 2004 and 2010 increased consultation prevalence from 651 to 758/10 000 but only increased prevalence of RA by 10% and less for the other conditions.
The study group for prevalence analysis included 1,021 subjects (210 men and 811 women).
The RR itself and its lower and upper 95% confidence limits (LCL and UCL) are always recorded, with the odds ratio chosen if available for a prevalence analysis and the relative risk (or hazard ratio if provided) for an incidence analysis.
For the prevalence analysis, participants who had a stroke at baseline (963, 7.4%) or for whom baseline information about stroke was missing (138, 1.1%) were excluded, leaving 11 903 participants.
Population data for the practice, aggregated along the same age bands, was also uploaded for AF prevalence analysis.
Transfers from GP or non-governmental programmes (n = 8) were included for TB prevalence analysis but removed before incidence and survival analysis because of unknown previous ART regimens.
We then restricted the disease prevalence analysis and models which accounted for clustering by postcode to movement below an arbitrarily chosen 5 km residential mobility threshold (see online supplementary table S1).
Overall and monthly household income-specific prevalence were adjusted for age, sex, smoking status, occupational position, marital status, dependent children at home (age <15 years), education, Swiss citizenship, complementary health insurance, receiving health insurance premium subsidy, and monthly household income (only for overall prevalence analysis).
For the symptom prevalence analysis, the annual mean NO2 concentration in the year immediately prior to the survey year was assigned as the exposure.
