Logistic regression of hypertension prevalence change per period as well as absolute changes (AC) and aetiologic fractions (AF) of hypertension during the study period by sex, age, educational status and obesity (adjusted for age).

acorrection variable for regression: age interval of 5 years.bstudy period = 1983 to 2006/07.OR = Odds ratio. AC% = absolute change in hypertension prevalence during the study period as computed by logistic regression. AF% = aetiologic fractions of hypertension during the study period as computed by logistic regression.