Fig. 3
Propensity score matched (PSM) association of laxatives use with incidence of dementia according to baseline factors. Note: propensity-score match models were adjusted for sex, age, ethnicity, socioeconomic status, education attainment, current employment status, smoking status, alcohol consumption, physical activity, diet, BMI, heart disease, stroke, diabetes, hypertension, depression, cholesterol levels, constipation, and genetic risk. CI, confidence interval; HR, hazard ratio. *The P value used for heterogeneity corresponded to the Χ2 test statistic for the likelihood ratio test comparing models with and without interaction between laxatives use and baseline factors