Fig. 2

Sex- and denture status-stratified association of salivary flow rate (normal versus low) with cognitive impairment (n = 649). a Sex stratified: Male (Odds ratio [OR] = 1.29, Confident interval [CI]: 0.67–2.5, P = 0.45); Female (OR = 1.63, CI: 1.07–2.50, p = 0.02); b Dental status stratified: Dentate (OR = 1.82, CI: 1.14–2.90, p = 0.01); Denture (OR = 1.20, CI: 0.70–2.07, p = 0.51). OR were adjusted for denture status, age, sex, education level, smoking, drinking, diabetes, hypertension, and obesity, except for stratified variable in the multivariable logistic regression model. The diamond indicates the OR and a bar indicates 95% CI. The horizontal dotted line is the references as the null of association indicating the OR = 1