Table 3. Prevalence ratio of multimorbidity in older adults, according to independent variables in an unadjusted univariate model. São Paulo, Brazil, 2015.

Variables	Univariate analysis
	PR	95%CI	p
Gender (ref. male)
Female	1.85	1.52–2.25	< 0.001
Age (ref. 60–64 years old)
65–69 years old	1.18	0.94–1.46	0.147
70–74 years old	1.22	0.93–1.59	0.137
≥ 75 years old	1.30	1.01–1.68	0.035
Race/Skin color (ref. White)
Asian	0.98	0.63–1.53	0.938
Mixed-race	1.07	0.87–1.32	0.519
Black	1.20	0.97–1.48	0.078
Smoking habit (ref. never smoked)
Currently smokes	0.62	0.45–0.84	0.002
Former smoker	1.07	0.89–1.29	0.457
Consumer price index (ref. low income)
High income	1.14	0.96–1.35	0.139

PR: prevalence ratio; 95%CI: 95% confidence interval.