Table 2.

Prevalence of obesity and odds ratio (OR) by age, education level, income status, race, and smoking status among men and women enrolled from the elderly health examination programme in Taipei, 2013–2015.

Characteristic	Men			Women
	Prevalence, %	OR (95% CI)a	p value	Prevalence, %	OR (95% CI)a	p value
Ageb		0.977 (0.972–0.981)c	< 0.001		0.999 (0.995–1.003)	0.644
Education level, years
≤ 6	19.2	1.436 (1.314–1.570)c	< 0.001	24.1	2.278 (2.062–2.517)c	< 0.001
7–9	18.5	1.363 (1.219–1.523)c	< 0.001	19.0	1.680 (1.500–1.881)c	< 0.001
10–12	17.1	1.213 (1.113–1.322)c	< 0.001	15.1	1.278 (1.146–1.424)c	< 0.001
13–15	14.2	0.972 (0.868–1.087)	0.614	13.0	1.087 (0.945–1.251)	0.241
≥ 16	14.7	1 [Reference]		12.1	1 [Reference]
From lower-income household
No	16.5	1 [Reference]		18.3	1 [Reference]
Yes	14.5	0.907 (0.746–1.102)	0.325	21.3	1.061 (0.868–1.297)	0.566
Race
Non-aborigine	16.1	1 [Reference]		18.0	1 [Reference]
Aborigine	43.7	2.936 (2.316–3.722)c	< 0.001	38.3	2.616 (2.184–3.133)c	< 0.001
Smoking
Non-smoker	16.3	1 [Reference]		18.3	1 [Reference]
Occasional smoker	19.4	1.079 (0.895–1.300)	0.426	20.0	0.830 (0.529–1.304)	0.419
Current smoker	16.6	0.861 (0.758–0.978)c	0.022	20.7	0.874 (0.622–1.229)	0.439

OR odds ratio, CI confidence interval.

^aOR and 95% CI were estimated with a multivariate logistic regression model that included all 5 characteristics presented in this table.

^bThe OR of age described odds ratio of being obese with each additional year.

^cStatistically significant results.