Prevalence and Trends of Obesity and Association with Socioeconomic Status in Thai Adults: National Health Examination Surveys, 1991–2009

Table 3

Annual adjusted odds ratio (95% CI) for overweight, obesity class I and class II associated with educational levels in Thai adults aged 20–59 years, Thai NHES 1991–2009.

	OR (95% CI)
	Overweight (BMI 23–<25 kg/m^2)		Obesity class I (BMI 25–<30 kg/m^2)		Obesity class II (BMI ≥ 30 kg/m^2)
	OR	𝑃 value	OR	𝑃 value	OR	𝑃 value
Men
All	1.01 (0.99, 1.02)	0.07	1.04 (1.02, 1.05)	0.001	1.05 (1.01, 1.08)	<0.01
Area of residence
Urban	1.0 (0.98, 1.01)	0.76	1.03 (1.02, 1.04)	<0.001	1.05 (1.01, 1.09)	0.02
Rural	1.01 (1.0, 1.03)	0.02	1.04 (1.01, 1.06)	0.001	1.05 (1.0, 1.1)	0.03
Education level
Less than primary	1.01 (0.93, 1.10)	0.77	0.93 (0.88, 0.99)	0.02	1.12 (1.01, 1.25)	0.03
Primary	1.01 (1.0, 1.03)	0.01	1.04 (1.02, 1.06)	<0.001	1.03 (0.99, 1.08)	0.12
Secondary	1.0 (0.97, 1.03)	0.98	1.04 (1.01, 1.06)	0.002	1.06 (1.01, 1.12)	0.02
University	1.02 (0.97, 1.07)	0.37	1.04 (0.99, 1.08)	0.08	1.04 (0.96, 1.23)	0.33
Women
All	1.0 (0.99, 1.01)	0.55	1.03 (1.01, 1.04)	<0.001	1.04 (1.02, 1.06)	<0.001
Area of residence
Urban	1.01 (0.99, 1.01)	0.17	1.01 (1.0, 1.04)	0.14	1.04 (1.02, 1.06)	0.001
Rural	1.0 (0.98, 1.00)	0.16	1.03 (1.01, 1.05)	0.001	1.04 (1.02, 1.06)	0.001
Education level
Less than primary	1.0 (0.95, 1.05)	0.55	1.03 (0.98, 1.07)	0.20	1.0 (0.94, 1.07)	0.95
Primary	0.99 (0.98, 1.01)	0.93	1.03 (1.01, 1.05)	<0.001	1.04 (1.02, 1.06)	<0.001
Secondary	1.01 (0.99, 1.04)	0.29	1.01 (0.99, 1.04)	0.25	1.05 (1.01, 1.10)	0.01
University	1.01 (0.98, 1.05)	0.36	1.02 (0.98, 1.06)	0.35	1.04 (0.98, 1.10)	0.18