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

Table 1

Age-specific prevalence and age-adjusted prevalence of overweight and obesity in Thai population aged ≥20 years, in 2009.

	% (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)
	Urban (𝑁 = 1,997)	Rural (𝑁 = 1,492)	Urban (𝑁 = 3,114)	Rural (𝑁 = 2,068)	Urban (𝑁 = 1,108)	Rural (𝑁=589)
All
Age ≥ 20 years	18.2 (16.9, 19.5)	17.2 (16.1, 18.3)	28.5 (27.1, 30.0)	24.8 (22.4, 27.3)	12.2 (10.2, 14.1)	7.6 (6.2, 9.1)
Men
All ≥20 years	19.0 (17.6, 20.5)	17.7 (15.9, 19.5)	28.2 (26.0, 30.4)	20.5 (17.3, 23.8)	9.8 (7.6, 11.9)	4.9 (3.1, 6.8)
20–34	14.8 (12.3, 17.2)	15.9 (11.9, 20.0)	21.5 (18.1, 24.8)	18.0 (13.4, 22.6)	14.4 (10.1, 18.8)	6.3 (2.7, 9.9)
35–59	21.4 (19.2, 23.6)	19.4 (17.5, 21.3)	34.4 (30.8, 38.1)	24.1 (19.7, 28.5)	7.7 (5.9, 9.5)	5.0 (3.1, 7.0)
≥60	19.4 (15.9, 22.9)	15.8 (14.2, 17.4)	26.4 (23.5, 29.3)	15.2 (12.7, 17.7)	6.0 (3.7, 8.3)	2.0 (1.4, 2.7)
Education level
Less than primary	24.5 (13.6, 35.4)	20.5 (1.8, 39.3)	27.7 (16.0, 39.4)	3.0 (0, 6.8)	15.9 (5.9, 26.1)	5.1 (1.0, 13.9)
Primary	19.5 (15.7, 23.3)	18.6 (17.0, 20.2)	23.0 (18.9, 27.2)	18.3 (14.4, 22.2)	9.2 (4.6, 13.8)	3.8 (1.8, 5.8)
Secondary	19.5 (17.6, 21.5)	17.7 (12.1, 23.4)	29.0 (27.1, 30.8)	24.9 (21.3, 28.4)	10.3 (8.2, 12.9)	7.1 (4.2, 10.0)
University	19.4 (13.0, 25.7)	26.5 (18.1, 34.8)	34.8 (29.4, 40.1)	29.2 (18.5, 40.0)	9.9 (5.7, 14.0)	6.6 (3.4, 9.9)
Women
All ≥20 years	17.5 (15.8, 19.2)	16.7 (15.5, 17.8)	28.9 (26.6, 31.1)	28.9 (25.8, 32.1)	14.3 (12.2, 16.4)	10.2 (8.7, 11.8)
20–34	14.8 (12.0, 17.5)	14.1 (11.7, 16.6)	20.8 (17.4, 24.3)	21.3 (16.6, 26.0)	12.9 (9.4, 16.4)	9.7 (7.1, 12.3)
35–59	18.9 (16.8, 21.0)	18.3 (16.2, 20.4)	31.8 (28.8, 34.9)	35.9 (31.2, 40.7)	15.8 (13.5, 18.0)	11.8 (9.4, 14.2)
≥60	16.6 (14.7, 18.5)	16.5 (15.1, 18.0)	33.0 (30.0, 36.0)	24.5 (21.0, 27.9)	12.4 (9.2, 15.5)	6.3 (4.2, 8.5)
Education level
Less than primary	18.9 (4.5, 33.3)	17.8 (6.0, 29.6)	22.1 (14.2, 30.0)	28.8 (12.9, 44.7)	9.2 (2.9, 15.4)	5.4 (1.5, 9.4)
Primary	17.4 (15.1, 19.8)	17.0 (14.3, 19.8)	33.4 (27.6, 39.2)	32.7 (27.4, 37.9)	16.8 (11.8, 21.7)	9.5 (7.6, 11.3)
Secondary	17.8 (12.8, 22.8)	21.5 (15.2, 27.8)	27.8 (25.7, 29.9)	26.6 (20.7, 32.6)	13.3 (11.6, 15.1)	14.5 (9.2, 19.9)
University	17.6 (11.5, 23.7)	17.1 (10.7, 23.4)	25.9 (21.1, 30.7)	21.3 (13.4, 29.3)	9.2 (6.6, 11.8)	8.9 (3.4, 14.5)