Table 2. Association of obesity with newly diagnosed and previously known atopic cases in Chinese adults.

Cases		Obesity N (%)a	Crude	P	Adjustedb	P
			OR (95% CI)		OR (95% CI)
Newly diagnosed	Male	433 (8.78)	1.21 (0.77–1.91)	0.3983	1.25 (0.79–1.97)	0.3339
	Female	865 (4.62)	1.21 (0.80–1.81)	0.3666	1.29 (0.85–1.94)	0.2270
	18–39	775 (4.90)	1.32 (0.85–2.05)	0.2223	1.33 (0.85–2.07)	0.2192
	40–59	466 (7.51)	1.30 (0.84–2.02)	0.2460	1.26 (0.81–1.97)	0.3120
	≥60	57 (8.77)	1.21 (0.39–3.78)	0.7464	1.38 (0.42–4.50)	0.5930
	Atopic dermatitis	664 (6.02)	1.26 (0.87–1.84)	0.2194	1.33 (0.91–1.95)	0.1356
	Atopic rhinitis	287 (5.92)	1.24 (0.73–2.10)	0.4208	1.27 (0.74–2.18)	0.3907
	Atopic asthma	108 (5.56)	1.16 (0.50–2.70)	0.7309	1.08 (0.46–2.54)	0.8587
	Multimorbidity of three atopic diseases	239 (6.28)	1.32 (0.76–2.31)	0.3279	1.24 (0.71–2.18)	0.4524
	Total	1,298 (6.01)	1.26 (0.93–1.70)	0.1303	1.27 (0.94–1.72)	0.1238
Previously known	Male	390 (14.87)	2.21 (1.46–3.33)	0.0002	2.06 (1.32–3.21)	0.0016
	Female	724 (9.53)	2.62 (1.84–3.74)	<0.0001	2.64 (1.80–3.86)	<0.0001
	18–39	690 (10.58)	3.02 (2.06–4.43)	<0.0001	2.70 (1.79–4.09)	<0.0001
	40–59	374 (10.96)	1.97 (1.29–3.02)	0.0018	1.89 (1.19–3.02)	0.0073
	≥ 60	50 (26)	4.41 (1.75–11.15)	0.0017	5.03 (1.94–12.99)	0.0009
	Atopic dermatitis	504 (10.91)	2.42 (1.72–3.40)	<0.0001	2.29 (1.59–3.29)	<0.0001
	Atopic rhinitis	416 (10.34)	2.27 (1.57–3.29)	<0.0001	2.37 (1.59–3.54)	<0.0001
	Atopic asthma	100 (10.00)	2.19 (1.11–4.33)	0.0240	2.32 (1.13–4.78)	0.0224
	Multimorbidity of three atopic diseases	94 (20.21)	5.00 (2.91–8.57)	<0.0001	5.24 (2.98–9.24)	<0.0001
	Total	1,114 (11.40)	2.54 (1.94–3.32)	<0.0001	2.41 (1.81–3.22)	<0.0001

^aN, number of cases; percentage, prevalence of obesity among atopic cases.

^bAdjusted for age, sex, education, cigarette smoking, alcohol drinking, marital status, family history of atopic diseases and physical exercise.