Table 2 . Association between sociodemographic characteristics and crude prevalence (%) of overweigh and obesity in Tehran.

	Univariate analysis		Multivariate analysis (OR; 95% CI)
	Overweight (25≤BMI<30)	Obesity (BMI≥30)	Overweight (25≤BMI<30)	Obesity (BMI≥30)
Gender
Male	36.76	10.70	Ref	Ref
Female	32.35	15.45	0.66 (0.63-0.69)	1.00 (0.93-1.07)
P for independence	<0.001	<0.001
Age groups
15-24	18.09	4.46	Ref	Ref
25-34	29.60	8.22	1.42 (1.34-1.50)	1.40 (1.27-1.55)
35-44	42.34	16.51	1.98 (1.85-2.11)	2.26 (2.03-2.51)
45-54	44.08	20.60	2.03 (1.90-2.17)	2.62 (2.36-2.92)
55-64	43.71	19.77	1.99 (1.85-2.14)	2.36 (2.11-2.64)
65-74	42.73	16.64	1.93 (1.77-2.10)	1.76 (1.55-2.00)
≥ 75	34.04	14.42	1.36 (1.22-1.51)	1.40 (1.20-1.63)
P for independence	<0.001	<0.001
Education
No formal education	40.28	21.79	Ref	Ref
Primary school	40.77	19.56	1.06 (1.00-1.12)	0.95 (0.89-1.01)
Secondary school	33.14	13.51	1.05 (0.99-1.11)	0.84 (0.79-0.90)
High school	35.66	11.59	1.10 (1.05-1.15)	0.65 (0.62-0.70)
Associate degree	31.16	8.60	1.08 (1.01-1.15)	0.59 (0.54-0.65)
Bachelor and higher	27.84	6.72	0.93 (0.88-0.98)	0.47 (0.44-0.51)
P for independence	<0.001	<0.001
Marital status
Single	20.60	4.88	Ref	Ref
Married	41.76	16.73	1.60 (1.52-1.68)	1.64 (1.51-1.78)
Widow/widower	37.97	23.59	1.61 (1.48-1.75)	2.21 (1.97-2.48)
Divorced	32.30	12.50	1.23 (1.09-1.39)	1.37 (1.15-1.63)
P for independence	<0.001	<0.001
Employment status
Employed	38.06	11.17	Ref	Ref
Unemployed	25.85	7.75	0.88 (0.84-0.93)	0.97 (0.89-1.06)
Student	17.06	4.18	0.82 (0.77-0.88)	0.92 (0.82-1.04)
Housekeeper	39.61	20.76	1.29 (1.23-1.36)	1.57 (1.45-1.70)
Retired	41.99	14.63	0.98 (0.93-1.04)	1.01 (0.94-1.09)
P for independence	<0.001	<0.001