Changes in Body Mass Index across Age Groups in Iranian Women: Results from the National Health Survey

Table 2

Adjusted* odds ratios for the likelihood of being overweight and obese^§‡, by sociodemographic and smoking among random sample of 14176 Iranian women in the proportional odds model, 1999-2000.

Variable	OR^#	95% CI^†
Age group (years)
20–30	1.00
30–40	2.16	1.96–2.35
40–50	2.93	2.67–3.23
50–60	2.96	2.63–3.32
60–69	1.99	1.76–2.25
Education level
Basic	1.00
Moderate	0.90	0.83–0.98
High	0.57	0.47–0.69
Economy index
Low	1.00
Lower-middle	1.37	1.26–1.50
Upper-middle	1.38	1.27–1.51
High	1.49	1.36–1.63
Place of residence
rural	1.00
urban	1.97	1.84–2.11
Workforce
Inactive	1.00
Active	0.57	0.51–0.64
Smoking status
Nonsmoker	1.00
Smoker	0.68	0.54–0.85
Marital status
Non-married	1.00
Married	1.19	1.10–1.29

*Adjusted for all other variables.
^§Obese, BMI ≥ 30; overweight BMI 25.0–29.9.
^‡BMI: body mass index (weight (kg)/height (m)²).
^#OR: odds ratio.
^†CI: confidence interval.