Table 2 Effects of socioeconomic and demographic factors on BMI using multilevel linear regression

 40–44

0.467

0.264 to 0.670

0.103

4.52

< 0.001

 45–49

0.885

0.677 to 1.094

0.106

8.33

< 0.001

 50–54

0.932

0.712 to 1.151

0.112

8.31

< 0.001

 55–59

0.629

0.388 to 0.870

0.122

5.12

< 0.001

 60–64

0.363

0.091 to 0.636

0.139

2.62

0.009

  > 65

−0.034

−0.367 to 0.297

0.169

−0.21

0.836

 female

2.546

2.691 to 2.40

0.074

34.31

< 0.001

 Single (ref.)

–

–

–

–

–

 Married

2.429

1.960 to 2.897

0.239

10.16

< 0.001

 Other

2.530

2.012 to 3.049

0.264

9.57

< 0.001

 Illiterate (ref.)

–

–

–

–

–

 Primary

−0.324

−0.500 to − 0.148

0.089

−3.61

< 0.001

 Tips

−0.425

− 0.637 to − 0.214

0.107

−3.95

< 0.001

 Diploma

−1.09

−1.307 to − 0.872

0.110

−9.84

< 0.001

 Academic Degree

−1.425

−1.679 to −1.170

0.129

−10.97

< 0.001

 Have Diabetes

0.334

0.141 to 0.526

0.098

3.40

< 0.001

 Have Hypertension

1.505

1.343 to 1.667

0.082

18.21

< 0.001

 Have Cardiac Ischemic

0.227

0.004 to 0.450

0.113

2.00

0.045

 No (ref.)

–

–

–

–

–

 Yes

−0.48

−0.664 to −0.295

0.094

−5.09

< 0.001

 No (ref.)

–

–

–

–

–

 Yes

0.523

0.242 to 0.803

0.143

3.65

< 0.001

 Poorest (ref.)

–

–

–

–

–

 Poor

−1.028

−1.217 to −0.839

0.096

−10.67

< 0.001

 Middle

3.538

3.344 to 3.732

0.099

35.67

< 0.001

 Rich

5.266

5.061 to 5.470

0.104

50.52

< 0.001

 Richest

6.204

5.971 to 6.438

0.119

77.21

< 0.001