P value

OR (95% CI)

Characteristic

0.1

0.4

0.02

(reference)

0.49 (0.21 - 1.16)

1.30 (0.67 - 2.51)

2.28 (1.12 - 4.67)

Age

<20 years

20 - 30 years

30 - 40 years

>40 years

0.8

(reference)

1.03 (0.63 - 1.71)

Sex

Males

Females

0.2

(reference)

1.51 (0.79 - 2.85)

Marital status

Unmarried

Married

0.4

(reference)

0.74 (0.34 - 1.56)

Educational level

≥High school

0.6

0.3

0.01

(reference)

1.18 (0.60 - 2.34)

1.42 (0.63 - 3.21)

3.44 (1.40 - 9.09)

Occupation

Unemployed

Manual work

Clerical work

Professional

0.008

(reference)

2.04 (1.84 - 2.33)

Family members

<4 members

≥4 members

0.3

(reference)

1.35 (0.39 - 1.44)

Having chronic illness

No

Yes

0.3

(reference)

1.47 (0.88 - 2.50)

Perceived access to health care (having insurance)

No

Yes