Table 1 Coding of covariates

Age

1 = 15–19 years

2 = 20–24 years

3 = 25–29 years

4 = 30–34 years

5 = 35–39 years

6 = 40–44 years

7 = 45–49 years

Place of residence

0 = Urban

1 = Rural

Educational level

0 = No education

1 = Primary

2 = Secondary

3 = Higher

Frequency of reading newspaper/magazine

0 = Not at all

1 = Less than once a week

2 = At least once a week

Frequency of listening to the radio

0 = Not at all

1 = Less than once a week

2 = At least once a week

Frequency of watching television

0 = Not at all

1 = Less than once a week

2 = At least once a week

Wealth index

0 = Poorest

1 = Poorer

2 = Middle

3 = Richer

4 = Richest

Distance to health facility

0 = Big problem

1 = Not a big problem