Table 3 Multiple logistic regression analysis for factors associated with SMPs at Gondar town, Northwest Ethiopia, 2018

Sex of participants

Male

1

1

Female

0.93 (0.68, 1.28)

0.75 (0.53, 1.51)

0.51

Age in years

< 30

1

1

30–45

0.65 (0.39, 1.09)

0.51 (0.25, 1.25)

0.18

≥ 45

1.14 (0.62, 2.10)

1.63 (0.38, 3.12)

0.46

Marital status

Single

1.83 (1.33, 2.52)

3.12 (2.35, 5.34)*

0.01

Married

1

1

Peer pressure

No

1

1

Yes

4.72 (3.36, 6.63)

3.58 (2.89, 7.28)*

0.001

Monthly household income

< ETB 1000 (< USD 37.7)

1

1

≥ ETB 1000 (≥ USD 37.7)

0.69 (0.49, 0.97)

0.52 (0.34, 1.17)

0.32

Access to pharmacy

No

1

1

Yes

4.09 (2.93, 5.70)

2.32 (1.65, 6.76)*

0.001

Family size

< 5 members

1

1

≥ 5 members

0.81 (0.55, 1.18)

0.62 (0.37, 1.39)

0.25

Perceived quality of health care

Good

1

1

Poor

1.83 (1.25, 2.68)

4.67 (2.56, 7.96)*

0. 001

Perceived cost

Expensive

1

1

Cheap

1.04 (0.76, 1.43)

2.17 (0.64, 5.84)

0.67

Knowledge

Not knowledgeable

1

1

Knowledgeable

0.12 (0.08, 0.17)

0.27 (0.16, 0.39)*

0.01