Table 3 Poisson regression: Prevalence of and factors associated with adherence to antiretroviral therapy among people living with HIV/AIDS in Felege-Hiwot Referral Hospital, Northwest Ethiopia, (N = 353)

Age in years ^a

18–29

Reference

30–39

1.04

0.73, 1.47

40–49

1.02

0.71, 1.47

50+

1.06

0.69, 1.64

Gender ^a

Male

1.03

0.80, 1.32

Female

Reference

Marital status ^a

Single

Reference

Married/ in relationship

1.13

0.79, 1.61

Divorced/widowed

1.04

0.72, 1.51

Educational status ^a

Illiterate

Reference

Primary education

1.02

0.76, 1.37

Secondary education

1.09

0.80, 1.50

Tertiary education

1.17

0.81, 1.69

Employment ^a

Public employed

1.21

0.88, 1.66

Self employed

1.07

0.82, 1.40

Unemployed

Reference

Perceived social support ^a

High support

1.14

0.74, 1.75

Moderate support

1.14

0.73, 1.78

Low support

Reference

ART regimen ^a

First-line

1.13

0.86, 1.47

Second-line

Reference

Functional disability

No

1.27

0.99, 1.62

1.06

0.79, 1.41

Yes

Reference

Reference

Current CD4 count (last 6 months) ^a

< 200

Reference

200–349

1.08

0.70, 1.68

350–499

1.15

0.76, 1.73

> 500

1.09

0.74, 1.60

ART treatment duration in years ^a

1–5

Reference

6–10

1.05

0.76, 1.45

11 and above

1.06

0.78, 1.44

Major depressive disorder

No

1.48

1.14, 1.92

1.43

1.05, 1.96

Yes

Reference

Reference