Table 2 The univariate and multivariate analysis of the determinants of adverse pregnancy outcome for different explanatory variables categories, Debre Tabor town, Northwest Ethiopia

Maternal age

≤ 24

1

1

25–34

1.34 (0.76, 2.37)

1.15 (0.63, 2.1)

35–44

3.15 (1.73, 5.74)*

2.54 (1.27, 5.06)*

45–54

4.23 (2.24, 7.99)*

2.79 (1.27, 6.16)*

≥ 55

6.86 (3.39, 13.87)*

4.18 (1.73, 9.13)*

Residence

Rural

1.55 (1.09, 2.18)*

1.51 (1.03, 2.21)*

Urban

1

1

Marital status

Married

1

1

Divorced

1.72 (1.08, 2.73)*

1.08 (0.64, 1.83)

Widowed

2.78 (1.53, 5.05)*

1.02 (0.5, 2.07)

Separated

0.96 (0.49, 1.86)

0.95 (0.46, 1.93)

Educational status

No formal education

2.37 (0.89, 6.32)

2.15 (1.41, 2.81)*

Primary education

2.77 (1.01, 7.56)*

1.6 (1.06, 4.6)*

Secondary education

1.83 (0.64, 5.22)

1.45 (0.48, 1.93)

Higher education

1

1

Job status

Unemployed

1.23 (0.9, 1.77)

Employed

1

Family income categorized

≤ 560

1.6 (1.03, 2.58)*

1.23 (0.72, 2.11)

561–900

1.2 (0.76, 1.89)

1.14 (0.68, 1.94)

901–1700

0.86 (0.54, 1.38)

0.93 (0.56, 1.57)

≥ 1701

1

1

Age at time first sex

≤ 14

4.03 (2.34, 6.95)*

2.29 (1.25, 4.23)*

15–17

1.31 (0.911, 1.88)

1.32 (0.89, 2.19)

≥18

1

1

Duration of relationship

≤ 5

1

1

6–10

1.43 (0.95, 2.16)

1.3 (0.86, 2.19)

11–15

1.90 (1.14, 3.15)*

1.04 (0.57, 1.92)

≥ 16

2.74 (1.79, 4.2)*

1.24 (0.68, 2.28)

Previous history of marriage

Yes

1.63 (0.73, 3.65)

No

1

Age difference between the partner at first intercourse

No difference

1

1

< 5 years

1.07 (0.64, 1.79)

1.07 (0.6, 1.89)

≥ 5 years

2.44 (1.57, 3.80)*

1.74 (1.07, 2.83)*

Type of marriage

Monogamous

Ref

Polygamous

1.05 (0.72, 1.54)