Table 3 Multivariate Cox-proportional hazard regression analysis on predictors of time to initiate postpartum modern contraceptive methods among pregnant women in Ambo town, Central Ethiopia, 2021

Age of the participants

≤25

66 (86.8)

10 (13.2)

1.33 (0.91-1.97)

2.13 (1.02-4.45)*

26-34

168 (71.5)

67 (28.5)

1.31 (0.94-1.84)

1.50 (0.69-3.26)

≥35

43 (95.6)

2 (4.4)

1

1

Pregnancy status

Intended

186 (75)

62 (25)

1

1

Unintended

8(57.1)

6 (42.9)

0.66 (0.38-1.14)

0.57 (0.32-0.94)*

ANC follow up

Yes

170 (76.9)

51 (23.1)

1

1

No

30 (73.2)

11 (26.8)

0.67 (0.45-1.0)

0.83 (0.49-1.43)

Place of delivery

Home

12 (46.2)

14 (53.8)

1

1

Health facility

188 (79.7)

48 (20.3)

1.56 (0.87-2.82)

0.85 (0.36-2.04)

Received PNC

Yes

144 (77.8)

41 (22.2)

1

1

No

56 (72.7)

21 (27.3)

0.80 (0.59-1.09)

0.97 (0.67-1.40)

Want more children

Yes

227 (74.9)

76 (25.1)

1

1

No

50 (94.3)

3 (5.7)

0.75 (0.55-1.03)

1.44 (1.09-2.66)*

Parity

Nulliparous

77 (82.8)

16 (17.2)

1.62 (1.09-2.41)

2.25 (1.02-4.95)*

Primiparous

164 (73.5)

59 (26.5)

1.42 (0.98-2.04)

1.59 (0.90-2.81)

Multiparous

36 (92.3)

3 (7.7)

1

1

Place of residence

Rural

45 (86.8)

7 (13.2)

1

1

Urban

231 (76.2)

72 (23.8)

0.82 (0.63-1.06)

2.05 (1.69-4.03)

Number of children

No child

77 (81.9)

17 (18.1)

1

1

1-4

164 (73.5)

59 (26.5)

0.88 (0.67-1.45)

1.10 (0.91-1.89)

≥5

36 (92.3)

3 (7.7)

0.62 (0.41-0.92)

0.65 (0.56-2.12)