Table 3 Bivariate and multivariate cox regression of CBF among mothers who have index children aged two to three years Debre Markos, northwest Ethiopia 2016 (n = 483)

 < =24

1

1

 25–29

1.59 (0.94,2.69)

1.27 (0.73,2.20)

 30–34

 ≥ 35

2.05 (1.19,3.53)

1.33 (0.72,2.43)

2.48(1.36,4.53)

1.34 (0.67,2.65)

 Married

0.61 (0.38,1.00)

0.77 (0.43,1.37)

 Divorced

1.20 (0.51, 2.87)

0.44 (0.32,2.22)

 Widowed

1

1

 Non educated and Informal Education

1

1

 Primary education

0.66 (0.39,1.13)

0.72 (0.42,1.26)

 Secondary education

0.69 (0.44,1.12)

0.59 (0.34,1.03)

 Certificate and above

1.00 (0.65,1.54)

0.45 (0.24, 0.85)^*

 Non educated or Informal Education

1

1

 Primary education

0.65 (0.36,1.17)

1.04 (0.52, 2.07)

 Secondary education

0.65(0.39,1.08)

0.93 (0.49,1.77)

 Certificate and above

1.06 (0.69,1.61)

1.04 (0.53, 2.05)

 House wife

1

1

 Government

2.46 (1.72,3.51)

2.81(1.80, 4.38)^*

 Private organization

0.62 (0.15,2.53)

0.76 0.18, 3.13)

 Private(self) work

1.01 (0.65,1.57)

0.95 (0.61, 1.49)

  ≤ 29.5$

1

1

 29.6–63.6$

0.36 (0.20, 0.64)

0.29(0.16, 0.54)^*

 63.7–106.8$

0.50 (0.30, 0.83)

0.40 (0.24, 0.68)^*

 106.9–161.4$

0.38 (0.22, 0.69)

0.29 (0.16, 0.55)^*

  ≥ 161.41$

0.97 (0.63,1.48)

0.48 (0.29, 0.81)^*

 Yes

1

1

 No

1.08 (0.55, 2.11)

1.13 (0.53,2.38)

  ≤ 4

0.8 (0.58,1.10)

0.88 (0.58,1.34)

  > 4

1

1

 At home

1

1

 Government hospital

1.93 (1.01,3.68)

2.30 (1.15, 4.62)*

 Health center, post

1.75 (0.86,3.55)

2.04 (0.96, 4.32)

 Health professional

1

1

 Relative/friend

0.53 (0.27, 1.04)

1.08 (0.26, 4.38)

 Cesarean section

1.523 (0.931, 2.49)

1.3 (0.75, 2.24)

 Vaginal

1

1

 Yes

1.30 (0.90, 1.87)

1.29 (0.89, 1.87)

 No

1

1

  ≤ 3

0.57(0.38, 0.86)

0.43 (0.28, 0.65)^*

  > 3

1

1

 Positive

2.66 (1.61, 4.42)

3.42 (1.96, 5.94)^*

 Negative

1

1

 Yes

1

1

 No

1.12 (0.82, 1.54)

1.31 (0.93, 1.85)

 Favorable

1

1

 Unfavorable

0.81 (0.59, 1.11)

0.81 (0.88, 1.71)