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Table 3 Poisson model of relative incidence of fathering a pregnancy over the approximately two years of follow-up among young men and having perpetrated intimate partner violence and relationship control at baseline

From: Perpetration of physical and sexual abuse and subsequent fathering of pregnancies among a cohort of young South African men: a longitudinal study

Model 1: Perpetration of IPV against a girlfriend by temporality

N = 1133

IRR

95% CI

P

None

ref

   

Before the past 12 months only

1.69

0.98

2.93

0.06

Within the past 12 months only

1.67

1.14

2.44

<0.01

Both before and within the past 12 months

1.97

1.31

2.94

<0.01

Model 2: Perpetration of IPV against a girlfriend by type of IPV

N = 1133

IRR

95% CI

P

None

ref

   

Physical abuse only

1.64

1.18

2.29

<0.01

Sexual abuse only

1.17

0.51

2.68

0.71

Physical and sexual abuse

2.59

1.64

4.10

<0.01

Model 3: IPV perpetration by frequency of episodes

 

N = 1144

IRR

95% CI

P

None

ref

   

One episode of physical and/or sexual violence only

1.56

1.04

2.35

0.03

Multiple episodes of physical and/or sexual violence

1.97

1.40

2.78

<0.01

Model 4: Relationship control in current relationship at baseline

N = 1103

IRR

95% CI

P

High equity

ref

   

Mid equity

1.58

1.05

2.37

0.03

Low equity

1.79

1.00

3.21

0.05

  1. All models control for: number of sexual partners in past 12 months, time since last sex, and treatment arm.