Table 2 Univariable and multivariable-adjusted analysis of factors associated with current pregnancy reported being unintended among pregnant and postpartum adult women enrolled in a prospective observational cohort study in Botswana, 2010-2012

Exposure of interest

Maternal knowledge of HIV status prior to becoming pregnant

0.01

0.02

 Known to be HIV-uninfected

168

(40 %)

1

(ref)

1

(ref)

 HIV status unknown

107

(26 %)

1.77

(1.27, 2.47)

1.71

(1.18, 2.47)

 Known to be HIV-infected

141

(34 %)

1.60

(1.18, 2.16)

1.30

(0.91, 1.86)

Demographics

Location

0.80

0.89

 Mochudi

172

(41 %)

0.97

(0.74, 1.26)

0.98

(0.71, 1.35)

 Gaborone

244

(59 %)

1

(ref)

1

(ref)

Age, in years

0.07

0.02

 18 to 24 years

146

(35 %)

1

(ref)

1

(ref)

 25 to 29 years

104

(25 %)

0.79

(0.65, 1.09)

0.62

(0.41, 0.94)

 30 to 34 years

88

(21 %)

0.82

(0.58, 1.17)

0.43

(0.26, 0.70)

 25 to 39 years

56

(13 %)

1.35

(0.87, 2.11)

0.57

(0.31, 1.06)

 40 years and older

22

(5 %)

1.45

(0.75, 2.80)

0.42

(0.18, 1.00)

Relationship status

<0.0001

<0.0001

 Married

25

(6 %)

0.76

(0.45, 1.27)

0.71

(0.39, 1.28)

 Not in a serious relationship

48

(12 %)

6.57

(3.26, 13.24)

7.18

(3.31, 15.59)

 Not married, but living together

101

(24 %)

1.00

(0.74, 1.36)

0.90

(0.63, 1.28)

 Not married and not living together

242

(58 %)

1

(ref)

1

(ref)

Socioeconomic factors

Education

0.0002

0.22

 None or primary

60

(14 %)

1

(ref)

1

(ref)

 Junior secondary

196

(47 %)

0.44

(0.28, 0.70)

0.60

(0.35, 1.01)

 Senior secondary

116

(28 %)

0.42

(0.26, 0.68)

0.72

(0.40, 1.31)

 Tertiary

43

(10 %)

0.30

(0.17, 0.53)

0.61

(0.31, 1.21)

Employment

0.004

0.003

 Employed

168

(40 %)

1

(ref)

1

(ref)

 Unemployed and looking for work

132

(32 %)

1.58

(1.15, 2.17)

1.02

(0.58, 1.79)

 Unemployed but not looking for work

116

(28 %)

0.93

(0.68, 1.27)

0.54

(0.31, 0.95)

Income^b

0.15

0.24

 None

264

(63 %)

1

(ref)

1

(ref)

 <$57 per month

27

(6 %)

1.37

(0.77, 2.45)

0.81

(0.39, 1.67)

 >$113 per month

58

(14 %)

0.75

(0.53, 1.07)

0.72

(0.39, 1.32)

 $57 to $113 per month

67

(16 %)

0.79

(0.55, 1.14)

0.52

(0.27, 0.99)

Household size

0.02

0.05

 0 to 4 people

101

(24 %)

1

(ref)

1

(ref)

 5 to 6 people

92

(22 %)

1.47

(1.02, 2.13)

1.59

(1.07, 2.36)

 7 to 9 people

102

(25 %)

1.55

(1.08, 2.22)

1.62

(1.07, 2.45)

 10 or more people

119

(29 %)

1.69

(1.19, 2.40)

1.52

(1.02, 2.29)

Television or car in the household

 No

159

(39 %)

0.68

(0.52, 0.90)

0.01

0.85

(0.63, 1.16)

0.31

 Yes

253

(61 %)

1

(ref)

1

(ref)

Reproductive history

Total number of prior pregnancies including current pregnancy

<0.0001

<0.0001

 1

110

(26 %)

1

(ref)

1

(ref)

 2

103

(25 %)

1.00

(0.71, 1.40)

1.56

(1.04, 2.34)

 3

91

(22 %)

1.83

(1.25, 2.68)

3.45

(2.07, 5.75)

 4 or more

112

(27 %)

2.40

(1.65, 3.48)

4.76

(2.62, 8.65)

Any child died before age 5 years

41

(10 %)

0.99

(0.65, 1.53)

0.97

0.57

(0.34, 0.94)

0.03