Table 3 Univariate and multivariable logistic regression on factors associated with performing one anti-HIV test, Brazil, 2011-2012

Region of residence

Southeast

7.783

88.2

1

1

North

1.439

69.9

0.31

0.19-0.50

<0.001

0.47

0.30-0.76

<0.001

Northeast

4.616

68.4

0.29

0.21-0.40

0.38

0.28-0.52

South

2.365

92.9

1.75

1.21-2.55

1.77

1.20-2.59

Midwest

694

83.2

0.67

0.42-1.06

0.79

0.53-1.18

Maternal age

12 to 19 years

3.364

75.2

1

<0.001

1

20 to 34 years

11.894

83.0

1.61

1.40-1.85

1.12

0.95-1.31

0.033

35 and over

1.633

85.8

2.00

1.64-2.46

1.33

1.07-1.64

Schooling level (years)

11 or more

7.658

88.2

1

1

8 to 10

4.481

80.7

0.56

0.49-0.65

<0.001

0,78

0.68-0.90

<0.001

0 to 7

4.669

72.3

0.35

0.30-0.41

0,64

0.54-0.76

Skin color ⁵

White

5.634

88.6

1

1

Mixed

9.520

78.3

0.43

0.34- 0.55

<0.001

0.77

0.67-0.90

0.001

Black

1.478

77.1

0.46

0.39- 0.53

0.73

0.57-0.94

Conjugal situation

With partner

13.724

82.4

1

1

Without partner

3.155

78.7

0.79

0.68-0.91

0.001

0,93

0.79-1.09

0.345

Prenatal service

Public

13.413

79.3

1

<0.001

1

Private

3.462

91.2

2.49

2.02-3.07

1.47

1.17-1.86

0.001

Start of prenatal care

>28^th week

747

59.3

1

1

13^th to 28^th weeks

7.079

77.6

2.43

1.91-3.09

<0.001

1.88

1.39-2.54

<0.001

Up to 12^th week

9.020

87.0

4.68

3.66-5.99

2.34

1.70-3.21

Adequate number of consultations ⁶

No

4.756

66.7

1

<0.001

1

Yes

12.141

87.5

3.45

2.99-3.99

2.17

1.87-2.52

<0.001