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Table 1 Sociodemographic characteristics of the group of pregnant adolescents who received care in Belém, Pará, from November 2009 to February 2010

From: Seroprevalence of HIV, HTLV, CMV, HBV and rubella virus infections in pregnant adolescents who received care in the city of Belém, Pará, Northern Brazil

Demographic variable

Number

Percent

Age group

 12 to 14

52

16.1

 15 to 18

272

83.9

Residence

 Capital

248

76.5

 Interior

76

23.5

Years of education

  < 6

212

65.4

 6–9

102

31.5

  > 9

10

3.1

School dropout

 Yes

107

33.0

 No

186

57.4

 Did not attend school

31

9.6

Age at first intercourse

 9 to 11

6

1.9

 12 to 14

197

60.8

 15 to 17

121

37.3

Age of partner

 12 to 18

150

46.3

 19 to 25

146

45.0

 26 to 42

28

8.7

Condom use

 Sometimes

249

76.9

 Never

75

23.1

Gestational age

 1 to 2 months

104

32.1

 3 to 4 months

98

30.2

 5 to 6 months

112

34.6

 7 to 9 months

10

3.1

Vaccination against HBV

 No

228

70.4

 Yes

87

26.8

 Unknown

9

2.8