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Table 1 Characteristics of teen mothers whose first pregnancy occurred during adolescence and after wave 1 at the add health study, 1996-2007 (N = 763)

From: Academic performance, educational aspiration and birth outcomes among adolescent mothers: a national longitudinal study

 

Overall sample (n = 763)

Black (n = 244)

Non-black (n = 519)

P-value

Birthweight (kg) (mean[se])

3.23(0.03)

3.10(0.05)

3.27(0.03)

<0.01

Gestational age (week) (mean[se])

39.29(0.11)

39.16(0.2)

39.33(0.12)

0.49

Baseline age (year) (mean[se])

15.33(0.14)

15.36(0.26)

15.32(0.15)

0.89

Age at pregnancy (year) (mean[se])

17.80(0.09)

17.67(0.13)

17.83(0.09)

0.20

Baseline BMI category (n [%])

   

0.03

Underweight

96(15.02)

25(10.88)

71(16.28)

 

Normal weight

508(67.24)

155(63.43)

353(68.4)

 

Over weight

119(13.07)

50(20.69)

69(10.74)

 

Obese

40(4.68)

14(5.00)

26(4.58)

 

Parental education ([n%])

   

0.41

≥HS

606(80.64)

213(83.44)

393(79.79)

 

Less than HS

157(19.36)

31(16.56)

126(20.21)

 

Educational aspiration(non-standardized) (mean[se])*

−0.09(0.06)

0.06(0.09)

−0.14(0.06)

0.05

GPA

   

0.04

Below average

312(42.99)

98(50.84)

214(40.59)

 

Above average

451(57.01)

146(49.16)

305(59.41)

 

Ever skipped a grade (n [%])

   

0.85

No

744(97.57)

239(97.78)

505(97.51)

 

Yes

19(2.43)

5(2.22)

14(2.49)

 

Ever repeated a grade (n [%])

   

0.20

No

618(79.82)

187(75.52)

431(81.14)

 

Yes

145(20.18)

57(24.48)

88(18.86)

 

Smoking during pregnancy (n [%])

   

<.0001

No

607(74.93)

230(93.81)

377(69.16)

 

Yes

156(25.07)

14(6.19)

142(30.84)

 

Initiation of prenatal care (n [%])

   

0.58

1st trimester

541(69.14)

174(71.63)

367(68.37)

 

2nd trimester

154(21.77)

50(21.65)

104(21.81)

 

3rd trimester or no prenatal care

68(9.09)

20(6.71)

48(9.82)

 
  1. *Range of Educational aspiration score (non-standardized):−3.46, 1.23.