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Table 2 White subgroup demographic and clinical characteristics

From: Variation in endoglin pathway genes is associated with preeclampsia: a case–control candidate gene association study

Variable

Cases (n = 181)

Controls (n = 174)

p-value

Maternal age, years (M (SD))

28.3 (5.8)

28.4 (5.7)

0.87a

Gravida (Mdn (min-max))

1 (1-6)

1 (1-8)

0.08b

Nulliparous (n, %)

146 (80.7%)

139 (79.9%)

0.85c

Gestational age at delivery, wks (M (SD))

36.1 (3.2)

39.6 (1.1)

< 0 .001 d

Birthweight, grams (M (SD)) e

2497.5 (841.2)

3481.6 (446.3)

< 0.001 d

Avg. SBP < 20 weeks’, mm Hg (M (SD)) f

116.6 (9.6)

112.1 (7.5)

< 0.001 d

Avg. DBP < 20 weeks’, mm Hg (M (SD)) f

71.7 (7.2)

68.1 (4.9)

< 0.001 d

Avg. SBP in labor, mm Hg (M (SD)) g

154.8 (13.9)

120.4 (10.2)

< 0.001 d

Avg. DBP in labor, mm Hg (M (SD)) h

92.6 (8.0)

72.3 (7.2)

< 0. 001 a

Pre-pregnancy BMI (Mdn (min-max)) i

25.8 (17-46)

22.9 (16-37)

< 0.001 b

  1. Abbreviations: (M (SD)), mean (standard deviation); (Mdn (min-max)), median (minimum-maximum); wks, weeks; Avg. SBP, average systolic blood pressure; mmHg, millimeters of mercury; Avg. DBP, average diastolic blood pressure; BMI, body mass index.
  2. a Independent samples t-test.
  3. b Mann–Whitney U test.
  4. c χ2 test of independence.
  5. d Independent samples t-test with unequal variance.
  6. e Outlier removed in controls.
  7. f n = 168 cases & n = 170 controls.
  8. g n = 181 cases & n = 173 controls.
  9. h n = 180 cases & n = 173 controls.
  10. i BMI values imputed for n = 22 cases, sample size n = 178 cases & n = 172 controls.
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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