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Table 1 Maternal baseline characteristics. All data are shown as median (IQR) or as number/total number (%)

From: Development and internal validation of a non-invasive clinical tool to predict sufficient omega-3 levels in early pregnancy

Maternal Characteristics

Total Cohort

(n = 307)

Cohort with n-3 serum levels > 4.3% (n = 180)

Cohort with n-3 serum levels ≤ 4.3% (n = 127)

Age, years

32.5 (29.5–35.0)

33.78 (30.2–35.1)

31.61 (28.8–34.8)

Weight, kg

69.0 (61.0–80.0)

68.00 (61.0–78.0)

70.0 (61.0–80.5)

BMI, kg/m2

24.4 (22.2–29.0)

24.28 (22.1–28.3)

24.49 (22.5–29.4)

Caucasian race

220/226 (90.7)

133/134 (99.3)

84/92 (91.3)

Completed high school education†

264/288 (91.7)

152/168 (90.5)

112/120 (93.3)

IRSAD score

5 (4.0–6.0)

5 (4.0–6.0)

5 (4.0–6.5)

Any tobacco use at study entry

5/305 (1.6)

2/178 (1.1)

3/127 (2.4)

Any alcohol use at study entry

9/304 (3.0)

7/177 (4.0)

2/127 (1.6)

Gestational age at blood collection, weeks

14.1 (11.8–15.3)

14.1 (11.8–15.1)

14.1 (11.8–15.6)

Primiparous

113/307 (36.8)

67/180 (37.2)

46/127 (36.2)

Previous preterm delivery

14/269 (5.2)

7/159 (4.4)

7/110 (6.4)

Consumed dietary supplements containing n-3 PUFAs at study entry

100/307 (32.6)

84/180 (46.7)

16/127 (12.6)

  1. †Defined as completion of year 12
  2. IQR = interquartile range; BMI = body mass index, IRSAD = Index of Relative Socioeconomic Advantage and Disadvantage; n-3 = omega-3; PUFA = polyunsaturated fatty acid