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Table 3 Maternal intake (g/day) of seafood and marine long chain n-3 polyunsaturated fatty acids (LCn-3PUFA) from food and dietary supplements in 67,007 women with and without preterm delivery (PTD) in the Norwegian Mother and Child Cohort Study (MoBa) 2002–2008

From: Maternal intake of seafood and supplementary long chain n-3 poly-unsaturated fatty acids and preterm delivery

 

N (%)

Total seafood

Lean fish

Fatty fish

Food LCn-3PUFA

Suppl. LCn-3PUFA

Median (P5, P95)

Median (P5, P95)

Median (P5, P95)

Median (P5, P95)

Median (P5, P95)

Overall preterm delivery

  No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

  Yes

3630 (5.4)

32.1 (3.5, 78.6)

17.7 (0, 44.8)

7.6 (0, 40.3)

0.34 (0.08, 1.32)

0.16 (0, 1.60)

Crude p-value a

 

<0.001

<0.001

<0.001

<0.001

0.936

Adjusted p-value b

 

0.004

0.008

0.349

0.171

0.879

Subcategories by delivery initiation c

Spontaneous preterm deliveries

 No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

 Yes

2051 (3.1)

31.7 (3.0, 78.4)

17.9 (0, 45.1)

7.6 (0, 39.3)

0.33 (0.08, 1.32)

0.16 (0, 1.60)

Crude p-value

 

<0.001

0.011

0.001

<0.001

0.680

Iatrogenic preterm delivery

 No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

 Yes

1491 (2.2)

33.0 (4.1, 78.6)

17.5 (0, 45.3)

7.6 (0, 42.6)

0.35 (0.09, 1.33)

0.15 (0, 1.60)

Crude p-value

 

0.031

0.008

0.045

0.123

0.294

Subcategories by week of delivery

Late PTD (35 to <37 w)

 No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

 Yes

2659 (4.0)

31.8 (3.5, 78.3)

17.7 (0, 44.1)

7.6 (0, 39.6)

0.34 (0.09, 1.32)

0.16 (0, 1.60)

Crude p-value

 

<0.001

<0.001

0.002

0.001

0.720

Moderately PTD (32 to <34w)

 No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

 Yes

491 (0.7)

33.6 (3.0, 81.0)

17.5 (0, 45.5)

8.1 (0, 44.1)

0.35 (0.08, 1.44)

0.15 (0, 1.60)

Crude p-value

 

0.530

0.155

0.378

0.712

0.386

Early PTD (22 to <32 w)

      

 No

63,377 (94.6)

33.5 (6.2, 75.9)

18.5 (0, 45.2)

8.3 (0, 38.3)

0.35 (0.10, 1.27)

0.16 (0, 1.60)

 Yes

480 (0.7)

32.0 (3.3, 78.0)

18.1 (0, 45.8)

7.2 (0, 38.6)

0.33 (0.09, 1.23)

0.14 (0, 1.60)

Crude p-value

 

0.102

0.467

0.018

0.016

0.050

  1. P5: 5th percentile, P95: 95th percentile
  2. aCrude P-values from non-parametric Mann-Whitney U test
  3. bAdjusted P-values from Cox regression with continuous seafood variables adjusted for the other seafood and LCn-3PUFA variables when relevant, maternal age, pre-pregnancy BMI, height, parity, energy intake, maternal education, smoking, marital status, household income and previous preterm delivery
  4. cMissing data on delivery initiation for 88 preterm deliveries
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BMC Pregnancy and Childbirth

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