Table 3 Odds ratios of PB, LBW and SGA, according to frequency of seafood intake

Frequency of fish intake

Model 1

<1 time a month n = 406

4.5

4.4

7.1

1

1

1

1

1

1

1–4 times a month n = 1266

4.6

3.3

5.1

1.01 (0.58–1.78)

0.62 (0.24–1.61)

0.79 (0.48–1.29)

1.06 (0.60–1.87)

0.59 (0.23–1.55)

0.72 (0.44–1.19)

≥2 times a week n = 606

3.0

1.8

4.5

0.65 (0.32–1.32)

0.65 (0.21–2.09)

0.68 (0.37–1.22)

0.71 (0.35–1.46)

0.59 (0.18–1.91)

0.57 (0.31–1.05)

p (linear trend)

0.1

0.008

0.04

0.2

0.5

0.2

0.3

0.4

0.07

Frequency of shellfish intake

Model 2

<1 time a month n = 1548

4.6

3.4

4.8

1

1

1

1

1

1

1–4 times a month n = 548

3.3

2.4

5.7

0.77 (0.45–1.32)

1.06 (0.44–2.52)

1.21 (0.77–1.91)

0.81 (0.47–1.39)

1.09 (0.45–2.62)

1.33 (0.83–2.11)

≥2 times a week n = 182

2.8

3.3

7.7

0.62 (0.24–1.57)

2.10 (0.67–6.59)

1.89 (1.01–3.52)

0.66 (0.26–1.70)

2.24 (0.70–7.15)

2.14 (1.13–4.07)

p (linear trend)

0.06

0.3

0.05

0.2

0.3

0.05

0.3

0.2

0.02