Table 4

Results of linear regression for pregnancy duration and birthweight according to seafood intake

Length of gestation (weeks)

Birthweight (grams)

Simple linear regression

Multiple linear regression^b

Simple linear regression^c

Multiple linear regression^b,c

β (95%CI)

p

β (95%CI)

p

β (95%CI)

p

β (95%CI)

p

Frequency of fish intake^a

0.021 (0.004–0.037)

0.01

0.018 (0.002–0.035)

0.03

0.777 (-3.446–5.000)

0.7

-1.556 (-5.587–2.476)

0.8

Frequency of shellfish intake^a

-0.014 (-0.036–0.009)

0.2

-0.018 (-0.041–0.005)

0.1

1.000 (-4.796–6.795)

0.7

1.50 (-4.017–7.016)

1.0

^a models included both fish and shellfish for mutual adjustment. ^b adjusted for maternal age, marital status, education level, parity, bmi, height, smoking status, alcohol consumption, diabetes and sex of the child. ^cadjusted for duration of gestation

Guldner et al. Environmental Health 2007 6:33   doi:10.1186/1476-069X-6-33