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Table 1 Description of study population and variations of adverse pregnancy outcome rates

From: Maternal fish and shellfish intake and pregnancy outcomes: A prospective cohort study in Brittany, France

   PB rates N = 94 (4.2%) LBW rates N = 71 (3.1%) SGA rates N = 120 (5.3%)
  N (%) % p % p % p
Maternal age        
<25 214 (9.4) 6.5 0.3 3.7 0.6 5.6 0.9
25–29 945 (41.5) 3.8   2.9   5.0  
30–34 808 (35.5) 4.0   3.6   5.2  
≥35 310 (13.6) 3.9   2.3   6.2  
Marital status        
Couple 2226 (97.8) 4.2 1.0 3.1 0.7 5.2 0.1
Single 50 (2.2) 4.1   4.0   10.0  
Education level        
None/primary education 16 (0.7) 6.3 0.8 6.3 0.6 12.5 0.2
Secondary education 360 (15.9) 4.8   4.2   7.2  
Baccalaureate 410 (18.1) 4.4   2.7   4.2  
2 years higher education 592 (26.1) 3.9   3.0   5.1  
3 years or more higher education 890 (39.2) 3.9   2.9   4.9  
Parity        
0 1045 (46.0) 5.2 0.02 4.2 0.004 7.4 <10-4
1 831 (36.6) 2.8   2.7   4.0  
≥2 396 (17.4) 4.1   1.0   2.5  
Maternal height (cm)        
<160 421 (18.6) 5.5 0.3 4.5 0.3 9.3 0.0003
160 – <165 793 (34.9) 4.1   3.2   4.9  
165 – <170 617 (27.2) 4.3   2.4   4.7  
≥170 437 (19.3) 3.0   2.8   3.0  
Pre-pregnancy BMI (kg/m 2 )        
<18.5 180 (7.9) 5.6 0.3 3.3 0.8 3.9 0.04
18.5–<25 1725 (76.2) 3.7   3.3   6.0  
25–<30 267 (11.8) 5.7   2.3   1.9  
≥30 93 (4.1) 5.4   2.2   5.4  
Nb of cig/day smoked at inclusion        
0 2022 (88.8) 4.3 0.7 2.9 0.006 4.9 0.02
<10 198 (8.7) 3.1   3.0   7.6  
>= 10 58 (2.5) 3.5   10.3   12.1  
Alcohol drinking        
0 drink per week 2216 (98.3) 4.1 0.3 3.0 0.009 5.1 0.2
1 drink per week or more 39 (1.7) 7.7   10.3   10.3  
Diabetes        
No 2200 (96.6) 3.9 0.006 3.1 0.7 5.2 0.6
Yes 78 (3.4) 10.3   3.9   6.4