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Table 4 Relation between agricultural activities and birth weight and FGR status (n = 3159)

From: Impact on fetal growth of prenatal exposure to pesticides due to agricultural activities: a prospective cohort study in Brittany, France

    Birth weight (g)a FGR (n = 172)b
Variable N Number of municipalities Mean (95% CI) P-trend Control Case OR (95% CI) P-trend
Level of urbanization        
   Urban 660 7 3399 (3343-3455) 0.28 616 28 Ref 0.15
   Rural 2499 529 3381 (3332-3430)   2314 144 1.4 (0.9-2.1)  
In rural municipalities
Percentage of area used agriculturally        
   Low 1039 177 3381 (3325-3438) 0.36 956 65 Ref 0.87
   Medium 817 174 3375 (3317-3433)   759 43 0.9 (0.6-1.4)  
   High 643 178 3363 (3303-3423)   599 36 1.0 (0.6-1.5)  
Percentage of area used for corn        
   Low 990 183 3382 (3325-3438) 0.35 913 59 Ref 0.61
   Medium 816 172 3375 (3316-3433)   759 45 1.0 (0.7-1.6)  
   High 693 174 3364 (3305-3423)   642 40 1.1 (0.7-1.7)  
Percentage of area used for wheat        
   Low 769 186 3375 (3319-3432) 0.66 714 45 Ref 0.66
   Medium 842 172 3382 (3325-3439)   777 50 1.2 (0.8-1.8)  
   High 888 171 3368 (3311-3424)   823 49 1.1 (0.7-1.7)  
Colza crop         
   No 387 95 3391 (3327-3454) 0.35 364 19 Ref 0.14
   Yes 2112 434 3370 (3316-3424)   1950 125 1.5 (0.9-2.5)  
Pea crop         
   No 962 273 3381 (3325-3437) 0.47 895 50 Ref 0.12
   Yes 1537 256 3369 (3314-3425)   1419 94 1.3 (0.9-1.9)  
Potato crop         
   No 1340 282 3374 (3318-3430) 0.95 1239 74 Ref 0.94
   Yes 1159 247 3375 (3319-3431)   1075 70 1.0 (0.7-1.4)  
Vegetable crop         
   No 904 211 3389 (3331-3447) 0.19 846 46 Ref 0.59
   Yes 1595 318 3368 (3314-3423)   1468 98 1.1 (0.8-1.6)  
  1. a: All models adjusted for maternal tobacco status at inclusion, parity, child's sex, high blood pressure, gestational and pre-pregnancy diabetes, gestational age, gestational age squared, pre-pregnancy BMI and height of mother; b: All models adjusted for maternal tobacco status at inclusion, maternal education level, high blood pressure during pregnancy and marital status.