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Table 2 Description of risk factors related to 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) FGR (n = 172)
  Mean (95% CI) N OR (95% CI)
All (std) 3392 (492.4)   
Child's sex    
   Male 3452 (3428-3476)** 87 Ref
   Female 3330 (3305-3355) 85 1.0 (0.7-1.4)
   Missing   0  
Level of urbanization    
   Urban 3393 (3355-3532) 28 Ref
   Rural 3392 (3372-3411) 144 1.4 (0.9-2.1)
Districts of inclusion    
   Ille-et-Vilaine 3386 (3365-3408) 111 Ref
   Côtes d'Armor - Finistère 3403 (3374-3433) 61 1.1 (0.8-1.5)
Year of inclusion    
   2002 3381 (3331-3431) 23 1.1 (0.7-1.8)
   2003 3381 (3353-3410) 64 Ref
   2004 3390 (3361-3420) 56 0.9 (0.6-1.4)
   2005 - beginning 2006 3436 (3390-3482) 29 1.2 (0.8-1.9)
Season in early pregnancy    
   Spring 3406 (3371-3442) 34 Ref
   Summer 3389 (3356-3422) 48 1.2 (0.8-1.9)
   Fall 3380 (3343-3416) 42 1.3 (0.8-2.1)
   Winter 3393 (3358-3429) 48 1.4 (0.9-2.2)
Maternal age at inclusion (years)    
   < 25 3326 (3273-3379)** 21 1.4 (0.8-2.3)
   25-29 3389 (3361-3416) 56 Ref
   30-34 3403 (3374-3433) 70 1.4 (1.0-2.1)
   ≥ 35 3425 (3379-3472) 25 1.3 (0.8-2.1)
BMI before pregnancy (kg/m 2 )    
   < 18.5 3226 (3162-3290)** 12 0.9 (0.5-1.7)
   18.5-25 3389 (3368-3409) 128 Ref
   25-30 3468 (3419-3516) 19 0.9 (0.5-1.4)
   ≥ 30 3500 (3423-3578) 13 1.5 (0.8-2.8)
   Missing   0  
Maternal educational level    
   Primary education 3339 (3298-3380)** 45 1.7 (1.1-2.4)
   Some secondary education 3405 (3364-3446) 27 0.9 (0.6-1.4)
   High school completed or higher 3404 (3382-3426) 100 Ref
   Missing   0  
Maternal tobacco status in early pregnancy    
   Non smoker 3403 (3382-3424)** 114 Ref
   Former smoker 3446 (3400-3493) 18 0.8 (0.5-1.3)
   Smoker 3284 (3237-3331) 40 1.9 (1.3-2.8)
   Missing   0  
Maternal alcohol consumption in early pregnancy    
   Never/occasionally 3389 (3370-3408) 146 Ref
   ≤ 1 drink/day 3420 (3372-3469) 18 0.8 (0.5-1.3)
   > 1 drink/day 3340 (3208-3471) 5 1.7(0.7-4.3)
   Missing   3  
Parity    
   0 3313 (3287-3339)** 79 Ref
   1 3435 (3407-3464) 70 1.1 (0.8-1.5)
   ≥ 2 3503 (3463-3544) 23 0.7 (0.4-1.1)
   Missing   0  
Marital status    
   Couple 3393 (3375-3411) 163 Ref
   Single 3332 (3219-3446) 9 2.6 (1.3-5.3)
   Missing   0  
Gestational or preexisting diabetes    
   No 3392 (3374-3410) 161 Ref
   Yes 3409 (3317-3500) 7 1.1 (0.5-2.5)
   Missing   4  
High blood pressure during pregnancy    
   No 3411 (3393-3429)** 143 Ref
   Yes 3102 (3029-3176) 25 3.3 (2.1-5.3)
   Missing   4  
Cesarean delivery    
   No 3406 (3387-3425)** 131 Ref
   Yes 3325 (3282-3367) 40 1.5 (1.0-2.2)
   Missing   1  
  1. * p < 0.1; ** p < 0.05