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Table 1 Description of sociodemographic characteristics of population (n = 3159)

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

Variable N %   Variable N %
Child's sex     Maternal tobacco status in early pregnancy   
   Male 1613 51.1      Non smoker 2250 72.0
   Female 1545 48.9      Former smoker 442 14.1
   Missing 1       Smoker 433 13.9
Level of urbanization        Missing 34  
   Urban 660 20.9   Maternal alcohol consumption in early pregnancy   
   Rural 2499 79.1      Never/occasionally 2661 85.2
Districts of inclusion        ≤ 1 drink/day 405 13.0
   Ille-et-Vilaine 2076 65.7      > 1 drink/day 56 1.8
   Côtes d'Armor - Finistère 1083 34.3      Missing 37  
Year of inclusion     Parity   
   2002 388 12.3      0 1406 44.6
   2003 1203 38.1      1 1171 37.2
   2004 1110 35.1      ≥ 2 572 18.2
   2005 - beginning 2006 458 14.5      Missing 10  
Gestational age at inclusion (weeks of amenorrhea) (mean (min-max)) 11.7 (3.0-19.0)   Marital status   
        Couple 3079 97.6
Season in early pregnancy        Single 75 2.4
   Spring 768 24.3      Missing 5  
   Summer 880 27.9   Gestational or preexisting diabetes   
   Fall 737 23.3      No 2981 96.3
   Winter 774 24.5      Yes 116 3.7
Maternal age at inclusion (years)        Missing 62  
   < 25 345 10.9   High blood pressure during pregnancy   
   25-29 1259 39.9      No 2931 94.4
   30-34 1113 35.2      Yes 174 5.6
   ≥ 35 442 14.0      Missing 54  
BMI before pregnancy (kg/m 2 )     Delivery with cesarean section   
   < 18.5 235 7.5      No 2553 82.6
   18.5-25 2339 74.6      Yes 536 17.4
   25-30 402 12.8      Missing 70  
   ≥ 30 159 5.1     
   Missing 24      
Maternal educational level       
   Primary education 578 18.3     
   Some secondary education 579 18.5     
   High school completed or higher 1995 63.3     
   Missing 7