Occupational exposure to organic solvents during pregnancy and childhood behavior: findings from the PELAGIE birth cohort (France, 2002–2013)

Table 1 Characteristics of the Study Population (PELAGIE Cohort, France, 2002–2013, N = 715)

	N	Mean ± SD or n (%)
Maternal age (years)	715	30.8 ± 4.0
Maternal education level	714
< 12 years		84 (11.7)
12 years		114 (16.0)
> 12 years		516 (71.3)
Maternal prepregnancy body mass index	715
≤ 25 kg/m²		604 (84.5)
> 25 kg/m²		111 (15.5)
Maternal tobacco consumption (early pregnancy)	710
None		547 (77.0)
< 10 cig/day		118 (16.6)
≥ 10 cig/day		45 (6.3)
Maternal occupational exposure to solvents	715
No		356 (49.8)
Occasional		139 (19.4)
Regular		220 (30.8)
Parity	715
Nulliparous		299 (41.8)
Parous		416 (58.2)
Sex	715
Boys		379 (53.0)
Girls		336 (47.0)
Breastfeeding	715
None		232 (32.4)
< 6 weeks		331 (45.3)
≥ 6 weeks		152 (21.3)
Mother-child interaction at age 2^a	695	19.8 ± 3.5

^aScore varying between 5 and 25 (higher is better). For details, see Additional file 1: Table S2

ISSN: 1476-069X