TABLE 1

Characteristics of the Children Enrolled in the Study

All5–6 y Old7–8 y Old9–10 y Old11–12 y Old≥13 y OldP
n1031931201914
Sex, male/female59/4411/816/1510/1011/811/3.31
Age, y, mean (SD)9.1 (2.8)5.7 (0.5)7.3 (0.5)9.7 (0.5)11.4 (0.5)13.4 (1.4).26
Way of enrollment, n (%).11
 Social network65 (63)13 (68)23 (74)12 (60)9 (47)8 (57)
 Outpatients38 (37)6 (32)8 (26)8 (40)10 (53)6 (43)
Socioeconomic category of parents, n (%).82
 At least 1 parent a health care worker35 (34)8 (42)10 (32)6 (30)4 (21)7 (50)
 Other68 (66)11 (58)21 (68)14 (70)15 (79)7 (50)
Socioeconomic category of parents according to INSEE, n2003759393827.17
 1 farmers, n (%)14 (7)2 (5)5 (9)1 (3)4 (10)2 (7)
 2 craftsman, shopkeeper and large retailer, chairman, and managing director, n (%)15 (7.5)3 (8)2 (3)1 (3)5 (13)4 (15)
 3 senior executive, managers, and higher intellectual professions, n (%)83 (41.5)21 (57)29 (49)9 (23)14 (37)10 (37)
 4 intermediate jobs, n (%)49 (24.5)7 (19)16 (27)15 (38)6 (16)5 (19)
 5 low-grade white collar, n (%)21 (10.5)4 (11)08 (20)6 (16)3 (11)
 6 blue collar, n (%)10 (5)03 (5)4 (10)3 (8)0
 7 retired, n (%)000000
 8 unemployed, n (%)8 (4)04 (7)1 (3)03 (11)