Table 2 Comparison of socio-demographic characteristics between lost subjects and the others participants

Size, n (%)

90 (20.4%)

351 (79.6%)

Age, mean (SD; in years)

17,0 (1.4)

16,9 (1.4)

0.33

Sex

0.16

   Male, n (%)

57 (63.3%)

194 (55.3%)

   Female, n (%)

33 (36.7%)

157 (44.7%)

Apprentices

0.16

   Bakers, n (%)

39 (44.3%)

122 (34.8%)

   Pastry-makers, n (%)

24 (26.7%)

87 (24.8%)

   Hairdressers, n (%)

27 (30.0%)

142 (40.4%)

Atopic status

0.27

   Atopy, n (%)

45 (50.0%)

198 (56.4%)

   Non atopy, n (%)

45 (50.0%)

153 (43.6%)

Active cigarette smoking

0.005

   Smokers, n (%)

52 (57.8%)

145 (41.3%)

   Non-smokers, n (%)

38 (42.2%)

206 (58.7%)