Table 2 Distribution of symptoms and of putative risk factors among cases and controls according to the occupational sector
From: Diet, occupational exposure and early asthma incidence among bakers, pastry makers and hairdressers
Variable | All | Bakers and pastry-makers | Hairdressers | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Cases (N = 31) | Controls (N = 196) | p | Cases (N = 24) | Controls (N = 111) | p | Cases (N = 7) | Controls (N = 85) | p | Test usedΩ | ||
Body mass index (kg/m2) | Mean [SD] | 25.9 [5.9] | 24.2 [3.9] | 0.13 | 25.6 [5.8] | 25.1 [4.1] | 0.94 | 27.2 [6.3] | 23.1 [3.4] | 0.07 | KW |
Work-related rhinitis symptoms | % | 28 (90.3%) | 77 (39.3%) | <0.001 | 22 (91.7%) | 45 (40.5%) | <0.001 | 6 (85.7%) | 32 (37.7%) | 0.02 | Chi2 |
Work-related eczema symptoms | % | 11 (35.5%) | 23 (11.7%) | 0.002 | 7 (29.2%) | 7 (6.4%) | <0.001 | 4 (57.1%) | 16 (18.8%) | 0.04 | Chi2 |
Work-related urticaria symptoms | % | 7 (22.6%) | 12 (6.1%) | 0.007 | 6 (25.0%) | 4 (3.6%) | 0.002 | 1 (14.3%) | 8 (9.4%) | 0.53 | Fisher |
Personal atopy | % | 26 (83.9%) | 78 (39.8%) | <0.001 | 21 (87.5%) | 44 (39.6%) | <0.001 | 5 (71.4%) | 34 (40.0%) | 0.13 | Chi2 |
Family atopy | % | 12 (38.7%) | 82 (41.8%) | 0.74 | 8 (33.3%) | 37 (33.3%) | 1.00 | 4 (57.1%) | 45 (52.9%) | 1.00 | Chi2 |
Exposure duration (year) | |||||||||||
0 - 4.7 (Q1) | % | 14 (45.1%) | 42 (21.4%) | 11 (45.8%) | 29 (26.1%) | 3 (42.9%) | 13 (15.3%) | ||||
4.8 - 6.6 (Q2) | % | 3 (9.7%) | 55 (28.1%) | 0.02 | 2 (8.3%) | 33 (29.7%) | 0.11 | 1 (14.3%) | 22 (25.9%) | 0.40 | Chi2 |
6.7 - 8.2 (Q3) | % | 7 (22.6%) | 49 (25.0%) | 6 (25.0%) | 25 (22.5%) | 1 (14.3%) | 24 (28.2%) | ||||
8.3 - 13.8 (Q4) | % | 7 (22.6%) | 50 (25.5%) | 5 (20.8%) | 24 (21.6%) | 2 (28.6%) | 26 (30.6%) | ||||
Score of exposure intensity | |||||||||||
Among bakers/pastrymakers§ | Mean [SD] | - | - | - | 5.0 [3.1] | 5.5 [3.5] | 0.59 | - | - | - | KW |
Among hairdressers† | Mean [SD] | - | - | - | - | - | - | 6.9 [1.3] | 4.5 [2.4] | 0.01 | KW |