Table 4– Performance of the prediction model in 674 randomly selected traditional and industrial bakers: prevalence of respiratory symptoms, medication use, absenteeism and job change by score
ScoreTotal
LowIntermediateHigh
Subjects372 (55.2)163 (24.2)139 (20.6)674 (100.0)
Age yrs41.6±11.136.9±10.638.8±10.439.9±11.0
Working time yrs16.3±11.712.1±8.914.0±10.214.8±10.9
Respiratory symptoms in last 12 months
 Wheezing10 (9.1)37 (33.6)63 (57.3)110 (100.0)
 Asthma attack#0 (0.0)7 (29.2)17 (70.8)24 (100.0)
 Awakened by an asthma attack0 (0.0)4 (30.8)9 (69.2)13 (100.0)
 Asthma attack after exercise0 (0.0)6 (33.3)12 (66.7)18 (100.0)
Work-related respiratory symptoms and other characteristics
 Asthma attacks that improve if not working0 (0.0)4 (22.2)14 (77.8)18 (100.0)
 Asthma attacks after work0 (0.0)1 (8.3)11 (91.7)12 (100.0)
 Wheezing that improves if not working#1 (2.2)7 (15.6)37 (82.2)45 (100.0)
 Eye symptoms that improve if not working#4 (5.0)21 (26.3)55 (68.8)80 (100.0)
 Running nose/sneezing that improves if not working#14 (9.9)41 (28.9)87 (61.3)142 (100.0)
 Absenteeism due to asthma0 (0.0)6 (50.0)6 (50.0)12 (100.0)
 Change of job or task within bakery due to work-related allergy0 (0.0)1 (12.5)7 (87.5)8 (100.0)
Medication use
 Asthma medication in last 12 months6 (9.7)16 (25.8)40 (64.5)62 (100.0)
 Long-acting β2-mimetics0 (0.0)2 (100.0)0 (0.0)2 (100.0)
 Inhalation corticosteroids plus long-acting β2-mimetics5 (9.8)14 (27.5)32 (62.7)51 (100.0)
 Short-acting β2-mimetics5 (12.2)13 (31.7)23 (56.1)41 (100.0)
  • Data are presented as n (%) or mean±sd. #: question identical to a predictor in the model. : p<0.03 versus intermediate and high score (ANOVA).