Table 2– Associations between asthma characteristics before hire and exposure at the first occupation
Subjects nALOHA job exposure matrix#Asthma-specific job exposure matrix
Exposed %OR (95% CI)Adjusted+ OR (95% CI)Exposed %OR (95% CI)Adjusted+ OR (95% CI)
All29847.030.2
Nonasthmatic before hire (ref.)12349.61130.911
Pre-hire-onset asthmatics17545.10.84 (0.54–1.32)0.67 (0.41–1.11)29.70.94 (0.57–1.53)0.73 (0.43–1.24)
Symptom score in childhood§
 0–310247.10.90 (0.54–1.50)0.73 (0.42–1.27)33.31.11 (0.64–1.92)0.88 (0.49–1.58)
 4–55738.60.64 (0.34–1.20)0.49 (0.25–0.99)22.80.66 (0.32–1.36)0.51 (0.24–1.07)
Attacks the year before the first occupationƒ
 No8345.80.86 (0.50–1.49)0.65 (0.36–1.24)30.10.96 (0.53–1.75)0.71 (0.37–1.38)
 Yes8045.00.83 (0.47–1.48)0.68 (0.38–1.23)30.00.95 (0.51–1.76)0.73 (0.39–1.37)
  • Ref.: referrent group. #: exposed (probable exposure to at least one agent, i.e. dust, gases, fumes, pesticides, solvents or metals) versus nonexposed. : exposed (moderate or high probability of exposure to asthmogens, or possible exposure to low-risk irritants or antigens) versus nonexposed. +: adjusted for age at follow-up, sex and diploma level. §: analysis performed in 282 subjects (data missing for symptom score in 16 pre-hire-onset asthmatics). ƒ: analysis performed in 286 subjects (data missing for attacks in the year prior to the first employment in 12 pre-hire-onset asthmatics).