Table 2– Univariate analysis of years of exposure with symptoms before removal from exposure
Subjects nYWSp-value
Sex0.179
 Male451.8 (0.1–8.3)
 Female150.7 (0.2–2.7)
Age yrs0.008
 >40382.4 (0.6–11.9)
 ≤40220.6 (0.0–2.9)
Asthma severity# %0.003
 <18410.1 (0.0–1.4)
 ≥18192.6 (1.0–8.2)
Marital status0.112
 Married322.1 (0.6–10.0)
 Not married281.0 (0.0–4.5)
Children to support0.019
 Yes402.4 (0.0–11.8)
 No200.6 (0.0–2.4)
Agent0.083
 High molecular weight272.4 (0.9–7.0)
 Low molecular weight320.8 (0.0–7.0)
Revenue CAD0.002
 <30,000240.2 (0.0–2.1)
 ≥30,000362.6 (0.9–10.0)
Education0.080
 Primary and secondary level only331.1 (0.1–3.7)
 Higher level273.0 (0.6–12.4)
Time with current employer yrs0.131
 ≥5342.6 (0.6–8.2)
 <5260.9 (0.1–5.3)
  • Data are presented as median (interquartile range), unless otherwise stated. #: asthma severity was defined according to the Quebec Workers' Compensation Board's definition (0%: low severity; 100%: maximum severity). YWS: years of exposure with symptoms before removal from exposure.