Univariate analysis of the factors for symptomatic
byssinosis showed that dusty worksites, heavy smoking and duration of service years were significant.
Logistic regression analysis showed that working in the scouring (odds ratio 11.0), spinning (odds ratio 4.7)
and weaving sections (odds ratio 2.6), heavy smoking (odds ratio 12.4) and more than 10 years of service (odds
ratio 2.8) were independent significant risk factors