Prevalence of Acute Symptoms among Workers in Printing Factories

Table 5

Prevalence of rhinitis in the preceding 6 months, by independent variables: position worked, duration of work, hours worked per day, days worked per week, air ventilation system, and use of PPE.

Independent variable	Prevalence (%)	Count	value
Work position
Worked in printing process	89.7	52	<0.001
Did not work in printing process	25.0	23
Duration of work (years)
<5	28.7	29	0.002
≥5	61.3	46
Hours worked per day
≤8	25.3	19	<0.001
>8	74.7	56
Days worked per week
≤6	30.7	23	0.003
>6	69.3	52
Air ventilation system
General system (open window and doors)	50.7	38	0.667
Local system (hood)	49.3	37
Used safety glasses at work
No	53.3	40	0.068
Yes	46.7	35
Used mask at work
No	73.3	55	0.001
Yes	26.7	20