Determinants of Chronic Respiratory Symptoms among Pharmaceutical Factory Workers

Table 2

Distribution of previous and family history of CRDs and past dust and chemicals/gas working environment of participants in pharmaceutical factories in Addis Ababa, Ethiopia, May 2017.

Variables	Case () (%)	Control () (%)	Total (%)	value
Previous history of chronic respiratory diseases
Yes	40 (26.5)	25 (8.3)	65 (14.3)	<0.0001
No	111 (73.5)	277 (91.7)	388 (85.7)
Family history of chronic respiratory disease
Yes	45 (29.8)	37 (12.3)	82 (18.1)	<0.0001
No	106 (70.2)	265 (87.7)	371 (81.9)
Previous dusty working environment
Yes	60 (39.7)	65 (21.5)	125 (27.6)	<0.0001
No	91 (60.3)	237 (78.5)	328 (72.4)
Previous chemicals/gas working environment
Yes	48 (31.8)	52 (17.2)	100 (22.1)	0.001
No	103 (68.2)	250 (82.8)	353 (77.9)