Chronic respiratory symptoms, lung function and associated factors among flour mill factory workers in Hawassa city, southern Ethiopia: “comparative cross-sectional study”

Table 4 Respiratory symptoms and associated factors in flour mill factory workers, Hawassa city, South Ethiopia, 2018

Variables	At least one chronic respiratory symptoms		COR (95%CI)	AOR (95%CI)
Variables	Yes	No	COR (95%CI)	AOR (95%CI)
Sex
Male	95	62	2.2 (1.1–4.5) *	0.84 (0.3–2.8)
Female	16	23	1.00	1.00
Age (in years)
20–29 years old	48	52	1.00	1.00
30–39 years old	41	25	3.2 (0.9–3.3) *	1.4 (0.6–3.1)
40–49 years old	6	2	3.2 (0.6–16.9) *	1.96 (0.3–13.4)
50–59 years old	11	4	3.0 (0.9–10.0) *	2.5 (0.6–10.7)
≥ 60 years old	5	2	2.7 (0.9–9.9)	2.9 (0.3–31.4)
Educational status
Primary education	90	54	3.7 (1.2–10.6) *	5.8 (1.3–23.2)**
Secondary education	16	20	1.8 (0.5–6.1)	3.1 (0.7–13.3)
More than secondary	5	11	1.00	1.00
Past dust Exposure
Yes	66	45	2.1 (1.2–3.7) *	1.5 (0.7–3.2)
No	35	50	1.00	1.00
Working departments
Cleaning	11	19	1.00	1.00
Loading	37	26	2.5 (1.0–6.0) *	3.1 (0.9–9.6)
Mixing	60	26	4.0 (1.6–9.6) *	5.3 (1.7–16.6) **
Packaging	3	14	0.4 (0.1–1.6)	0.52 (0.1–2.7)
Work experience
1–5 years	19	41	1.00	1.00
6–9 years	44	26	5.7 (2.7–12.4) *	5.1 (2.1–12.5) **
≥ 10 years	48	18	3.6 (1.8–7.6) *	2.5 (1.0–6.1) **
Working hours per day
≤ 8 h	37	47	1.00	1.00
> 8 h	74	38	2.5 (1.4–4.4) *	2.4 (1.2–5.1) **

Note: 1.00 = reference value *p < 0.2 for COR **p < 0.05 for AOR, At least one chronic respiratory symptom: defiend as the development of one of the respiratory symptoms

ISSN: 1471-2458