Table:
Variable	Chronic respiratory symptoms	COR (95 % CI)	AOR (95 % CI)
Yes	No
Sex
Male	187	77	2.65(1.73,.4.05)	2.07(1.18,3.63)*
Female	67	73	1.00	1.00
Age (years)
14-29	99	112	1.00	1.00
30-44	86	24	4.05(2.39,6.87)	3.56(1.80,7.02)***
45+	69	14	5.58(2.96,10.52)	4.20(1.94,9.12)***
Educational status
≤ Grade 8	77	29	3.46(1.93,6.20)	4.07(1.86,8.92)***
Secondary school (Grade 9–12)	134	65	2.69(1.64,4.41)	2.63(1.35,5.12)**
TVET and above	43	56	1.00	1.00
Working department
Raw mill	76	94	1.00	1.00
Burner and clinker	68	33	2.55(1.52,4.26)	2.28(1.18,4.43)*
Cement mill	110	23	5.92(3.44,10.17)	3.72(1.92,7.21)***
Service year
≤5	102	120	1.00	1.00
>5	152	30	5.96(3.72,9.56)	5.44(3.09,9.59)***
Training on respiratory health
Yes	33	44	1.00	1.00
No	221	106	2.78(1.67,4.62)	2.73(1.41,5.29)**
Smoking status
Never smokers	211	146	1.00	1.00
Ever Smokers	43	4	7.44(2.61,21.17)	5.38(1.42,20.39)**
Previous chronic respiratory disease
Yes	38	3	8.62(2.61,28.45)	7.79(2.02,30.04)***
No	216	147	1.00

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| Variable | <COLSPAN=2> Chronic respiratory symptoms | COR (95 % CI) | AOR (95 % CI) | 
 | --- | --- | --- | --- | --- | 
 |  | Yes | No |  |  | 
 | <COLSPAN=5> Sex | 
 | Male | 187 | 77 | 2.65(1.73,.4.05) | 2.07(1.18,3.63)* | 
 | Female | 67 | 73 | 1.00 | 1.00 | 
 | <COLSPAN=5> Age (years) | 
 | 14-29 | 99 | 112 | 1.00 | 1.00 | 
 | 30-44 | 86 | 24 | 4.05(2.39,6.87) | 3.56(1.80,7.02)*** | 
 | 45+ | 69 | 14 | 5.58(2.96,10.52) | 4.20(1.94,9.12)*** | 
 | <COLSPAN=5> Educational status | 
 | ≤ Grade 8 | 77 | 29 | 3.46(1.93,6.20) | 4.07(1.86,8.92)*** | 
 | Secondary school (Grade 9–12) | 134 | 65 | 2.69(1.64,4.41) | 2.63(1.35,5.12)** | 
 | TVET and above | 43 | 56 | 1.00 | 1.00 | 
 | <COLSPAN=5> Working department | 
 | Raw mill | 76 | 94 | 1.00 | 1.00 | 
 | Burner and clinker | 68 | 33 | 2.55(1.52,4.26) | 2.28(1.18,4.43)* | 
 | Cement mill | 110 | 23 | 5.92(3.44,10.17) | 3.72(1.92,7.21)*** | 
 | <COLSPAN=5> Service year | 
 | ≤5 | 102 | 120 | 1.00 | 1.00 | 
 | >5 | 152 | 30 | 5.96(3.72,9.56) | 5.44(3.09,9.59)*** | 
 | <COLSPAN=5> Training on respiratory health | 
 | Yes | 33 | 44 | 1.00 | 1.00 | 
 | No | 221 | 106 | 2.78(1.67,4.62) | 2.73(1.41,5.29)** | 
 | Smoking status |  |  |  |  | 
 | Never smokers | 211 | 146 | 1.00 | 1.00 | 
 | Ever Smokers | 43 | 4 | 7.44(2.61,21.17) | 5.38(1.42,20.39)** | 
 | <COLSPAN=5> Previous chronic respiratory disease | 
 | Yes | 38 | 3 | 8.62(2.61,28.45) | 7.79(2.02,30.04)*** | 
 | No | 216 | 147 | 1.00 |  |