Table 2.

Comparison of respiratory and allergic symptoms between control group and carpenters.

		Control group		Carpenters
Symptoms		No.	%	No.	%	RR	95% CI	Stat. dif.	Power
R.S.	Cough	5	7.57	24	36.36	0.222	0.109‐0.454	P<0.001	0.98
	Sputum	6	9.09	22	33.33	0.273	0.138‐0.540	P<0.001	0.94
	Breathless	8	12.12	11	16.66	0.706	0.356‐1.401	NS	0.09
	Wheezing	7	10.60	10	15.15	0.733	0.354‐1.517	NS	0.13
A. S.	Sneezing	7	10.60	18	27.27	0.407	0.214‐0.775	P<0.01	0.72
	Runny nose	8	12.12	10	15.15	0.800	0.395‐1.622	NS	0.07
	Itchy eyes	6	9.09	15	22.72	0.333	0.165‐0.673	P<0.01	0.53
	Urticaria	2	3.03	2	3.03	1.000	0.207‐4.838	NS	0.04

Values are presented as the number and percentage of subjects of each group having the corresponding symptoms (for each group n = 66), Stat. dif: statistical differences, NS: non‐significant differences, R.S.: respiratory symptoms, A.S.: allergic symptoms.