Table IV.

Prevalence of respiratory symptoms, with corresponding risk, according to occupation (to be continued)

Variables	Wheezing		Respiratory discomfort		Shortness of breath at rest		Shortness of breath on exertion		Cough
	OR[IC95%]	P*	OR[IC95%]	P*	OR[IC95%]	P*	OR[IC95%]	P*	OR[IC95%]	P*
Age
≤ 30	0,99[0,94-1,03]	0,70	0,99[0,95-1,04]	0,95	1,01[0,94-1,05]	0,98	2,75[1,23-6,14]	0,013	1,02[0,97-1,08]	0,37
> 30	1		1		1		1		1
Seniority (years)
≤ 5	1,25[0,76-2,03]	0,369	1,13[0,67-1,9]	0,64	1,07[0,59-1,94]	0,81	1,41[1,56-1,84]	0,043	0,59[0,30-1,14]	0,12
> 5	1		1		1		1		1
Working hours (hours)
≤ 12	0,93[0,85-1,03]	0,27	0,85[0,85-1,06]	0,43	1,06[0,84-1,17]	0,17	1,22[1,44-3,32]	0,69	1,66[0,74-4,43]	0,31
> 12	1		1		1		1		1
Smoking
yes	0,96[0,59-1,55]	0,87	1,23[0,73-2,05]	0,43	0,83[0,48-1,42]	0,51	1,30[1,22-2,27]	0,35	1,03[0,58-1,82]	0,90
no	1		1		1		1		1
Occupation
miller	2,47[1,48-4,11]	<0,01	2,75[1,56-4,83]	<0,01	7,85[3,27-18,84]	<0,01	3,69[9,57-24,81]	<0,01	7,16[2,96-17,29]	<0,01
control	1		1		1		1		1
Education
primary, secondary (incomplete)	0,87[0,52-1,46]	0,12	1,12[0,65-1,91]	0,67	0,71[0,37-1,38]	0,32	0,61[0,31-1,18]	0,14	1,13 [0,59-2,15]	0,7
secondary completed, more	1		1		1		1		1