Table 3.

Prevalence (%) of respiratory symptoms and asthma by socioeconomic groups (SEI), occupational groups (NYK and SSYK), and self-reported occupational exposure to VGDF.

.	Productive cough	Recurrent wheeze	Allergic rhino-conjunctivitis	Rhinitis	Current asthma	Allergic asthma	Non-allergic asthma
All	9.1	12.1	23.9	21.6	9.2	5.4%	3.8%
SEI
Manual workers industry	10.8	14.6	20.9	22.1	9.0	4.8	4.1
Manual workers service	10.1	14.1	24.5	24.3	11.0	6.3	4.7
Non-manual employees L	9.5	10.8	23.8	21.4	7.9	4.3	3.5
Non-manual employees I	7.4	9.1	25.9	18.9	8.7	6.0	2.7
Professionals and exec	4.7	8.2	27.2	20.1	8.4	4.7	3.6
Self-employed non-prof	7.2	10.2	16.2	17.0	6.8	3.4	3.4
p χ2***	<0.001	<0.001	<0.001	<0.001	0.008	0.053	0.013
NYK
Science	7.5	9.2	25.7	21.6	8.9	6.0	2.9
Healthcare	8.1	12.7	25.6	22.5	11.0	6.2	4.8
Administration	9.2	10.7	25.4	21.3	8.4	5.2	3.2
Agriculture	10.6	11.6	20.2	18.5	9.2	4.8	4.5
Mining	13.1	15.9	18.6	21.4	4.8	2.1	2.8
Transportation	9.1	13.3	22.4	23.2	8.3	5.8	2.6
Manufacturing	10.2	14.8	21.7	21.7	9.3	5.2	4.1
Service	10.7	13.2	22.9	24.2	10.2	5.1	5.1
p χ2***	0.041	<0.001	0.014	0.157	0.042	0.364	0.024
SSYK
Managers	4.0	7.5	23.6	23.6	5.2	3.4	1.7
Occupations req. advanced education	6.8	8.8	26.8	20.1	9.1	5.9	3.2
Occupations req. higher education	7.9	9.0	25.8	19.1	8.6	5.9	2.7
Administration	10.0	10.6	24.5	22.0	8.0	4.4	3.6
Service	9.1	13.5	25.0	23.9	10.6	6.1	4.5
Agriculture	10.5	12.2	20.3	19.3	9.8	5.1	4.7
Building	9.4	13.8	21.5	22.7	9.0	5.0	4.0
Manufacturing	11.2	16.3	20.6	20.7	8.9	5.0	3.9
Elementary	14.1	16.8	24.4	26.5	10.9	5.7	5.3
p χ2***	<0.001	<0.001	0.002	0.001	0.118	0.557	0.125
Occupational exposure
No VGDF	7.0	9.2	23.3	19.1	7.7	4.6	3.1
VGDF	13.7	18.6	25.3	27.2	12.4	7.1	5.3
p χ2****	<0.001	<0.001	0.031	<0.001	<0.001	<0.001	<0.001

*comparing age-groups.

**comparing sex.

***comparing all SSYK/NYK/SEI groups respectively.

****comparing VGDF to No VGDF.