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. 2022 Apr 1;10:857553. doi: 10.3389/fpubh.2022.857553

Table 1.

Background characteristics of outdoor workers.

Questionnaire 1
(T = 0 weeks) n = 27
Questionnaire 2
(T = 16 weeks) n = 17
Age (years ± SD) 34 ± 9.7 36 ± 8.8
Sex (males, n, %) 25 (93%) 15 (88%)
Smoking (n, %)
Never 8 (29%) 4 (24%)
Quit 2 (7%) 2 (12%)
Yes 17 (63%) 11 (65%)
packs/day
0.25 1 (4%)
0.5 6 (22%) 4 (24%)
1 9 (33%) 7 (41%)
2 1 (4%)
Skin type (n, %)
I 2 (7%) 1 (6%)
II 2 (7%) 5 (29%)
III 19 (70%) 8 (47%)
IV 4 (15%) 3 (18%)
Country of birth (n, %)
Belgium 1 (4%)
Bosnia and Herzegovina 3 (11%)
Brazil 1 (4%)
Bulgaria 3 (11%) 2 (12%)
Croatia 1 (4%) 1 (6%)
Hungary 1 (4%)
Ireland 5 (19%) 2 (12%)
Lithuania 1 (4%) 1 (6%)
Poland 3 (11%)
Romania 3 (11%) 5 (30%)
Spain 1 (4%)
The Netherlands 1 (4%) 4 (24%)
United Kingdom 3 (11%) 2 (12%)
Job as construction worker
0–1 year 5 (19%) 2 (12%)
2–5 years 9 (33%) 5 (29%)
6–10 years 7 (26%) 1 (6%)
11–20 years 2 (7%) 5 (30%)
>20 years 4 (24%) 3 (18%)
Outdoor on workday (n, %)
0–1 h 5 (19%) 1 (6%)
2–4 h 7 (26%) 5 (29%)
>4 h 15 (56%) 11 (65%)
Work task outdoor
Scaffolding fitter 5 (19%) 1 (6%)
Fiber installation 8 (30%) 2 12%)
Paving 2 (7%) 3 (18%)
Crane operator 2 (7%)
Other 10 (37%) 11 (65%)