Descriptive characteristics of the swimming pool employees
| Total | Male | Female | |
| Sex | 624 (100) | 240 (38) | 384 (62) |
| Smoker | 143 (23) | 60 (25) | 83 (22) |
| Ex-smoker | 153 (25) | 53 (22) | 100 (26) |
| Age yrs | 40.5±11.6 (16–67) | 40.2±12.4 (16–64) | 40.7±11.0 (17–67) |
| Years working at the pool | 9.8±8.7 (0.10–36.1) | 11.1±10.4 (0.10–36.1) | 9.0±7.4 (0.10–32.7) |
| Time spent working per week | |||
| <12 h | 76 (12) | 20 (8) | 56 (15) |
| 12–19 h | 117 (19) | 18 (8) | 99 (26) |
| 20–32 h | 182 (29) | 28 (12) | 154 (41) |
| 33–40 h | 215 (35) | 150 (63) | 65 (17) |
| >40 h | 29 (5) | 24 (10) | 5 (1) |
| Job description | |||
| Pool attendant | 33 (5) | 17 (7) | 16 (4) |
| Swimming instructor | 121 (19) | 24 (10) | 97 (25) |
| Combination of attendant/instructor | 142 (23) | 49 (20) | 93 (24) |
| Cleaner | 18 (3) | 12 (5) | 6 (2) |
| Technician | 27 (4) | 25 (10) | 2 (1) |
| Reception/pay desk | 41 (7) | 0 | 41 (11) |
| Catering employee | 23 (4) | 5 (2) | 20 (5) |
| Combination reception/catering | 16 (3) | 2 (1) | 12 (3) |
| Manager/mainly office work | 60 (10) | 37 (15) | 23 (6) |
| Team leader | 30 (5) | 19 (8) | 11 (3) |
| Combination of other functions | 112 (18) | 50 (21) | 62 (16) |
Data are presented as n (%) or mean±sd (minimum–maximum value).