Descriptive data for the hairdressers, consumers with personal hair dye use, and controls
| Descriptive data | Hairdressers (N=295) | Consumers (N=32) | Controls (N=60) | ||||
|---|---|---|---|---|---|---|---|
| Age, mean (SD) | 38 (10) | 44 (8) | 35 (11) | ||||
| Personal use of hair dyes, N (%) | Yes | No | Yes | No | Yes | No | |
| Ever used permanent hair dye | 265 (94) | 18 (6) | 29 (91) | 3 (9) | NA | NA | |
| Regular use of permanent hair dye | 183 (69) | 84 (31) | 15 (60) | 10 (40) | NA | NA | |
| Ever used semi-permanent hair dye | 256 (90) | 27 (10) | 26 (81) | 6 (19) | NA | NA | |
| Regular use of semi-permanent hair dye | 97 (39) | 153 (61) | 7 (28) | 18 (72) | NA | NA | |
| Any use of permanent hair dye recent years | NA | NA | NA | NA | 0 | 60 | |
| Any use of semi-permanent hair dye recent years | NA | NA | NA | NA | 0 | 60 | |
| Working hours, N (%) | Full-time | 174 (74) | |||||
| Part-time | 60 (26) | ||||||
| Treatment | Never | Sometimes | Always | ||||
| Use of gloves, N (%) | Permanent hair dye | 0 (0) | 14 (7) | 198 (93) | |||
| Highlights | 47 (22) | 75 (36) | 89 (42) | ||||
| Semi-permanent hair dye | 6 (3) | 32 (15) | 171 (82) | ||||
| Semi-permanent hair dye (foam) | 66 (33) | 68 (34) | 64 (32) | ||||
| Conditioning with pigment | 95 (48) | 58 (30) | 43 (22) | ||||
| Change of gloves, N (%) | After each work task | 93 (40) | |||||
| After each customer | 81 (35) | ||||||
| Daily | 22 (9) | ||||||
| Once a month | 26 (11) | ||||||
| Less often | 11 (5) | ||||||
| Type of protective gloves N (%) | Vinyl/plastic | 183 (71) | |||||
| Natural rubber latex | 58 (23) | ||||||
| Others | 5 (2) | ||||||
| Unknown | 10 (4) | ||||||
Note that consumers were required to have regular use of permanent or semi-permanent hair dyes, and controls not to have any such use during the past year.
NA, question not included in the questionnaire.