The Effect of Work Characteristics on Dermatologic Symptoms in Hairdressers

Table 6 Odds ratios of dermatologic symptoms according to exposure to hairdressing chemicals, training status and main tasks (n = 1,054)

Variable*	Crude	95% CI	Model I	95% CI^†	Model II	95% CI^‡
Exposure to chemicals
No	1.00		1.00		1.00
Yes	0.82	0.55 - 1.21	0.91	0.56 - 1.47	0.89	0.53 - 1.49
Training status
Master	1.00		1.00		1.00
Designer	1.62	1.10 - 2.38	1.31	0.77 - 2.22	1.22	0.68 - 2.19
Staff	2.69	1.82 - 3.96	2.83	1.47 - 5.43	2.70	1.32 - 5.51
Main task
Cutting	1.00		1.00		1.00
Permanent wave	0.97	0.62 - 1.52	0.93	0.57 - 1.51	0.89	0.53 - 1.49
Dyeing/tinting	2.16	1.03 - 4.52	1.00	0.36 - 2.81	1.08	0.38 - 3.07
Washing	2.36	1.64 - 3.39	2.14	1.32 - 3.47	2.03	1.22 - 3.37
Drying	0.49	0.11 - 2.13	0.45	0.10 - 2.02	0.45	0.10 - 2.03

^*The total of each variable is not always 1,054 due to missing values.
^†Odds ratio and 95% confidence intervals estimated using logistic regression model adjusted for age, gender, marital status, educational level, smoking status, weekly alcohol consumption, amount of regular exercise per week, perceived state of health.
^‡Odds ratio and 95% confidence intervals estimated using logistic regression model adjusted for age, gender, marital status, educational level, smoking status, weekly alcohol consumption, amount of regular exercise per week, perceived state of health, business type, exposure to hairdressing chemicals, personal protective equipment.

ISSN: 2052-4374