Table 1: Demographic characteristics of hairdressers (case) and control groups.

Variables The Study Groups p- value
Case Control
Mean±SD/N(%) Mean=SD/N(%)
Age (years) 33.16 ± 7.2 32.52=7.5 0.08*
Education Level
Lower than Diploma
Higher than Diploma
239(62.1%)
146(37.9%)
230(59.8%)
155(40.2%)
0.50**
Smoking
Yes
No
45(11.7%)
340(88.3%)
43(11.2%)
342(88.8%)
0.82**
Work Experience 8.72 ± 5.7 - -

*Independent t-test, ** Chi-square test