Table 1 Characteristics of all workers in the clean room
From: Prevalence of Dry Eye Syndrome after a Three-Year Exposure to a Clean Room
Characteristics | Number (%) | |
|---|---|---|
Sex | Male | 350 (99.4) |
Female | 2 (0.6) | |
Mean age (years) (mean ± SD) | 31.4 ± 6.1 | |
Current smoker | Yes | 192 |
No | 157 | |
Alcohol consumption over the previous week | Under 70 ml | 165 |
Over 70 ml | 187 | |
Weekly working hours (hours) (mean ± SD) | 59.1 ± 8.7 | |
Age (years) | 20–29 | 161 (45.7) |
30–39 | 150 (42.6) | |
40–49 | 36 (10.2) | |
50–59 | 5 (1.5) | |
Position of employment | Team member (manufacturing) | 317 (90.1) |
Team leader (manufacturing) | 25 (7.1) | |
Clerk (professional) | 2 (0.6) | |
Years worked in the clean room | <1 | 73 (20.7) |
1 | 37 (10.5) | |
2 | 86 (24.4) | |
3 | 23 (6.5) | |
4 | 8 (2.3) | |
>5 | 50 (14.2) |