Table 1.
Characteristics of nail salons
| Characteristics | Mean ± SD |
|---|---|
| Salons | |
| Number of workers (n = 30) | 4.77 ± 3.31 |
| Number of customers (n = 30) | 11.1 ± 9.52 |
| Number of customers serviced by sampler workers (n = 42) | 2.85 ± 2.11 |
| Sampling time, h (n = 42) (Mean (range)) | 8.28 (4.2‐10.8) |
| Temperature oC (n = 30) | 33.02 ± 14.11 |
| Relative humidity, percentage (n = 30) | 64.32 ± 33.80 |
| Air velocity, m/s (n = 30) | 0.37 ± 0.15 |
| Volume, m3 (n = 15) | 119.58 ± 70.43 |
| CO2 exposure, ppm (n = 30) | 940.29 ± 504.73 |
Abbreviation: SD, Standard deviation; n = 15 (number of salons); n = 42 (number of samplers); n = 30 (frequency of measurement of the characteristics) (15 salons ×2 times).