Table 2 Summary of the continuous characteristics of the workers
From: Experience and limited lighting may affect sleepiness of tunnel workers
Variable | Mean | SD |
|---|---|---|
Age (years) | 42,43 | 8,55 |
Shift years | 13,7 | 7,75 |
Height (cm) | 174,69 | 5,43 |
Weight (kg) | 83,05 | 11,99 |
BMI (kg/m2) | 27,23 | 3,88 |