Table 2.
Comparison of the neurocognitive function during the daytime work and after the night shift work of firefighters.
| Domain | Mean ± SD (N = 352) | p-Value | |
|---|---|---|---|
| During Day Work | After Night Work | ||
| Composite memory | 90.6 ± 19.1 | 84.7 ± 19.7 | <0.001 |
| Verbal memory | 87.7 ± 20.0 | 81.3 ± 21.9 | <0.001 |
| Visual memory | 97.1 ± 16.3 | 94.0 ± 16.6 | 0.001 |
| Complex attention | 97.8 ± 18.2 | 93.3 ± 32.4 | 0.007 |
| Psychomotor speed | 112.4 ± 15.4 | 110.1 ± 15.2 | <0.001 |
| Motor speed | 111.0 ± 15.1 | 108.7 ± 14.1 | <0.001 |
| Processing speed | 107.6 ± 15.7 | 107.4 ± 17.1 | 0.860 |
| Reaction time | 92.4 ± 15.0 | 92.7 ± 17.1 | 0.711 |
| Cognitive flexibility | 106.2 ± 16.9 | 105.8 ± 19.1 | 0.671 |
| Executive functioning | 107.0 ± 16.5 | 107.2 ± 18.5 | 0.799 |
| Neurocognitive index | 99.9 ± 11.6 | 97.4 ± 13.4 | <0.001 |
All subgroups were analyzed by paired t-test.