Table 2.
Mean scores and standard deviations (in brackets) of each group in every demographic and subjective measure.
| Blue-enriched white | Orange | Control | ||
|---|---|---|---|---|
| Age | 19.5 (1.88) | 20.69 (2.59) | 21.46 (3.14) | |
| MEQ score | 51.83 (5.04) | 49.85 (5.62) | 50.82 (5.72) | |
| Mental effort | 54.17 (23.10) | 58.54 (14.97) | 48.36 (21.09) | |
| Midsleep time (hh:mm) | 04:22 (0:37) | 04:25 (0:36) | 04:47 (0:25) | |
| Sleep hours (previous week) | 7.9 (0.7) | 7.5 (0.68) | 7.6 (0.26) | |
| Sleep hours (previous night) | 7.4 (0.62) | 7.5 (0.25) | 7.1 (0.76) | |
| Sleep quality | 8.51 (0.16) | 8.55 (0.29) | 8.56 (0.22) | |
| Visual comfort, global score | 57.83 (22.93) | 54.62 (16.71) | – – | |
| “The light in this room is pleasant” | 56.67 (23.1) | 52.54 (18.68) | – – | |
| “This room is too bright” | 38.42 (27.73) | 36 (21.46) | – – | |
| “I would use this kind of light for reading or working”. | 55.25 (30.02) | 47.31 (30.51) | – – | |
| KSS | Pre | 3.25 (1.87) | 4.31 (1.65) | 3.82 (1.4) |
| Post | 6.67 (1.78) | 6.54 (1.71) | 7.09 (1.22) | |
| Mood state | Pre | 6.75 (1.49) | 6.82 (0.75) | 6.62 (1.5) |
| Post | 5.92 (1.6) | 6 (1.35) | 5.636 (1.75) | |