Table 2 Visual Comfort Scale evaluated morning, afternoon and evening shown as mean percentage for all 4 weeks
Questions for all participants | Static LED-lighting group | Dynamic LED-lighting group | ||||
|---|---|---|---|---|---|---|
6.00 to 12.00 | 12.00 to 18.00 | 18.00 to 24.00 | 6.00 to 12.00 | 12.00 to 18.00 | 18.00 to 24.00 | |
Ceiling light | Mean percentage for 4 weeks | |||||
 1a. Do you use the ceiling light? Percentage, n | 92.3% (12/13) | 92.3% (12/13) | 92.3% (12/13) | 63.2% (12/19) | 68.8% (11/16) | 87.5% (14/16) |
 1b. Are you satisfied with the ceiling light? Percentage, n | 100% (13/13) | 100% (13/13) | 100% (13/13) | 84.2% (16/19) | 100% (16/16) | 66.7% (10/15) |
 1c. Do you experience glare from the ceiling light? Percentage, n | 7.7% (1/13) | 7.7% (1/13) | 15.4% (2/13) | 21.1% (4/19) | 12.5% (2/16) | 6.3% (1/16) |
Bed reading light | Mean percentage for 4 weeks | |||||
 2a. Do you use your bed reading light? Percentage, n | 84.6% (11/13) | 76.9% (10/13) | 100% (13/13) | 63.2% (12/19) | 62.5% (10/16) | 100% (16/16) |
 2b. Are you satisfied with the bed reading light? Percentage, n | 66.7% (8/12) | 33.3% (4/12) | 23.1% (3/13) | 63.2% (12/19) | 80.0% (12/15) | 43.8% (7/16) |
 2c. Do you experience glare from the bed reading light? Percentage, n | 0% (13/13) | 0% (13/13) | 0% (13/13) | 26.3% (5/19) | 0% (0/16) | 6.3% (1/16) |
General satisfaction | Mean percentage for 4 weeks | |||||
 3a. Are you, in general, satisfied with the color of the lighting in your bedroom? Percentage, n | 100% (13/13) | 100% (13/13) | 100% (13/13) | 100% (19/19) | 93.8% (15/16) | 68.8% (11/16) |
 3b. Are you, in general, satisfied with the intensity of the light? Percentage, n | 76.9% (10/13) | 46.2% (6/13) | 38.5% (5/13) | 63.2% (12/19) | 87.5% (14/16) | 37.5% (6/16) |
 3c. Are you, in general, satisfied with the lighting in your room? Percentage, n | 92.3% (12/13) | 61.5% (8/13) | 61.5% (8/13) | 84.2% (16/19) | 93.8% (15/16) | 56.3% (9/16) |
 3d. Do you experience the lighting as homely and comforting? Percentage, n | 61.5% (8/13) | 61.5% (8/13) | 61.5% (8/13) | 38.9% (7/18) | 60.0% (9/15) | 73.3% (11/15) |
Supplementary questions for participants in the dynamic LED-lighting group only | Mean percentage for 4 weeks | |||||
 4a. Are you satisfied with the light coming from the light panel that is built into the side of the window? Percentage, n | – | – | – | 77.8% (14/18) | 86.7% (13/15) | 81.8% (9/11) |
 4b. Do you experience glare from the light panel built into the side of the window? Percentage, n | – | – | – | 16.7% (3/18) | 0% (0/15) | 9.1% (1/11) |