| No Power | Low Power | Medium Power | High Power | ||||
---|---|---|---|---|---|---|---|---|
 | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
Comfort | 3.75 | 0.46 | 3.75 | 0.46 | 3.63 | 0.52 | 3.63 | 0.52 |
Comfort-P | 2.69 | 1.28 | 3.13 | 0.99 | 3.50 | 0.76 | 3.38 | 0.74 |
Safety | 4.00 | 0.00 | 4.00 | 0.00 | 3.88 | 0.35 | 3.75 | 0.71 |
Safety-P | 3.25 | 1.16 | 3.63 | 0.74 | 3.63 | 0.74 | 3.38 | 0.92 |
QOM | 4.00 | 0.00 | 3.75 | 0.46 | 3.38 | 0.74 | 3.38 | 0.92 |
QOM-P | 3.75 | 0.71 | 3.88 | 0.35 | 3.19 | 0.84 | 3.06 | 0.78 |