Table 5.
Odds ratios and 95% confidence intervals to indicate how improvements in sleep metrics from Pod OFF to Pod ON affect responses to perceptual questions.
| Variable | Odds Ratio | SE | 95% CI | z-Value | p-Value |
|---|---|---|---|---|---|
| How would you rate the calmness of your sleep last night? | |||||
| Deep Sleep | 1.061 | 0.204 | (0.711, 1.583) | 0.291 | 0.771 |
| REM Sleep | 1.178 | 0.200 | (0.796, 1.744) | 0.818 | 0.413 |
| Light Sleep | 1.164 | 0.203 | (0.781, 1.732) | 0.747 | 0.455 |
| Wake | 1.694 | 0.216 | (1.109, 2.586) | 2.441 | 0.015 |
| Total Sleep Time | 1.297 | 0.220 | (0.843, 1.996) | 1.183 | 0.237 |
| Number of Awakenings | 1.037 | 0.208 | (0.690, 1.555) | 0.169 | 0.866 |
| REM Sleep Onset | 0.924 | 0.205 | (0.617, 1.382) | −0.169 | 0.699 |
| Deep Sleep Onset | 0.942 | 0.222 | (0.610, 1.457) | −0.267 | 0.790 |
| Sleep Efficiency | 1.358 | 0.129 | (1.050, 1.750) | 2.365 | 0.018 |
| How easy was it to fall asleep last night? | |||||
| Deep Sleep | 0.887 | 0.223 | (0.573, 1.375) | −0.535 | 0.592 |
| REM Sleep | 1.434 | 0.221 | (0.930, 2.212) | 1.631 | 0.103 |
| Light Sleep | 0.995 | 0.221 | (0.645, 1.535) | −0.023 | 0.981 |
| Wake | 2.027 | 0.264 | (1.208, 3.400) | −2.676 | 0.007 |
| Total Sleep Time | 1.248 | 0.702 | (0.315, 4.941) | 0.316 | 0.752 |
| Number of Awakenings | 1.438 | 0.234 | (0.908, 2.276) | 1.549 | 0.121 |
| Sleep Onset | 1.246 | 0.232 | (0.791, 1.962) | 0.950 | 0.342 |
| REM Sleep Onset | 0.491 | 0.225 | (0.316, 0.763) | −3.160 | 0.002 |
| Deep Sleep Onset | 0.815 | 0.240 | (0.509, 1.303) | −0.855 | 0.393 |
| Sleep Efficiency | 1.557 | 0.136 | (1.194, 2.030) | 3.267 | 0.001 |
| How easy was it to wake up this morning? | |||||
| Deep Sleep | 0.842 | 0.206 | (0.562, 1.262) | −0.832 | 0.406 |
| REM Sleep | 1.275 | 0.200 | (0.863, 1.885) | 1.219 | 0.223 |
| Light Sleep | 1.208 | 0.205 | (0.809, 1.804) | 0.925 | 0.355 |
| Wake | 1.247 | 0.220 | (0.521, 1.236) | 1.000 | 0.317 |
| Total Sleep Time | 1.558 | 0.216 | (1.020, 2.380) | 2.050 | 0.040 |
| Number of Awakenings | 1.158 | 0.211 | (0.766, 1.750) | 0.695 | 0.487 |
| REM Sleep Onset | 0.656 | 0.206 | (0.438, 0.982) | −2.048 | 0.041 |
| Deep Sleep Onset | 1.083 | 0.222 | (0.701, 1.674) | 0.360 | 0.719 |
| Sleep Efficiency | 1.173 | 0.132 | (0.906, 1.521) | 1.210 | 0.226 |
| How refreshed do you feel after waking? | |||||
| Deep Sleep | 1.177 | 0.214 | (0.761, 1.788) | 0.761 | 0.447 |
| REM Sleep | 1.436 | 0.205 | (0.960, 2.149) | 1.762 | 0.078 |
| Light Sleep | 1.434 | 0.208 | (0.953, 2.158) | 1.730 | 0.084 |
| Wake | 1.578 | 0.238 | (0.990, 2.514) | 1.917 | 0.055 |
| Total Sleep Time | 1.561 | 0.226 | (1.002, 2.433) | 1.968 | 0.049 |
| Number of Awakenings | 0.898 | 0.217 | (0.587, 1.375) | −0.492 | 0.623 |
| REM Sleep Onset | 0.771 | 0.213 | (0.508, 1.171) | −1.219 | 0.223 |
| Deep Sleep Onset | 1.356 | 0.244 | (0.841, 2.187) | 1.249 | 0.212 |
| Sleep Efficiency | 1.442 | 0.366 | (1.116, 1.865) | 2.796 | 0.005 |
| How satisfied are you with your sleep last night? | |||||
| Deep Sleep | 1.129 | 0.204 | (0.757, 1.683) | 0.595 | 0.552 |
| REM Sleep | 1.512 | 0.212 | (1.022, 2.235) | 2.071 | 0.038 |
| Light Sleep | 1.28 | 0.201 | (0.832, 1.899) | 1.225 | 0.220 |
| Wake | 1.653 | 0.226 | (1.061, 2.575) | 2.223 | 0.026 |
| Total Sleep Time | 1.722 | 0.213 | (1.135, 2.612) | 2.555 | 0.011 |
| Number of Awakenings | 0.875 | 0.208 | (0.582, 1.317) | −0.639 | 0.523 |
| REM Sleep Onset | 0.846 | 0.206 | (0.564, 1.269) | −0.808 | 0.419 |
| Deep Sleep Onset | 1.381 | 0.233 | (0.875, 2.179) | 1.388 | 0.165 |
| Sleep Efficiency | 1.518 | 0.130 | (1.178, 1.957) | 3.222 | 0.001 |
| On average, throughout the night, what was your thermal sensation? | |||||
| Deep Sleep | 1.083 | 0.149 | (0.809, 1.456) | 0.537 | 0.591 |
| REM Sleep | 0.856 | 0.150 | (0.635, 1.146) | −1.035 | 0.301 |
| Light Sleep | 0.687 | 0.156 | (0.501, 0.927) | −2.400 | 0.016 |
| Wake | 1.038 | 0.149 | (0.775, 1.039) | 0.252 | 0.801 |
| Total Sleep Time | 0.759 | 0.163 | (0.547, 1.041) | −1.693 | 0.091 |
| Number of Awakenings | 1.590 | 0.161 | (1.171, 2.205) | −2.891 | 0.004 |
| REM Sleep Onset | 1.031 | 0.149 | (0.767, 1.385) | 0.201 | 0.841 |
| Deep Sleep Onset | 0.608 | 0.174 | (0.425, 0.845) | −2.854 | 0.004 |
| Sleep Efficiency | 0.922 | 0.101 | (0.756, 1.123) | −0.805 | 0.421 |
| On average, how comfortable were you with your body temperature throughout the night? | |||||
| Deep Sleep | 1.686 | 0.347 | (0.875, 3.458) | 1.507 | 0.132 |
| REM Sleep | 1.556 | 0.344 | (0.810, 3.172) | 1.286 | 0.198 |
| Light Sleep | 2.361 | 0.379 | (1.171, 5.220) | 2.267 | 0.023 |
| Wake | 2.656 | 0.384 | (1.306, 5.920) | 2.547 | 0.011 |
| Total Sleep Time | 2.265 | 0.375 | (1.127, 4.945) | 2.183 | 0.029 |
| Number of Awakenings | 0.643 | 0.344 | (0.315, 1.235) | −1.286 | 0.198 |
| REM Sleep Onset | 0.576 | 0.349 | (0.279, 1.116) | −1.58 | 0.114 |
| Deep Sleep Onset | 1.318 | 0.381 | (0.647, 2.949) | 0.727 | 0.467 |
| Sleep Efficiency | 1.831 | 0.196 | (1.255, 2.713) | 3.084 | 0.002 |
Note: Improvement in sleep is indicated by an increase in minutes from Pod OFF Baseline to Pod ON in deep sleep, REM sleep, light sleep, total sleep time, REM sleep onset, deep sleep onset latency, or sleep efficiency (see Section 2.5 for details). Improvements in the number of awakenings and minutes of wake time were indicated by a decrease in these sleep metrics. Bolded values indicate significance at p < 0.05; SE: standard error; 95% CI: 95% confidence intervals.