Table 2.
Mean level comparisons of sleep characteristics in NHIS 2018 sample of internet users vs. Luc.id April 2020 online nationally representative sample.
| NHIS 2018 |
Luc.id 2020 |
||||
|---|---|---|---|---|---|
| M (SE) n | M (SE) n | Mdiff (99% CI) | d (99% CI) | F (df) | |
| Sleep duration | 7.01 (.01) 19,369 | 6.96 (.04) 2059 | −0.05 (−0.17 to 0.09) | −0.02 (−0.06 to 0.02) | 1.17 (1, 21,415) |
| Days with difficulties falling asleep | 1.42 (.02) 19,381 | 2.55 (.07) 2048 | 1.13 (0.93–1.32) | 0.35 (0.32–0.39) | 230.92 (1, 21,416) |
| Days with difficulties staying asleep | 1.90 (.02) 19,373 | 2.51 (.08) 2054 | 0.62 (0.39–0.84) | 0.17 (0.13–0.21) | 52.18 (1, 21,414) |
| Days feeling not rested | 2.85 (.02) 19,333 | 3.61 (.08) 2057 | 0.76 (0.55–0.93) | 0.21 (0.17–0.24) | 80.03 (1, 21,377) |
Note. Positive Mdiff values reflect increases in variable from 2018 to 2020. d = Cohen's d adjusted for uneven group sample sizes.