Table 3.
Sleep domains and sleep interview item frequencies.
| Sleep domain | Sleep Interview Item | All participants | NON | dnLGD | Group differences χ2 p-value | |||
|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |||
| Sleep onset | Total (Endorsing at least one) | 1716 | 40.6% | 1488 | 60.1% | 228 | 60.6% | 0.879 |
| Difficulty going to bed (SBP) | 919 | 32.3% | 796 | 32.0% | 123 | 32.6% | 0.868 | |
| Difficulty falling asleep (SBS) | 1206 | 42.7% | 1043 | 42.1% | 163 | 43.4% | 0.681 | |
| Parent lays down (SBD) | 1343 | 46.8% | 1168 | 47.2% | 175 | 46.4% | 0.833 | |
| Breathing issues | Total (Endorsing at least one) | 190 | 10.6% | 156 | 6.4% | 34 | 9.1% | 0.059 |
| Difficulty breathing at night (BPM) | 166 | 6.9% | 135 | 5.5% | 31 | 8.3% | 0.003 | |
| Sleep apnea dx (BAP) | 73 | 3.3% | 57 | 2.3% | 16 | 4.3% | 0.039 | |
| Nighttime awakenings | Total (Endorsing at least one) | 1173 | 21.7% | 996 | 40.3% | 177 | 46.9% | 0.017 |
| Frequent night awakenings (NAF) | 995 | 37.6% | 839 | 33.9% | 156 | 41.4% | 0.005 | |
| Sleepwalking (NAS) | 390 | 12.5% | 349 | 14.2% | 41 | 10.9% | <.001 | |
| Daytime tiredness | Total (Endorsing at least one) | 837 | 14.8% | 705 | 28.5% | 132 | 35.0% | 0.011 |
| Difficulty waking in morning (DDW) | 269 | 12.3% | 208 | 8.4% | 61 | 16.2% | 0.385 | |
| Daytime tiredness (DDS) | 269 | 12.3% | 208 | 8.4% | 61 | 16.2% | <.001 | |
| Long/Frequent napping (DDN) | 500 | 19.9% | 413 | 16.7% | 87 | 23.1% | <.001 | |