Table 2.
Polysomnographic parameters across study subgroups
| 1. None (n = 208) | 2. OSA (n = 115) | 3. ADHD (n = 54) | 4. ADHD+OSA (n = 44) | 1 vs. 2 | 1 vs. 3 | 1 vs. 4 | 2 vs. 4 | 3 vs. 4 | |
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Sleep continuity | |||||||||
| Sleep onset latency (min) | 26.3 ± 1.7 | 22.8 ± 2.3 | 23.2 ± 3.3 | 37.6 ± 3.6 | .248 | .406 | .007* | .001* | .004* |
| Awakenings (#) | 35.4 ± 0.8 | 38.3 ± 1.1 | 33.9 ± 1.6 | 38.6 ± 1.8 | .058* | .409 | .124 | .887 | .057* |
| Wake after sleep onset (min) | 69.6 ± 3.0 | 67.6 ± 4.1 | 66.1 ± 5.9 | 77.2 ± 6.5 | .708 | .601 | .308 | .209 | .213 |
| Total sleep time (min) | 446.8 ± 3.9 | 450.9 ± 5.3 | 452.6 ± 7.5 | 428.1 ± 8.4 | .556 | .496 | .049* | .020* | .031* |
| Sleep efficiency (%) | 82.5 ± 0.7 | 83.5 ± 0.9 | 83.7 ± 1.3 | 79.1 ± 1.5 | .438 | .435 | .050* | .014* | .026* |
| Sleep architecture | |||||||||
| Stage 1 (%) | 0.9±.1 | 0.8±.1 | 1.0 ± 0.2 | 1.5 ± 0.2 | .430 | .770 | .018* | .004* | .078 |
| Stage 2 (%) | 53.4 ± 0.6 | 54.4 ± 0.8 | 51.5 ± 1.2 | 53.4 ± 1.3 | .366 | .178 | .970 | .544 | .296 |
| Stage 3 (%) | 27.2 ± 0.5 | 25.8 ± 0.8 | 28.2 ± 1.1 | 27.2 ± 1.2 | .166 | .461 | .984 | .334 | .568 |
| Stage R (%) | 18.3 ± 0.3 | 18.8 ± 0.4 | 19.1 ± 0.6 | 17.6 ± 0.7 | .384 | .279 | .434 | .168 | .142 |
| Sleep disordered breathing | |||||||||
| AHI (events/hr) | 1.0 ± 0.3 | 5.2 ± 0.5 | 1.1 ± 0.7 | 5.5 ± 0.7 | <.001* | .935 | <.001* | .708 | <.001* |
| SpO2 | 91.7 ± 0.3 | 91.1 ± 0.5 | 91.3 ± 0.7 | 91.2 ± 0.7 | .372 | .661 | .606 | .894 | .918 |
| Periodic limb movements | |||||||||
| PLMI (events/hr) | 3.3 ± 0.4 | 3.8 ± 0.5 | 6.0 ± 0.8 | 4.0 ± 0.9 | .486 | .003* | .465 | .830 | .109 |
| PLMS (percent) | 20.8% | 22.3% | 40.7% | 27.2% | .772 | .003* | .380 | .517 | .124 |
Data are mean ± SEM adjusted for covariates. p-Values are post-hoc comparisons from multivariable-adjusted linear models. AHI, apnea/hypopnea index; PLMI, periodic limb movement index; PLMS, abnormal periodic limb movement index.
*
p < .05.