Table 3.
Upper airway stimulation therapy efficacy for obstructive sleep apnea metrics.
| Characteristic | n | Overall (n = 274) | OSAa (n = 126) | COMISA (n = 148) | P a |
|---|---|---|---|---|---|
| ESS preop | 180 | 9.9 (5.2) | 10.5 (5.6) | 9.4 (4.9) | .2 |
| Postop change in ESS | 78 | −3.0 (4.8) | −3.3 (5.1) | −2.8 (4.6) | .5 |
| AHI preop | 274 | 33.5 (13.7) | 34.0 (14.0) | 33.1 (13.5) | .6 |
| AHI change | 260 | −17.8 (18.1) | −18.0 (17.4) | −17.6 (18.7) | >.9 |
| ODI preop | 100 | 27.3 (13.6) | 28.8 (13.3) | 25.9 (13.9) | .3 |
| Postop change in ODI | 73 | −12.5 (18.0) | −10.8 (19.1) | −14.4 (16.8) | .8 |
| T88% | 213 | 27.5 (61.9) | 39.3 (84.6) | 17.0 (26.2) | .02 |
| T88% change | 163 | −7.6 (74.8) | −18.8 (93.1) | 4.5 (45.0) | .11 |
Data are presented as mean (standard deviation) unless otherwise indicated. aWilcoxon rank-sum test. All changes in ESS, AHI, ODI and T88% are significant (P < .01) across the entire cohort and OSAa and COMISA subcohorts. AHI = apnea-hypopnea index, COMISA = comorbid insomnia and obstructive sleep apnea, ESS = Epworth Sleepiness Scale, ODI = oxygen desaturation index, OSAa = obstructive sleep apnea alone, postop = postoperatively, preop = preoperatively, SaO2 = oxygen saturation, T88% = minutes below oxygen saturation of 88%.