TABLE 2.

Phase 2 Sleep Study Parameters, by McGill Oximetry Score

Oximetry ScoreP Value
1 (n = 69)2 (n = 38)3 (n = 23)4 (n = 25)
AHI (n/h)
 Mean4.112.613.339.9<.001*
 95% CI3.0–5.19.1–16.08.5–18.126.5–53.3
Desaturation index (n/h)
 Mean2.48.611.440.0<.001*
 95% CI1.8–2.96.2–10.97.8–15.126.3–53.7
Lowest SaO2 (%)
 Mean89.683.280.959.2<.001*
 95% CI88.6–90.580.9–85.477.7–84.254.3–64.1
Respiratory arousal index (n/h)
 Mean1.96.38.822.0<.001*
 95% CI1.4–2.34.4–8.25.2–12.512.8–31.3
Major intervention for respiratory compromise (n [%])2 (3%)2 (5%)2 (9%)5 (20%)<.04
  • CI indicates confidence interval.

  • * Kruskall-Wallis analysis of variance with posthoc analyses using Dunnett’s C test demonstrated significant differences among results of all measures between scores 1, 2/3, and 4.

  • Fisher’s exact test.