Table 2.
Pre- and post-treatment PSG measures in the SGP (n = 18) and NST (n = 12) groups
| Average PSG parameter | SGP group pre-treatment | SGP group post-treatment | SGP group p-value (CI 95%) | NST group pre-treatment | NST group post-treatment | NST group p-value (CI 95%) | Between groups p-value (CI 95%) |
|---|---|---|---|---|---|---|---|
| oAHI (events/hour) | 16.31 | 3.63 | 0.0039* | 7.7 | 4.4 | 0.3 | 0.09 |
| O2 nadir (%) | 86.7 | 87.8 | 0.4991 | 86 | 85 | 0.7 | 0.5 |
| Central apnoea (events/hour) | 1.38 | 1.22 | 0.9 | 1.04 | 1.3 | 0.5 | 0.6 |
| Weight percentile (%) | 40.47 | 58.52 | 0.024** | 45.9 | 67.8 | 0.04** | 0.8 |
*p-value <0.05; PSG = polysomnography; SGP = supraglottoplasty; CI = confidence interval; NST = non-surgical treatment; oAHI = obstructive apnoea-hypopnoea index