Table 5.
Multivariate logistic regression of adherence to PAP therapy.
| Device Type | Adjusted OR (95% CI) | p-Value |
|---|---|---|
| Median Income * | p <0.0001 | |
| Low ($40,834–50,366) | 1.12 (1.08, 1.15) | |
| High ($50,376–65,143) | 1.17 (1.14, 1.21) | |
| Highest ($65,150–223,106) | 1.18 (1.14, 1.21) | |
| Age | 1.01 (1.01, 1.01) | p < 0.0001 |
| Women | 1.01 (1.01, 1.01) | p < 0.0001 |
| African American race | 0.99 (0.99, 0.99) | p < 0.0001 |
| Hispanic ethnicity | 0.99 (0.99, 0.99) | p < 0.0001 |
| Average leak > 45 lpm | 0.78 (0.76, 0.79) | p < 0.0001 |
| Device type ¶ | p < 0.0001 | |
| Bilevel PAP | 0.89 (0.84, 0.92) | |
| AutoPAP | 0.92 (0.89, 0.94) | |
| AutoBilevelPAP | 0.86 (0.83, 0.89) | |
| ASV | 0.64 (0.59, 0.70) | |
| AVAPS | 0.28 (0.22, 0.36) | |
| High altitude elevation (quartile) † | 1.14 (1.07, 1.21) | p < 0.0001 |
| Residual CAI > 5/hour | 0.62 (0.57, 0.66) | p < 0.0001 |
| Residual AHI > 5/hour ‡ | 0.63 (0.62, 0.65) | p < 0.0001 |
| Set-up year ° | p < 0.0001 | |
| Quartile 2 (2011–2012) | 1.44 (1.40, 1.48) | |
| Quartile 3 (2013–2014) | 1.67 (1.63, 1.72) | |
| Quartile 4 (>2015) | 1.96 (1.90, 2.01) |
OR = odds ratio; 95%CI = 95% confidence interval; * reference is Quartile 1 (lowest income quartile; <$40,834); ANOVA p-value < 0.0001; lpm = liters per minute; ¶ referenced against CPAP; automatic devices (autoPAP, auto-bilevel PAP, adaptive servo-ventilation (ASV), adaptive volume averaged pressure support (AVAPS)); † High elevation (step increase in quartile of elevation); CAI = Central Apnea Index; AHI = apnea–hypopnea index. ‡ Considering that AHI was collinear to CAI, this regression was done separately in lieu of CAI. ° Reference year of set-up category is < 2011.