Table 1 List of features obtained from CPAP logs.
From: Investigation on factors related to poor CPAP adherence using machine learning: a pilot study
Number | Feature name | Unit | Value |
|---|---|---|---|
| Â | Qualitative values obtained from the original CPAP log | ||
1 | Sex | Â | Male/female |
2 | CPAP mode (i.e., pressure control) | Â | Auto/fixed |
| Â | Summaries of quantitative values obtained from CPAP log: usage duration | ||
3 | Percentage of days in a week with more than 4Â h of CPAP usage | % | Â |
4 | Percentage of days in a week with CPAP usage | % | Â |
5 | Percentage of days in a week without CPAP usage | % | Â |
6 | Average daily usage duration in a week | min | Â |
7 | Standard deviation of daily usage duration in a week | min | Â |
8 | Total usage duration in a week | min | Â |
| Â | Summaries of quantitative values obtained from CPAP log:Â air leakage | ||
9 | Average daily air leakage from CPAP mask in a week | L/sec | Â |
10 | Standard deviation of daily air leakage from CPAP mask in a week | L/sec | Â |
| Â | Summaries of quantitative values obtained from CPAP log:Â AI | ||
11 | Average daily AI in a week | events/h | Â |
12 | Standard deviation of daily AI in a week | events/h | Â |
| Â | Summaries of quantitative values obtained from CPAP log:Â AHI | ||
13 | Average daily AHI in a week | events/h | Â |
14 | Standard deviation of daily AHI in a week | events/h | Â |
| Â | Summaries of quantitative values obtained from CPAP log:Â average mask pressure (from auto mode only) | ||
15 | Average of daily average mask pressure in a week | cmH2O | Â |
16 | Standard deviation of daily average mask pressure in a week | cmH2O | Â |
| Â | Additional qualitative values | ||
17 | Severity of OSAS18 | Â | Normal/Mild/Moderate/Severe |
18 | Presence of OSAS19 |  | Normal (AI < 5)/OSAS (5 ≤ AI) |
