Trends in CPAP adherence over twenty years of data collection: a flattened curve

Table 1 Studies comparing self-reported vs. machine-documented CPAP compliance

1st author (year)	Outcome	Subjects (N)	Self-report	CPAP device	Absolute difference	Percent difference
Roecklein (2010) [79]	Hours per night at 3 months	28	4.68	2.35	2.33	49.8 %
Kribbs (1993) [83]	Hours per night over time	35	4.9	3.7	1.2	24.5 %
		311			Mean =	35.4 %
					Weighted mean =	32.7 %

ISSN: 1916-0216