Table 3.

Self-reported patient assessment of in-laboratory PSG vs a level 3 portable sleep study device at home.

	PSG	Level 3 Device	Mean Difference (95% CI)	P Value
How comfortable did you find the study?	5.9 ± 2.4	7.2 ± 1.7	−1.2 (−2.3 to −0.2)	.018
How convenient did you find the study?	7.0 ± 2.5	8.2 ± 1.1	−1.3 (−2.2 to −0.4)	.008
How closely did your sleep on the study night match your normal sleep pattern at home?	5.1 ± 2.3	7.3 ± 2.1	−2.2 (−3.3 to −1.1)	< .001
How confident were you in the results of the study?	7.5 ± 1.9	7.5 ± 1.7	0.0 (−0.8 to 0.8)	.99

Results from paired visual analog scales (1–10) in a subset of 29 patients. CI = confidence interval, PSG = polysomnography.