Table 3.

Bland-Altman plots biases, SD and 95% CI of the biases, and upper and lower agreement limits for PSG and equivalent EMFIT QS.

Variable	Bias ± SD	95% CI of the Bias	Lower Agreement Limit	Upper Agreement Limit
Avg HR	1.79 ± 8.98	−3.8, 7.4	−15.53	19.11
Min HR	4.9 ± 12.96	−3.1, 12.9	−20.1	29.91
Max HR	−23.22 ± 26.3	−39.5, −6.9	−73.96	27.52
TST	−177.5 ± 119.4	−251.5, −103.5	−407.9	52.96
SOL	5.62 ± 46.39	−23.1, 34.4	−83.92	95.16
WASO	44.74 ± 68.81	2.1, 87.4	−88.06	177.55
Light sleep	−94.2 ± 90.4	−150.2, −38.2	−268.67	−80.28
Deep sleep	−8.3 ± 39	−32.5, 15.9	−83.61	66.98
REM	−74.95 ± 40.87	−100.3, −49.6	−153.83	3.92

Avg = average, CI = confidence interval, HR = heart rate, Max = maximum, Min = minimum, QS = quantified sleep, REM = rapid eye movement, SD = standard deviation, SOL = sleep onset latency, TST = total sleep time, WASO = wake after sleep onset.