Table 3.

HFLM-related measures (N = 37)

	M ± SE	Range
Number of HFLM sequences per subject per night	26.5 ± 5.0	2–111
Total number of individual HFLM per subject per night	797.7 ± 330.9	15–9768
Duration of HFLM sequence (sec)	17.6 ± 1.1	1.5–367.8
Rate of HFLM (Hz)	1.6 ± 0.0	0.4–3.7
% of total time with HFLM/duration of TIB	1.8 ± 0.6	0.1–17.0
HFLM index (/hr TIB)	107.7 ± 42.4	2.0–1078.3

TIB, time in bed; HFLM index was derived by dividing the total number of individual HFLM by the time in bed (in hours).