Table 2.

Comparison of sleep architecture parameters according to diagnosis of obstructive sleep apnea (on the left) and periodic limb movement disorder (on the right).

Parameter	Raised AHI (N=242; P=59.75%)	Normal AHI (N=163; P=40.45%)	p	High PLMI (N=165; P=40.74%)	Normal PLMI (N=240; P=59.51%)	p
	Mean (SD)	Mean (SD)		Mean (SD)	Mean (SD)
TIB  (in minutes)	418.29 (45.16)	421.20 (50.69)	0.876	413.34 (49.00)	418.05 (44.83)	0.435
TSP (in minutes)	386.01 (66.10)	378.26 (73.14)	0.151	374.23 (71.64)	384.72 (58.99)	0.274
TST (in minutes)	325.37 (80.28)	332.73 (91.82)	0.355	313.96 (84.21)	338.21 (84.44)	0.002
SE (in %)	77.44 (16.92)	78.51 (18.81)	0.101	74.86 (18.52)	79.94 (16.82)	0.001
SOL (in minutes)	26.42 (28.25)	35.67 (42.64)	0.118	33.00 (40.97)	28.19 (30.18)	0.338
REM onset Latency (in minutes)	178.63 (92.07)	163.46 (81.91)	0.213	180.56 (83.58)	167.09 (91.09)	0.055
WASO (in minutes)	65.90 (57.54)	52.78 (56.22)	<0.001	69.97 (61.50)	54.19 (53.42)	0.001
Number of awakenings	25.58 (20.25)	18.21 (13.17)	0.001	21.92 (18.22)	25.08 (18.12)	<0.001
Number of REM periods	5.61 (5.11)	4.93 (4.09)	0.542	5.15 (5.01)	5.47 (4.55)	0.223
Total arousal index	21.82 (18.51)	13.16 (9.83)	<0.001	23.25 (16.84	14.95 (14.79)	<0.001
AHI	22.33 (20.57)	1.51 (1.40)	<0.001	16.65 (19.34)	12.09 (18.42)	0.002
PLMI	23.96 (30.72)	19.44 (30.25)	0.012	47.62 (34.24)	4.63 (4.45)	<0.001
Minimal SaO2 (in %)	80.05 (10.40)	89.94 (3.56)	<0.001	84.58 (8.29)	82.65 (11.70)	0.465
HR in NREM Sleep	71.11 (12.33)	70.37 (10.84)	0.949	70.67 (10.96)	70.91 (12.28)	0.851
Sleep stagedistribution (in percent)
Stage 1	14.88 (11.83)	11.12 (9.62)	<0.001	16.11 (13.06)	11.48 (9.16)	<0.001
Stage 2	57.54 (13.62)	55.95 (13.60)	0.153	55.13 (14.36)	58.12 (12.98)	0.067
SWS	15.66 (11.63)	20.24 (12.53)	<0.001	17.07 (12.35)	17.81 (12.10)	0.594
REM	11.92 (7.65)	12.77 (8.18)	0.341	11.71 (8.14)	12.64 (7.67)	0.117

Notes: Mann-Whitney test was used for the analyses. Abbreviations: AHI: Apnea-hypopnea index; PLMI: Periodic limb movement index; N: Count; P: Valid