Table 2.

Sleep measures pre and post DBS

	PreOperative Testing (T1)	Postoperative Testing (T2)	P value
Stop Bang	2.4 (0.89)	2.6 (1.14)	0.32
Epworth Sleep Scale	10.6 (4.51)	11 (4.74)	0.85
Insomnia Severity Index	14.4 (7.02)	9 (2.55)	0.07
Parkinson’s Disease Sleep Scale	90.24 (20.44)	106.42 (17.40)	0.14
Restless Legs Syndrome Severity Scale	9.8 (13.97)	3.4 (4.67)	--
Total Recorded Time (min)	452.20 (64.60)	426.20 (51.98)	0.35
Apnea Hypopnea Index	2.26 (0.73)	2.32 (1.26)	0.79
Total Sleep Time (min)	274.80 (166.14)	311.60 (89.97)	0.69
Sleep Efficiency (%)	59.2% (32.31)	72.6% (14.57)	0.27
WASO (min)	114.6 (77.84)	79.6 (48.34)	0.23
Sleep Latency (min)	60 (76.17)	28.4 (39.05)	0.23
REM latency (min)	223 (90.20)	95.5 (13.70)	0.11
Stage N1 (%)	33.5% (34.47)	12.66% (8.22)	0.14
Stage N2 (%)	59.3% (27.86)	78.08 (8.29)	0.14
Stage N3 (%)	4.14% (6.55)	0	0.18
REM (%)	4.56% (4.60)	9.26% (11.13)	0.5
Stage N1 (min)	51.6 (23.32)	36.4 (16.20)	0.14
Stage N2 (min)	196.6 (164.94)	247.6 (91.2)	0.35
Stage N3 (min)	13.2 (23.39)	0	0.18
REM (min)	14 (14.54)	28.6 (34.83)	0.35
PLM Index	32 (39.13)	6.82 (9.77)	0.27
Arousal Index	37 (33.01)	14 (17.82)	0.35

Legend: T1=Time 1; T2= Time 2; WASO= Wake After Sleep Onset; PLM=Periodic Limb Movement. Values correspond to means with standard deviation in parentheses. The Restless Legs Syndrome Severity Scale did not have a p value because sample size was too small (n=2).