Table 5.

Sleep parameters by group [Mean (SD)]

Sleep Variables	Low CS (n=17)	High CS (n=21)	p value
PSQI Components
1. Subjective Sleep Quality	0.8 (0.5)	1.5 (0.8)	0.007**
2. Sleep Latency	0.9 (0.9)	1.8 (1.1)	0.01*
3. Sleep Duration	0.5 (0.7)	1.3 (1.2)	0.01*
4. Habitual Sleep Efficiency	2.6 (1.0)	2.0 (1.3)	0.10
5. Sleep Disturbance	1.4 (0.7)	2.0 (0.7)	0.006**
6. Use of Sleep Medications	0.1 (0.3)	1.0 (1.2)	0.007**
7. Daytime Dysfunction	0.9 (0.7)	1.3 (0.9)	0.14
Global Score	7.1 (3.1)	10.9 (4.0)	0.003**
ISI	5.4 (6.1)	12.5 (8.2)	0.005**
Sleep from PDA† (average over 3 months)
Sleep Efficiency (%)	89.6% (6.7)	77.1% (17.7)	0.011*
Wake After Sleep Onset (in minutes)	17.5 (24.3)	35.6 (29.5)	0.057
Sleep Onset Latency (in minutes)	16.8 (12.9)	37.4 (25.1)	0.005**
Sleep Duration (in hours)	7.2 (1.2)	7.9 (3.7)	0.53
From Weekly Calls (average over 3 months)
Sleep Continuity Disturbance	0.9 (.9)	1.9 (1.3)	0.029*
Sleep Duration	6.7 (0.9)	6.2 (1.5)	0.34
From Monthly calls (averaged over 12 months)
Sleep Continuity Disturbance	1.1 (0.9)	2.2 (1.0)	0.006**
Sleep Duration	6.5 (1.2)	5.7 (1.1)	0.068

^*(p<.05),

^**(p<.01).

PSQI: Pittsburgh Sleep Quality Index, ISI: Insomnia Severity Index.

^†Does not include VOC nights.