Table 2.
Descriptive Statistics and Bivariate Correlations (N = 60)
| Measure | 1. | 2. | 3. | 4. | 5. | 6. | 7. | 8. | 9. | 10. |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. ISI | -- | |||||||||
| 2. SOL | .38** | -- | ||||||||
| 3. NWAK | .37** | .29* | -- | |||||||
| 4. WASO | .40** | .10 | .47** | -- | ||||||
| 5. Sleep quality | −.51** | −.33* | −.50** | −.32* | -- | |||||
| 6. Sleep timing | .03 | .11 | −.08 | −.13 | −.07 | -- | ||||
| 7. Sleep duration | −.27 | −.09 | −.22 | −.37** | .39** | .05 | -- | |||
| 8. Sleep efficiency | −.45** | −.42** | −.34* | −.61** | .54** | .08 | .49** | -- | ||
| 9. SES | .43** | .41* | .11 | .23 | −.42* | .08 | −.04 | −.08 | -- | |
| 10. PCL | .72** | .15 | .42* | .32 | −.35 | .34 | −.36 | −.27 | .36* | -- |
|
| ||||||||||
| M | 10.46 | 21.35 | 1.88 | 23.54 | 3.41 | 3.86 | 420.93 | 79.95 | 66.68 | 28.03 |
| SD | 7.62 | 19.29 | 1.40 | 26.62 | 0.75 | 1.60 | 70.58 | 12.15 | 41.03 | 21.44 |
| Range | 0-27 | 0-95 | 0-6.3 | 0-97.7 | 1.7-4.7 | 0.55-8.0 | 240-533 | 38.3-96.4 | 8-135 | 0-69 |
Note. PCL = PTSD Checklist for DSM-5; SES = Sexual Experiences Survey; ISI = Insomnia Severity Index; MEQ = Morningness-Eveningness Questionnaire; SOL = sleep onset latency; WASO = wake after sleep onset; NWAK = number of awakenings.
SOL, WASO, and sleep duration are reported in minutes. Mid-sleep is reported in decimal format. The PCL and SES were only administered to the PTSD+ and PTSD− groups (n = 39).
*
p < .05
**
p < .01