Table 4.
Mean Values for the Sleep Quality Interview Across the Insomnia Group and the Normal Sleeper Group
| How Important is: | Insomnia (N = 24) | Normal Sleeper (N = 28) | |
|---|---|---|---|
| Sleep Variables: Diagnosis Main Effect, F = 3.18, ns. | |||
| How well you slept | 4.46 (0.64) | 3.82 (0.86) | |
| How satisfied you are with your sleep | 4.28 (0.68) | 3.54 (0.96) | |
| Whether you get enough sleep | 4.24 (0.97) | 4.18 (0.82) | |
| How easy it is to fall asleep | 4.18 (0.99) | 3.79 (0.69) | |
| Whether you feel calm and relaxed as you're trying to get to sleep | 4.16 (0.9) | 3.64 (0.91) | |
| Whether you feel anxious, worried or tense as you're trying to get to sleep | 4.16 (0.62) | 3.71 (0.94) | |
| How restless you are during the night | 4.12 (0.73) | 3.39 (1.23) | |
| How deep your sleep feels | 4.04 (0.89) | 3.96 (0.84) | |
| Whether you feel tense or physiologically aroused when you're trying to get to sleep | 4.00 (0.91) | 3.50 (0.96) | |
| Early waking too early and not being able to get back to sleep | 3.92 (1.14) | 2.64 (1.03) | |
| The number of hours of sleep you get | 3.72 (1.14) | 3.96 (1.00) | |
| Whether you slept throughout the night | 3.67 (0.82) | 3.46 (0.88) | |
| The length of awakenings during the night | 3.60 (1.29) | 3.29 (1.24) | |
| The time you go to bed | 3.24 (1.20) | 2.96 (1.00) | |
| The number of times you wake up during the night | 3.16 (1.25) | 3.43 (1.00) | |
| Whether you have been woken by an external factor | 3.08 (1.08) | 2.61 (1.23) | |
| How disturbing your dreams are | 3.08 (1.32) | 3.00 (1.39) | |
| How much you moved during sleep | 2.54 (1.29) | 2.00 (1.05) | |
| The amount you dream | 2.38 (1.29) | 1.96 (1.07) | |
| On Waking Variables: Diagnosis main effect, F = 2.76, P < 0.05. | t(51) | ||
| How rested you feel | 4.70 (0.68) | 4.14 (0.89) | 210.50a* |
| How restored you feel | 4.52 (0.65) | 4.11 (0.92) | 262.50a |
| How tired you feel | 4.44 (0.77) | 3.96 (1.00) | 251.50a |
| How refreshed you feel | 4.32 (0.80) | 4.04 (0.92) | 1.19 |
| How energetic you feel | 4.04 (0.93) | 3.75 (1.11) | 1.02 |
| How you feel about the day ahead | 3.92 (1.04) | 3.46 (1.07) | 1.57 |
| How you feel immediately | 3.88 (0.90) | 3.11 (1.13) | 2.67* |
| How easy you find it to wake up | 3.88 (1.01) | 3.96 (0.96) | −0.31 |
| Body sensations (e.g., heavy eyes, tired shoulders) | 3.72 (0.98) | 3.71 (1.05) | 0.02 |
| Whether you feel anxious, worried, tense | 3.68 (1.11) | 3.43 (1.07) | 0.84 |
| How alert you feel | 3.68 (1.03) | 3.64 (0.99) | 0.13 |
| How clear-headed you feel | 3.64 (0.99) | 3.79 (0.96) | −0.54 |
| Whether you feel calm and relaxed | 3.60 (1.12) | 3.36 (0.91) | 0.87 |
| Whether you feel tense, on edge or physiologically aroused | 3.38 (1.32) | 3.57 (0.92) | −0.62 |
| Whether it is dark or light | 3.17 (1.2) | 2.71 (1.15) | 262.50a |
| Whether you have woken up naturally | 2.92 (1.29) | 3.32 (1.09) | −1.23 |
| Your sense of balance and co-ordination | 2.60 (1.19) | 2.82 (1.22) | −0.67 |
| Daytime Variables Diagnosis Main Effect, F = 1.58, ns. | |||
| How alert you feel | 4.48 (0.59) | 4.25 (0.84) | |
| How tired you feel | 4.44 (0.87) | 4.07 (0.94) | |
| How well you perform | 4.20 (0.65) | 3.57 (1.03) | |
| How energetic you feel | 4.12 (0.60) | 3.89 (0.83) | |
| Body sensations (e.g., shoulders tired) | 3.68 (1.14) | 3.61 (1.10) |
Data are presented as mean values with standard deviations appear in parentheses. Scale for all questions: 1 “Not at all important” to 5 “Very important.” aWhenever variables were not normally distributed, the Mann Whitney U is reported.
*P < 0.01; **P < 0.001.