Table 2.
Baseline | 4 Week Follow-Up | 8 Week Follow-Up | 12 Week Follow-Up | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
N | M (SD) | N | M (SD) | d | N | M (SD) | d | N | M (SD) | d | ||
STEP-1 (Sleep Education) | ||||||||||||
Insomnia Severity Index | 51 | 17.08 (3.44) | 51 | 11.20 (5.50)*** | 1.18 | 26a | 6.85 (3.87)*** | 1.62 | 23a | 6.09 (3.58)*** | 2.2 | |
POMS-SF | ||||||||||||
Total Mood Disturbance | 45 | 14.76 (17.74) | 45 | 8.00 (16.23)** | 0.50 | |||||||
Anger Hostility | 47 | 2.87 (2.78) | 47 | 2.30 (2.58) | 0.18 | |||||||
Confusion Bewilderment | 54 | 3.63 (3.29) | 47 | 3.15 (3.70)** | 0.41 | |||||||
Depression Dejection | 47 | 2.19 (3.42) | 47 | 1.51 (1.82) | 0.26 | |||||||
Fatigue Inertia | 55 | 9.62 (4.92) | 47 | 6.62 (4.70)*** | 0.66 | |||||||
Tension Anxiety | 55 | 5.40 (4.64) | 47 | 4.45 (3.69)* | 0.31 | |||||||
Vigor Activity | 54 | 9.15 (3.97) | 47 | 9.96 (4.36)* | 0.36 | |||||||
STEP-2 (Group CBT-I) | ||||||||||||
Insomnia Severity Index | 14 | 16.86 (5.14) | 14 | 8.79 (4.58)*** | 2.02 | 14 | 9.5 (3.35)*** | 1.53 | ||||
POMS-SF | ||||||||||||
Total Mood Disturbance | 14 | 15.79 (17.11) | 13 | 5.31 (10.16) | 0.49 | 14 | 7.71(10.59)* | 0.74 | ||||
Anger Hostility | 14 | 2.50 (2.35) | 14 | 2.43 (1.95) | 0.03 | 14 | 2.36 (1.74) | 0.06 | ||||
Confusion Bewilderment | 14 | 3.29 (4.08) | 13 | 1.77 (1.59) | 0.29 | 14 | 2.50 (3.39) | 0.26 | ||||
Depression Dejection | 14 | 2.21 (2.99) | 14 | 1.50 (1.79) | 0.34 | 14 | 0.86 (0.77) | 0.50 | ||||
Fatigue Inertia | 14 | 9.43 (5.71) | 14 | 6.00 (3.64)* | 0.65 | 14 | 6.86 (5.28)* | 0.74 | ||||
Tension Anxiety | 14 | 5.14 (3.01) | 14 | 3.86 (3.09) | 0.53 | 14 | 3.14 (2.35)* | 0.71 | ||||
Vigor Activity | 14 | 6.79 (4.64) | 14 | 8.71 (3.69)* | 0.76 | 14 | 8.00 (4.47) | 0.41 |
p < .05,
p < .01,
p < .001
Paired t tests comparing follow up assessments with baseline assessments.
Only participants remitted at STEP-1 4-week follow-up completed the ISI at 8- and 12-weeks after STEP-1; non-remitted participants were referred to STEP-2.