Table 2:
Follow-up Data (n = 22).
| Follow-up | Change from | |||
|---|---|---|---|---|
| Data | Baseline | |||
| M (SD) | M (SD) | |||
| Sleep onset latency (minutes) | ||||
| IC Group | 50.6 | (60.2) | 4.44 | (35.3) |
| CBTI Group | 22.3 | (14.4) | 40.0 | (35.9) |
| t = 2.3; p < .05; d = 0.9 | ||||
| Total sleep time (minutes) | ||||
| IC Group | 403.9 (98.8) | 52.8 | (53.6) | |
| CBTI Group | 398.4 (62.7) | 75.9 | (95.3) | |
| t = 0.8; p = .51 | ||||
| IC Group | 8.4 | (5.1) | 1.11 (5.1) | |
| CBTI Group | 4.8 | (2.7) | 5.8 | (4.3) |
| t = 2.1; p < .05; d = 0.9 | ||||
| ESS Total | ||||
| IC Group | 7.1 | (3.3) | 0.22 (2.2) | |
| CBTI Group | 4.6 | (3.7) | 2.5 | (3.3) |
| t = − 1.8; p = .06 | ||||
| BAI Total | ||||
| IC Group | 8.7 | (8.8) | − 0.1 (3.9) | |
| CBTI Group | 7.2 | (5.8) | 3.8 | (4.7) |
| t = 2.6; p < .05; d = 0.8 | ||||
Abbreviations: IC: Information-Control; CBTI: Cognitive Behavior Therapy for Insomnia; M: Mean; SD: Standard deviation; ISI: Insomnia Severity Index; BAI: Beck Anxiety Inventory; T: Independent Samples T-Test; d = Cohen’s d.