Title Page
Abstract
Contents
Introduction 12
Methods 24
1. Participants and procedure 24
2. Digital applications 25
1) dSIBT-I application 25
2) dCBT-I application 25
3. Study design 25
4. Data collection 26
1) Sleep diary 26
2) Symptoms rating scales 28
5. Statistical analysis 31
Results 33
Discussion 72
Conclusions 77
References 78
국문 요약 84
Table 1. Four components of Sleep-Index based Treatment for Insomnia 19
Table 2. Demographic and clinical characteristics of both groups at baseline (n=50) 34
Table 3. Demographic and clinical characteristics of both groups at baseline (n=50) 35
Table 4. Linear mixed model for differences in the severity of insomnia at each visit between the two groups (N=50, ITT) 38
Table 5. Linear mixed model for differences in the severity of depression at each visit between the two groups (N=50, ITT) 40
Table 6. Linear mixed model for differences in the severity of anxiety at each visit between the two groups (N=50, ITT) 42
Table 7. Linear mixed model for differences in the severity of dysfunctional beliefs about sleep at each visit between the two groups (N=50, ITT) 44
Table 8. Linear mixed model for differences in the level of psychological well-being at each visit between the two groups (N=50, ITT) 46
Table 9. Linear mixed model for differences in the severity of fatigue at each visit between the two groups (N=50, ITT) 48
Table 10. Linear mixed model for differences in discrepancy between desired time in bed and desired total sleep time (DBST index) at each visit between the two groups (N=50, ITT) 50
Table 11. Linear mixed model for differences in the severity of insomnia at each visit between the two groups (N=41, PP) 54
Table 12. Linear mixed model for differences in the severity of depression at each visit between the two groups (N=41, PP) 56
Table 13. Linear mixed model for differences in the severity of anxiety at each visit between the two groups (N=41, PP) 58
Table 14. Linear mixed model for differences in the severity of dysfunctional beliefs about sleep at each visit between the two groups (N=41, PP) 60
Table 15. Linear mixed model for differences in the level of psychological well-being at each visit between the two groups (N=41, PP) 62
Table 16. Linear mixed model for differences in the severity of fatigue at each visit between the two groups (N=41, PP) 64
Table 17. Linear mixed model for differences in discrepancy between desired time in bed and desired total sleep time (DBST index) at each visit between the two groups (N=41, PP) 66
Table 18. Outcome measures at each visit 69
Table 19. Satisfaction with each application in terms of usability and effectiveness 71
Figure 1. The digital therapeutic application of the Sleep-Index Based Treatment for Insomnia 22
Figure 2. Study overview 27
Figure 3. Flow chart of the study design 32
Figure 4. Changes in insomnia severity between the two groups ateach visit (N=50, ITT) 39
Figure 5. Changes in depression severity between the two groups ateach visit (N=50, ITT) 41
Figure 6. Changes in anxiety severity between the two groups ateach visit (N=50, ITT) 43
Figure 7. Changes in dysfunctional beliefs about sleep between the two groups ateach visit (N=50, ITT) 45
Figure 8. Changes in psychological well-being between the two groups ateach visit (N=50, ITT) 47
Figure 9. Changes in severity of fatigue between the two groups ateach visit (N=50, ITT) 49
Figure 10. Changes in discrepancy between desired time in bed and desired total sleep time (DBST index) between the two groups at each visit (N=50, ITT) 51
Figure 11. Changes in insomnia severity between the two groups ateach visit (N=41, PP) 55
Figure 12. Changes in depression severity between the two groups ateach visit (N=41, PP) 57
Figure 13. Changes in anxiety severity between the two groups ateach visit (N=41, PP) 59
Figure 14. Changes in dysfunctional beliefs about sleep between the two groups at each visit (N=41, PP) 61
Figure 15. Changes in psychological well-being between the two groups at each visit (N=41, PP) 63
Figure 16. Changes in severity of fatigue between the two groups ateach visit (N=41, PP) 65
Figure 17. Changes in discrepancy between desired time in bed and desired total sleep time (DBST index) between the two groups ateach visit (N=41, PP) 67