Table 2.
Baseline data of primary outcome and secondary outcome (N=270).
| Outcomes | Value, mean (SD) | P value | ||||||||
|
|
ICBTa group (n=79) | TGTb group (n=88) | WLCc group (n=103) |
|
||||||
| Primary outcome: insomnia symptoms (PSQId) | 9.8 (2.4) | 9.8 (2.0) | 9.8 (2.3) | .97 | ||||||
| Secondary outcome : sleep | ||||||||||
|
|
AISe | 10.2 (2.9) | 10.0 (2.7) | 10.2 (2.9) | .77 | |||||
|
|
SOLf (minutes) | 41.6 (27.9) | 47.8 (40.6) | 41.2 (35.0) | .66 | |||||
|
|
TSTg (hours) | 318.6 (63.7) | 323.8 (52.1) | 319.9 (61.7) | .17 | |||||
|
|
Sleep efficiency (%) | 82.1 (15.2) | 85.3 (10.9) | 84.3 (14.7) | .55 | |||||
| Secondary outcome : mood | ||||||||||
|
|
GAD-7h | 3.0 (2.5) | 3.1 (2.3) | 3.2 (2.5) | .92 | |||||
|
|
PHQ-9i | 4.5 (2.2) | 4.6 (2.2) | 4.4 (2.2) | .74 | |||||
aICBT: internet-based cognitive behavioral therapy.
bTGT: Three Good Things.
cWLC: waiting list control.
dPSQI: Pittsburgh Sleep Quality Index.
eAIS: Athens Insomnia Scale.
fSOL: sleep onset latency.
gTST: total sleep time.
hGAD-7: Generalized Anxiety Disorder-7.
iPHQ-9: Patient Health Questionnaire-9.