Sleep Diary Measures
The sleep efficiency, sleep latency, number of awakenings during sleep, and wake time after sleep onset of the DCBT-I group were significantly improved compared with the sleep education group at intervention completion. The DCBT-I group had significantly higher total sleep time than the sleep education group at the 3-month (mean [SD], 403.9 [57.6] minutes vs 363.2 [72.3] minutes) and 6-month (mean [SD], 420.3 [58.0] minutes vs 389.7 [59.4] minutes) follow-ups. Similarly, sleep efficiency was significantly better in the DCBT-I group than the sleep education group at the 3-month (mean [SD], 87.4% [8.3%] vs 76.7% [12.1%]) and 6-month (mean [SD], 87.5% [8.2%] vs 78.1% [10.9%]) follow-ups (