Characteristics of study participants at baseline assessment (n=194)
| Variables | Participants | |
| Age, mean (SD) | 37.11 (10.77) | |
| Gender (male), n (%) | 58 (29.9) | |
| BMI, mean (SD) | 21.92 (3.06) | |
| Education level (years), mean (SD) | 15.48 (3.03) | |
| Marital status, n (%) | ||
| Single | 63 (32.5) | |
| Married | 122 (62.9) | |
| Divorced | 9 (4.6) | |
| Living status, n (%) | ||
| Alone | 44 (22.7) | |
| With parents | 51 (26.3) | |
| With children | 86 (44.3) | |
| With friends | 13 (6.7) | |
| Employment, n (%) | ||
| Full time | 149 (76.8) | |
| Part time | 6 (3.1) | |
| Unemployed | 11 (5.7) | |
| Retired | 15 (7.7) | |
| Student | 13 (6.7) | |
| Monthly income, n (%) | ||
| <￥3 000 | 22 (11.3) | |
| ￥3 000–5 000 | 56 (28.9) | |
| ￥5 000–￥10 000 | 59 (30.4) | |
| >￥10 000 | 57 (29.4) | |
| Sleep latency (min), n (%) | ||
| <10 | 10 (5.2) | |
| 11–30 | 58 (29.9) | |
| 31–60 | 59 (30.4) | |
| >60 | 67 (34.5) | |
| Sleep duration at baseline (hours), median (Q1–Q3) | 6 (5–7) | |
| Treatment duration (days), median (Q1–Q3) | 5 (3–7) |
BMI, body mass index; SD, standard deviation.