TABLE 2.
Participant baseline characteristics.
| Total | SleepCare | Waitlist | |
|---|---|---|---|
| (N = 46) | (n = 23) | (n = 23) | |
| Age (years) | 39.7 (12.1) | 39.4 (11.9) | 40.1 (12.5) |
| Sex (female) | 37 (80.4%) | 18 (78.3%) | 19 (82.6%) |
| BMI (kg/m2) | 25.4 (4.4) | 25.4 (4.7) | 25.4 (4.2) |
| Education | |||
| High school or higher | 29 (60.9%) | 15 (65.2%) | 14 (60.9%) |
| Secondary school | 17 (39.1%) | 8 (34.8%) | 9 (39.1%) |
| Married | 16 (34.8%) | 9 (39.1%) | 7 (30.4%) |
| Children in household | 17 (37.0%) | 7 (30.4%) | 10 (43.5%) |
| Working min. 80% | 39 (84.8%) | 22 (95.7%) | 17 (73.9%) |
| Working hours per week | 35.2 (5.8) | 36.6 (5.0) | 33.8 (6.2) |
| Hours worked per shift | 8.1 (0.4) | 8.1 (0.4) | 8.0 (0.4) |
| Number of night shifts per month | 4.5 (2.8) | 4.4 (2.4) | 4.6 (3.0) |
| Number of different shifts worked | |||
| 2 | 4 (8.7%) | 2 (4.3%) | 2 (4.3%) |
| 3 | 37 (80.4%) | 17 (40.0%) | 20 (43.5%) |
| 4 | 2 (4.3%) | 1 (2.2%) | 1 (2.2%) |
| 5 | 2 (4.3%) | 2 (4.3%) | 0 (0.0%) |
| 6 | 1 (2.2%) | 1 (2.2%) | 0 (0.0%) |
| Working irregular schedules a | 29 (63.0%) | 16 (69.6%) | 13 (56.5%) |
| Years working shifts | 15.0 (8.0) | 16.3 (8.5) | 13.7 (7.5) |
| Years suffering from SWD with insomnia | 7.4 (9.6) | 5.6 (6.3) | 9.2 (11.8) |
| Working with COVID patients | 30 (65.2%) | 15 (65.2%) | 15 (65.2%) |
| Reporting moderate to strong COVID‐related burden | 34 (73.9%) | 15 (65.2%) | 19 (82.6%) |
| Internet use on a daily basis | 46 (100%) | 23 (100%) | 23 (100%) |
| Prior experience with online‐based interventions | 3 (6.5%) | 1 (4.3%) | 2 (8.7%) |
| ISI | 15.4 (4.2) | 15.5 (4.5) | 15.3 (3.9) |
| rMEQ b | 13.8 (3.8) | 13.1 (2.9) | 14.4 (4.5) |
Note: All data are presented as mean (SD) or n (%).
Abbreviations: BMI, body mass index; COVID, Coronavirus SARS‐CoV‐2; ISI, Insomnia Severity Index; rMEQ, reduced Morningness–Eveningness Questionnaire; SWD, shift work disorder.
a
Self‐reported order of different shifts that varies from week to week.
b
Values of a rMEQ total score ≤ 11 correspond to “evening types” and values ≥ 18 correspond to “morning types”.