Table 2.
Participants' characteristics (N=178).
| Variable | Study 1a (n=46), mean (SD; range) |
Study 2a (n=73), mean (SD; range) |
Study 3a (n =59), mean (SD; range) |
|
| Age, in years | 34.0 (9.6; 25-62) | 28.6 (11.6; 19-66) | 26.3 (8.5; 21-60) | |
| Gender | ||||
|
|
Female, n(%) | 27 (59) | 37 (51) | 28 (48) |
|
|
Male, n(%) | 19 (41) | 36 (49) | 31 (52) |
| BMI (kg/m2) | 22.8 (3.3; 17.7-32.1) | 23.5 (3.0; 17.1-32.4) | —b | |
| Total smartphone promptsc | 12.31 (1.86; 8-18) | 20.72 (7.85; 3-45) | 14.83 (5.32; 2-29) | |
| Total triggered promptsc | 7.3 (2.99; 2-17) | 20.72 (7.85; 3-45) | 14.83 (5.32; 2-29) | |
| Compliance (%)d | 79.3 (17.3; 22.2-100) | 43.41 (22.5; 4.6-100) | 47.49 (23.7; 6.8-93.1) | |
| Wear-time accelerometer (hr/day)c | 13.6 (1.1; 10.8-16.1) | 14.39 (1.6; 10.2-18.6) | 13.7 (1.3; 10.7-16.5) | |
| Physical activity of complete measurement period (milli g-force)c | 86.87 (22.14; 46-148) | 81.18 (24.78; 32-141) | 79.64 (20.26; 44-155) | |
| Body position: sitting/lying (hr/day)c | 10.2 (1.6; 7.4-13.7) | 9.3 (1.9; 5.7-16.6) | 9.16 (1.42; 5.5-12.5) | |
| Total number of short sedentary bouts (≤ 5 min)c | 11.1 (6.6; 0-29) | 10 (6.6; 0-48) | 11.9 (6.12; 4-39) | |
| Total number of short-to-moderate bouts (6- ≤ 19 min)c | 6.3 (2.6; 0-12) | 7.1 (2.6; 1-13) | 8.6 (3.2; 3-18) | |
| Total number of moderate-to-long bouts (20- ≤ 40 min)c | 3.5 (1.5; 0-7) | 4 (1.8; 0-12) | 3.8 (1.2; 2-7) | |
| Total number of long sedentary bouts (≥ 41 min)c | 4.0 (1.4; 1-7) | 4 (1.4; 1-8) | 3.6 (1.2; 1-6) | |
aNumber of monitoring days per study: Study 1=5 days, Study 2=4 days, Study 3=4 days.
b—not available.
cAggregated within the study day per participant.
dPercentage of answered Ecological Momentary Assessment prompts across each study sample.