Table 2.
Baseline characteristics for those who provided data at four weeks versus not.
| Participant characteristicsa | Noncompleters | Completers | Statistics | P value |
| Age in years, median (interquartile range) | 23 (20-25) | 23 (20-25) | z=0.05 | .96 |
| Female gender, n (%) | 14 (77.0) | 148 (76.7) | χ21=0.0 | .95 |
| Prior app usage, n (%) | 69 (35.6) | 68 (35.2) | t358=0.50 | .94 |
| MHC-SFa, median (interquartile range) | 41 (27-50) | 40 (28-52) | t358=0.50 | .78 |
| Subscale: emotional, median (interquartile range) | 10 (7-12) | 10 (8-12) | z=0.82 | .41 |
| Subscale: social, median (interquartile range) | 12 (6-17) | 12 (7-17) | z=0.49 | .62 |
| Subscale: psychological, median (interquartile range) | 19 (11-22) | 18 (12-23) | z=0.14 | .89 |
| EMAb “rest,” median (interquartile range) | 50 (35.5-63) | 50 (36-65) | z=0.18 | .86 |
| EMA “mood,” median (interquartile range) | 50 (40-70) | 60 (50-70) | z=2.13 | .03 |
| EMA “energy,” median (interquartile range) | 50 (30-60) | 50 (40-60) | z=0.66 | .51 |
| EMA “sleep,” median (interquartile range) | 420 (375-480) | 435 (360-525) | z=0.22 | .85 |
aMHC-SF: Mental Health Continuum-Short Form.
bEMA: ecological momentary assessment.