Table 2.
Differences in anthropometric measures between the app group and the paper-based diary group (intent-to-treat analysis).
| Measure | App group (n=25), mean (SD) | Paper-based diary group (n=25), mean (SD) | P valuea | |||||||
|
|
Baseline | 6 weeks | Changeb | P valuec | Baseline | 6 weeks | Changeb | P valuec |
|
|
| Weight (kg) | 78.0 (12.9) | 77.6 (13.0) | –0.4 (1.6) | .25 | 76.3 (10.2) | 75.0 (9.3) | –1.4 (2.7) | .02 | .33 | |
| BMI (kg/m2) | 27.1 (3.0) | 26.9 (3.0) | –0.1 (0.6) | .26 | 26.4 (2.5) | 25.9 (2.2) | –0.5 (0.9) | .01 | .34 | |
| Waist circumference (cm) | 93.1 (9.6) | 90.9 (9.2) | –2.2 (2.8) | <.001 | 90.3 (9.0) | 88.1 (7.1) | –2.3 (3.8) | .004 | .70 | |
| Body fat mass (kg) | 24.2 (5.6) | 23.0 (6.1) | –1.2 (1.8) | .004 | 22.3 (6.9) | 21.0 (5.9) | –1.3 (2.4) | .01 | .71 | |
| Skeletal muscle mass (kg) | 30.2 (6.5) | 30.6 (6.6) | 0.4 (1.0) | .048 | 30.4 (5.7) | 30.4 (5.8) | –0.01 (0.7) | .48 | .054 | |
aIndependent t tests or Wilcoxon Mann-Whitney tests were used to assess the differences in percent changes in anthropometric measures between the app group and the paper-based diary group.
bChanges were calculated as postintervention anthropometric measures minus preintervention anthropometric measures.
cPaired t tests or Wilcoxon signed-rank tests were used to assess the differences in percent changes in anthropometric measures pre- to postintervention.