Table 1.
Percentage weight change (M (SD)) by treatment group overall and by self-monitoring adherence during active treatment
| Treatment Group |
Percentage of time adherent to self-monitoring |
6 months | 12 months | 18 months |
|---|---|---|---|---|
| Paper Diary (n=72) |
Overall | −4.59 (5.66) | −4.04 (6.67) | −1.99 (7.04) |
| < 30% | −0.20 (3.20); n=18 | −2.24 (6.03); n=53 | −1.77 (7.54); n=66 | |
| 30%–59% | −2.76 (4.73); n=21 | −8.64 (4.93); n=7 | −0.99 (1.11); n=2 | |
| At least 60% | −8.93 (5.63); n=33 | −11.47 (7.73); n=12 | −10.15 (8.45); n=4 | |
| PDA (n=68) |
Overall | −4.88 (6.20) | −4.04 (7.20) | −2.01 (8.09) |
| Less than 30% | −0.96 (5.67); n=6 | −1.02 (6.49); n=38 | −0.04 (7.51); n=54 | |
| 30% to 59% | −1.87 (6.77); n=14 | −6.68 (6.67); n=12 | −12.54 (9.59); n=6 | |
| At least 60% | −6.97 (6.76); n=48 | −10.86 (8.29); n=18 | −10.35 (9.42); n=8 | |
| PDA+FB (n=70) |
Overall | −6.58 (6.77) | −6.02 (7.73) | −3.81 (7.07) |
| Less than 30% | 0.04 (4.40); n=5 | −2.00 (5.06); n=32 | −2.53 (6.52); n=57 | |
| 30% to 59% | −2.22 (4.97); n=14 | −4.19 (5.82); n=12 | −11.67 (9.15); n=5 | |
| At least 60% | −8.82 (6.57); n=51 | −12.93 (8.56); n=26 | −10.15 (8.64); n=8 |
Note: 0.3 kg/month was added to previous observation for missing data. Marginal modeling with generalized estimating equations showed that the proportion of participants in the most adherent group (≥60% adherent) was higher in each of the PDA groups compared to the paper diary group (PDA vs paper diary, p=0.03; PDA+FB vs paper diary, p=0.01).
PDA+FB, PDA plus feedback