Table 2.
Changes over Time in Self-Reported and IPD Recordings (n=35) using Random Coefficients Modeling
| Phase 1 | Phase 2 | Phase 3 | F-value | t-value (p-value) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (1–6 mo) | (6–12 mo) | (12–18 mo) | (p-value) | Differences between Phases | ||||||
| Adherence measures | M | SE | M | SE | M | SE | Overall | 1 & 2 | 1 & 3 | 2 & 3 |
| # of IPD openings/day | 2.5 | 0.3 | 1.4 | 0.4 | 1.2 | 0.4 | 8.48 (.001) | 2.77 (.009) | 3.69 (<.001) | 0.53 (.600) |
| # of diary entries/day | 4.0 | 0.4 | 3.6 | 0.5 | 1.8 | 0.5 | 11.27 (<.001) | 0.89 (.380) | 4.73 (<.001) | 2.98 (.005) |
| Time between eating & recording, hours | 6.4 | 3.5 | 8.4 | 3.5 | 8.4 | 3.5 | 0.63 (.541) | −2.00 (.342) | −2.00 (.342) | 0.00 (.999) |
| Time IPD was open, hours | 0.6 | 0.1 | 0.9 | 0.2 | 0.8 | 0.2 | 1.05 (.364) | −0.24 (.196) | −0.15 (.362) | 0.09 (.686) |
| # of recorded entries/day w/in 2 hours of eating | 2.0 | 0.2 | 1.5 | 0.3 | 0.6 | .3 | 8.63 (<.001) | 1.37 (.179) | 4.15 (<.001) | 2.10 (.042) |
| % of recorded entries/day w/in 2 hrs of eating | 51.1 | 5.3 | 48.4 | 7.5 | 37.4 | 7.7 | 1.75 (.193) | 0.39 (.701) | 1.87 (.072) | 1.20 (.239) |
| # of recorded entries/day w/in 6 hours of eating | 2.7 | 0.3 | 1.9 | 0.5 | 0.8 | 0.4 | 10.49 (<.001) | 1.70 (.097) | 4.55 (<.001) | 2.13 (.039) |
| % of recorded entries/day w/in 6 hrs of eating | 67.1 | 5.5 | 59.3 | 8.1 | 46.6 | 8.4 | 3.20 (.056) | 0.98 (.337) | 2.48 (.019) | 1.24 (.224) |
| % of diary recordings of eating w/in 15 minutes of IPD opening | 20.7 | 3.8 | 14.7 | 5.3 | 19.2 | 4.9 | 0.80 (.458) | 1.27 (.215) | 0.35 (.727) | −0.82 (.421) |
| % of diary recording of eating w/in 15 minutes of IPD opening relative to expected minimum # entries (3 entries) | 25.4 | 4.0 | 15.4 | 5.6 | 12.7 | 5.2 | 4.29 (.022) | 1.92 (.064) | 2.65 (.012) | 0.44 (.665) |