Completers only (n=195 participants)—pre/post analyses
| Model | Outcome (Yt and/or Ct) | GMC (n=117) | Usual care (n=78) | GMC vs usual care (95% CI) | p Value |
|---|---|---|---|---|---|
| Post-only | 12 months (Y12) | 81.9 | 94.1 | −12.1 (−21.5 to −2.7) | 0.01 |
| SACS | 12 months−baseline (C12) | −12.9 | −2.8 | −10.1 (−20.2 to 0.0) | 0.05 |
| ANCOVA | 12 months (Y12) | 82.3 | 93.5 | −11.2 (−19.2 to −3.3) | 0.006 |
| LDA | Baseline (Y0) | 94.8 | 96.9 | ||
| 12 months (Y12) | 81.9 | 94.1 | −10.1 (−20.2 to 0.0) | 0.05 | |
| cLDA | Baseline (Y0) | 95.7 | 95.7 | ||
| 12 months (Y12) | 82.3 | 93.5 | −11.2 (−19.2 to −3.3) | 0.006 |
ANCOVA, analysis of covariance; cLDA, constrained longitudinal data analysis; GMC, Group Medical Clinics; LDA, longitudinal data analysis; SACS, simple change score analysis.