TABLE 5.

Tests of Specific Contrasts of Commitment Level and A1C Category Over Time

ComparisonEstimate*SEzP
Proportion with A1C <7.0%
 Low vs. high commitment (main effect, all times)0.9960.5261.890.0585
 Moderate vs. high commitment (main effect, all times)0.9810.4722.080.0378
 Low vs. high commitment (interaction over time)–0.3060.268–1.140.2545
 Moderate vs. high commitment (interaction over time)–0.2980.252–1.180.2365
 Within low commitment only (time 1 vs. time 3)0.0490.1670.290.7682
 Within moderate commitment only (time 1 vs. time 3)0.0370.1280.290.7711
 Within high commitment only (time 1 vs. time 3)0.3080.1951.580.1132
Proportion with A1C of ≥9.0%
 Low vs. high commitment (main effect, all times)–1.4580.531–2.740.0061
 Moderate vs. high commitment (main effect, all times)–0.6240.496–1.260.2082
 Low vs. high commitment (interaction over time)0.4620.2401.920.0545
 Moderate vs. high commitment (interaction over time)0.3020.2211.370.1715
 Within low commitment only (time 1 vs. time 3)0.1050.1670.630.5288
 Within moderate commitment only (time 1 vs. time 3)–0.0150.192–0.360.7159
 Within high commitment only (time 1 vs. time 3)–0.3820.183–2.090.0369
  • * Generalized estimating equation parameter estimate.