Skip to main content

Advertisement

Table 2 ANCOVA models, and solution for final model

From: Randomized trial of tapas acupressure technique for weight loss maintenance

   Initial model Augmented Model Final Model Solution in final model
Effect Level df F p < df F p < df F p < Parameter Estimate Std Error Confidence Limits  
  Intercept           1.65 2.98 -4.22 7.51
Treatment assignment (tx) SS 1 2.79 0.0974 1 3.24 0.0722 1 3.84 0.0510 -8.18 4.17 -16.39 .04
Race Non-white 1 1.02 0.3165 1 0.79 0.3754 1 1.80 0.1827 -2.03 1.51 -5.03 0.97
Sex Male 1 0.06 0.8136 1 0.13 0.7177 1 0.00 0.9977 0.00 0.94 -1.86 1.86
Phase I weight change   1 0.55 0.4644 1 2.92 0.0903 1 2.62 0.1102 0.19 0.12 -0.04 0.42
Randomization weight   1 0.67 0.4111 1 0.09 0.7670 1 0.05 0.8248 -0.01 0.03 -0.06 0.05
Phase I weight change*tx SS     1 3.03 0.0829 1 4.45 0.0359 -0.32 0.15 -0.61 -0.02
Randomization weight*tx SS     1 2.59 0.1088 1 2.46 0.1176 0.06 0.04 -0.02 0.14
Education 1. High School or less        3 3.71 0.011 4.44 1.34 1.80 7.09
  2. Some College           1.32 0.86 -0.39 3.02
  3. College degree           0.69 0.92 -1.12 2.50
  5. Part college (reference)           0.00 . . .
Phase II %attendance 1. < 50%        4 3.62 0.006 2.30 1.33 -0.35 4.95
  2. 50-63%           4.35 1.13 2.13 6.56
  3. 75%           3.11 1.11 0.93 5.30
  4. 87.5%           2.53 1.07 0.43 4.63
  5. 100% (reference)           0.00 . . .