Results

Logistic Regression

Model Summary - Cured
Model Deviance AIC BIC df ΔΧ² p McFadden R² Nagelkerke R² Tjur R² Cox & Snell R²
M₀ 154.084 156.084 158.811 112     0.000 0.000
M₁ 144.156 150.156 158.338 110 9.928 0.007 0.064 0.113 0.086 0.084
M₂ 144.156 150.156 158.338 110 0.000   0.064 0.113 0.086 0.084
M₃ 144.095 152.095 163.004 109 0.061 0.805 0.065 0.114 0.087 0.085
Note.  M₁ includes Intervention, Duration
Note.  M₂ includes Duration, Intervention
Note.  M₃ includes Duration, Intervention, Duration:Intervention
Coefficients
Wald Test
95% Confidence interval
(odds ratio scale)
Model   Estimate Robust
Standard Error
Odds Ratio z Wald Statistic df p Lower bound Upper bound
M₀ (Intercept) 0.303 0.190 1.354 1.593 2.538 1 0.111 0.933 1.966
M₁ (Intercept) -0.235 1.219 0.791 -0.192 0.037 1 0.847 0.073 8.625
  Intervention (Treatment) 1.234 0.414 3.433 2.982 8.854 1 0.003 1.526 7.723
  Duration -0.008 0.176 0.992 -0.045 0.002 1 0.964 0.703 1.401
M₂ (Intercept) -0.235 1.219 0.791 -0.192 0.037 1 0.847 0.073 8.625
  Duration -0.008 0.176 0.992 -0.045 0.002 1 0.964 0.703 1.401
  Intervention (Treatment) 1.234 0.414 3.433 2.982 8.854 1 0.003 1.526 7.723
M₃ (Intercept) -0.520 1.665 0.594 -0.313 0.095 1 0.755 0.023 15.523
  Duration 0.034 0.243 1.035 0.142 0.020 1 0.887 0.643 1.665
  Intervention (Treatment) 1.850 2.526 6.363 0.733 0.533 1 0.464 0.045 899.362
  Duration * Intervention (Treatment) -0.087 0.351 0.917 -0.248 0.061 1 0.804 0.461 1.822
Note.  Cured level 'Cured' coded as class 1.

Performance Diagnostics

Confusion matrix
Predicted
Observed Not cured Cured % Correct
Not cured 32 16 66.667
Cured 24 41 63.077
Overall % Correct 64.602
Note.  The cut-off value is set to 0.5

Logistic Regression: Only Intervention

Model Summary - Cured
Model Deviance AIC BIC df ΔΧ² p McFadden R² Nagelkerke R² Tjur R² Cox & Snell R²
M₀ 154.084 156.084 158.811 112     0.000 0.000
M₁ 144.158 148.158 153.613 111 9.926 0.002 0.064 0.113 0.086 0.084
Note.  M₁ includes Intervention
Coefficients
Wald Test
95% Confidence interval
(odds ratio scale)
Model   Estimate Robust
Standard Error
Odds Ratio z Wald Statistic df p Lower bound Upper bound
M₀ (Intercept) 0.303 0.190 1.354 1.593 2.538 1 0.111 0.933 1.966
M₁ (Intercept) -0.288 0.270 0.750 -1.065 1.135 1 0.287 0.442 1.273
  Intervention (Treatment) 1.229 0.400 3.417 3.074 9.447 1 0.002 1.561 7.480
Note.  Cured level 'Cured' coded as class 1.

Performance Diagnostics

Confusion matrix
Predicted
Observed Not cured Cured % Correct
Not cured 32 16 66.667
Cured 24 41 63.077
Overall % Correct 64.602
Note.  The cut-off value is set to 0.5

Estimates plots

Intervention