Table 1.
Metric, simulation type, and attrition severity | Location of phase transition | 3% user-specified threshold | GLMMa | DTSAb | ||
Type I error | ||||||
|
Constant | |||||
|
|
Mild | —c | 0.19 | 0.01 | 0.74 |
|
|
Severe | —c | 0.53 | 0.98 | 0.96 |
Sensitivity | ||||||
|
Two phases | |||||
|
|
Mild | Middle | 0.47 | 0.22 | 0.90 |
|
|
Mild | Start | 0.48 | 0.17 | 0.94 |
|
|
Mild | End | 0.72 | 0.13 | 0.87 |
|
|
Mild reverse | Middle | 0.44 | 0.20 | 0.64 |
|
|
Mild reverse | Start | 0.51 | 0.01 | 0.69 |
|
|
Mild reverse | End | 0.41 | 0.14 | 0.58 |
|
|
Severe | Middle | 0.82 | 0.24 | 0.91 |
|
|
Severe | Start | 0.79 | 0.20 | 0.97 |
|
|
Severe | End | 0.90 | 0.56 | 0.88 |
|
|
Severe reverse | Middle | 0.88 | 0.02 | 0.58 |
|
|
Severe reverse | Start | 0.90 | 0.01 | 0.69 |
|
|
Severe reverse | End | 0.88 | 0.00 | 0.50 |
|
Three phases | |||||
|
|
Mild | Middle | 0.67 | 0.12 | 0.08 |
|
|
Mild | 1 start | 0.96 | 0.32 | 0.07 |
|
|
Mild | 1 end | 0.96 | 0.35 | 0.05 |
|
|
Mild | Ends | 0.96 | 0.51 | 0.03 |
|
|
Severe | Middle | 0.98 | 0.84 | 0.08 |
|
|
Severe | 1 start | 0.96 | 0.99 | 0.07 |
|
|
Severe | 1 end | 0.96 | 0.99 | 0.06 |
|
|
Severe | Ends | 0.94 | 0.99 | 0.04 |
aGLMM: generalized linear mixed model.
bDTSA: discrete time survival analysis.
cNot applicable in the case of constant attrition.