Dealing with clusters
|
Statistical model
|
Parameter Estimates
|
Standard Error
| | |
---|
HR [95%CI]
|
p-value
|
---|
With stratification by clusters
|
AG
|
0.033
|
0.122
|
1.034 [0.814, 1.314]
|
0.785
|
PWP-TT
|
-0.061
|
0.123
|
0.941 [0.739, 1.198]
|
0.621
|
PWP-GT
|
0.054
|
0.117
|
1.056 [0.840, 1.327]
|
0.641
|
Without stratification by clusters
|
AG
|
0.096
|
0.094
|
1.102 [0.915, 1.326]
|
0.306
|
PWP-TT
|
0.040
|
0.095
|
1.041 [0.863, 1.254]
|
0.676
|
PWP-GT
|
0.087
|
0.091
|
1.090 [0.912, 1.304]
|
0.360
|
- AG Andersen-Gill, PWP-TT Prentice-Williams-Peterson Total-Time, PWP-GT Prentice-Williams-Peterson Gap-Time, HR Hazard ratio, CI Confidence interval