Table 2

Univariate and multivariate analysis for overall survival in the CLL training series

CharacteristicsEventTotalOS, y
Univariate analysis
Multivariate analysis*
Internal bootstrapping validation
Bootstrap parameter, mean
Bootstrap selection, %
MedianLCIUCIHRLCIUCIPHRLCIUCIPHRLCIUCI
Age§      1.06 1.03 1.08 < .001 1.07 1.04 1.10 < .001 1.07 1.05 1.10 100 
Female 29 139 13.9 10.8 17.0             
Male 49 170 12.2 8.0 16.5 1.53 .096 2.43 .069 1.96 1.20 3.20 .007 2.17 1.28 3.68 91.1 
NOTCH1 germline 62 275 13.9 10.5 17.3             
NOTCH1 mutations 16 34 3.5 7.3 3.77 2.14 6.66 < .001 3.99 2.05 7.76 < .001 4.55 2.23 9.31 98.0 
Rai stage 0-II 55 275 15.6 13.1 18.7             
Rai stage III-IV 23 34 6.0 2.5 9.6 3.99 2.44 6.50 < .001 2.33 1.25 3.99 .007 2.57 1.38 4.82 90.0 
IGHV identity < 98% 42 206 NR               
IGHV identity ≥ 98% 36 103 11.7 6.3 17.2 2.23 1.42 3.52 .001 1.44 0.83 2.50 .191 1.53 0.86 2.71 50.4 
No trisomy 12 52 248 NR               
Trisomy 12 26 61 10.8 5.5 16.0 1.93 1.21 3.01 .006 1.50 0.91 2.64 .108 1.62 0.96 2.74 55.4 
No 11q22-q23 deletion 65 284 15.6 13.3 17.9             
11q22-q23 deletion 13 25 6.8 14.1 2.25 1.23 4.11 .008 1.57 0.76 3.27 .220 1.77 0.81 3.90 47.4 
TP53 germline 61 276 13.9 10.5 17.3             
TP53 disruption 17 33 4.6 1.8 7.3 3.74 2.16 6.49 < .001 3.27 1.80 5.95 < .001 3.38 1.78 6.43 96.5 
CharacteristicsEventTotalOS, y
Univariate analysis
Multivariate analysis*
Internal bootstrapping validation
Bootstrap parameter, mean
Bootstrap selection, %
MedianLCIUCIHRLCIUCIPHRLCIUCIPHRLCIUCI
Age§      1.06 1.03 1.08 < .001 1.07 1.04 1.10 < .001 1.07 1.05 1.10 100 
Female 29 139 13.9 10.8 17.0             
Male 49 170 12.2 8.0 16.5 1.53 .096 2.43 .069 1.96 1.20 3.20 .007 2.17 1.28 3.68 91.1 
NOTCH1 germline 62 275 13.9 10.5 17.3             
NOTCH1 mutations 16 34 3.5 7.3 3.77 2.14 6.66 < .001 3.99 2.05 7.76 < .001 4.55 2.23 9.31 98.0 
Rai stage 0-II 55 275 15.6 13.1 18.7             
Rai stage III-IV 23 34 6.0 2.5 9.6 3.99 2.44 6.50 < .001 2.33 1.25 3.99 .007 2.57 1.38 4.82 90.0 
IGHV identity < 98% 42 206 NR               
IGHV identity ≥ 98% 36 103 11.7 6.3 17.2 2.23 1.42 3.52 .001 1.44 0.83 2.50 .191 1.53 0.86 2.71 50.4 
No trisomy 12 52 248 NR               
Trisomy 12 26 61 10.8 5.5 16.0 1.93 1.21 3.01 .006 1.50 0.91 2.64 .108 1.62 0.96 2.74 55.4 
No 11q22-q23 deletion 65 284 15.6 13.3 17.9             
11q22-q23 deletion 13 25 6.8 14.1 2.25 1.23 4.11 .008 1.57 0.76 3.27 .220 1.77 0.81 3.90 47.4 
TP53 germline 61 276 13.9 10.5 17.3             
TP53 disruption 17 33 4.6 1.8 7.3 3.74 2.16 6.49 < .001 3.27 1.80 5.95 < .001 3.38 1.78 6.43 96.5 

LCI indicates 95% lower confidence interval; UCI, 95% upper confidence interval; and NR, not reached.

*

Shrinkage coefficient, 0.91.

Discrimination: c-index of the original model, 0.792; bias-corrected c-index, 0.015; and optimism, 0.777.

Calibration: calibration slope of the original model, 1.000; bias-corrected calibration slope, 0.910; and optimism, 0.090.

§

Age was treated as a continuous variable.

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