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Table 4 Time to BCR

From: Effect of the number of removed lymph nodes on prostate cancer recurrence and survival: evidence from an observational study

 

Nodes group

t=60 months

t=90 months

t=120 months

  

Mean

95% C.I.

Mean

95% C.I.

Mean

95% C.I.

Unweighted KM

1 (1-10)

0.866

0.836

0.898

0.764

0.710

0.822

0.692

0.612

0.782

 

2 (11-20)

0.841

0.815

0.867

0.748

0.710

0.789

0.679

0.627

0.736

 

3 (21+)

0.855

0.820

0.892

0.795

0.729

0.868

0.795

0.729

0.868

 

1 vs 2

0.026

-0.015

0.066

0.016

-0.051

0.083

0.031

-0.048

0.111

 

1 vs 3

0.011

-0.038

0.061

-0.031

-0.119

0.057

-0.047

-0.141

0.048

 

2 vs 3

-0.014

-0.061

0.032

-0.047

-0.124

0.030

-0.078

-0.160

0.004

Weighted KM

1 (1-10)

0.847

0.839

0.855

0.717

0.701

0.732

0.627

0.605

0.650

 

2 (11-20)

0.835

0.812

0.858

0.744

0.711

0.778

0.681

0.637

0.728

 

3 (21+)

0.883

0.871

0.895

0.846

0.828

0.863

0.846

0.828

0.863

 

1 vs 2

0.013

-0.032

0.058

-0.027

-0.102

0.047

-0.031

-0.119

0.057

 

1 vs 3

-0.036

-0.092

0.020

-0.129

-0.232

-0.026

-0.161

-0.271

-0.050

 

2 vs 3

-0.049

-0.104

0.006

-0.102

-0.197

-0.007

-0.130

-0.229

-0.031

Doubly Robust

1 (1-10)

0.839

0.791

0.887

0.705

0.605

0.805

0.592

0.432

0.752

 

2 (11-20)

0.812

0.773

0.850

0.693

0.625

0.762

0.614

0.516

0.713

 

3 (21+)

0.852

0.809

0.896

0.819

0.764

0.873

0.819

0.747

0.890

 

1 vs 2

0.027

-0.035

0.089

0.012

-0.098

0.122

0.035

-0.112

0.182

 

1 vs 3

-0.014

-0.080

0.052

-0.113

-0.222

-0.005

-0.141

-0.275

-0.007

 

2 vs 3

-0.041

-0.103

0.021

-0.125

-0.225

-0.025

-0.176

-0.298

-0.054

  1. The table contains, for each estimation method: (i) the estimated survival probabilities at 60, 90, and 120 months for each of the three treatment groups; (ii) the pairwise differences between the estimated survival probabilities across the three treatment groups. All estimated quantities come with bootstrap 95% confidence intervals