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Table 2 Results of simulation study to test (B1) and (B2)

From: Discrimination-based sample size calculations for multivariable prognostic models for time-to-event data

Simulation parameters

 

Observed (B1)

 

Observed (B2)

β

D

power

δ

cens

 

e 2

% type 1 (se)

% power (se)

 

e 2

% type 1 (se)

% power (se)

1.0

1.6

80 %

0.4

0

 

222

5.5 (0.51)

81.7 (0.86)

 

222

5.0 (0.49)

81.5 (0.87)

    

80

 

141

5.6 (0.51)

80.8 (0.88)

 

133

5.1 (0.49)

79.5 (0.90)

2.0

3.2

90 %

0.5

0

 

495

4.0 (0.44)

89.6 (0.68)

 

483

4.0 (0.44)

88.1 (0.73)

    

80

 

286

4.8 (0.48)

92.1 (0.60)

 

291

4.4 (0.46)

92.2 (0.60)