Skip to main content

Table 4 Monte Carlo Results: Estimation of recurrence of adenomas at three years (true recurrence rate: 0.495) under a situation of dependent censoring with five auxiliary variables.

From: Estimation of colorectal adenoma recurrence with dependent censoring

Method

Est

Bias

SD

SE

CR

λ e (t)a= t 0.1 * exp(-2.5Z 1 - 0.5Z 2 - 2.0Z 3 - 0.25Z 4 + 0.5Z 5)

p ec = 0.30; early censoring rate = 19.9%; |r| = 0.83

NPMLE

0.447

-0.048

0.0385

0.0389

74.6

KM

0.456

-0.039

0.0376

0.0378

82.2

Logit

0.398

-0.097

0.0347

0.0345

19.0

WLogit

0.460

-0.035

0.0379

0.0384

85.6

WKMr+c(4,1)

0.483

-0.012

0.0368

0.0373

94.0

WKMr(4)

0.480

-0.015

0.0371

0.0371

92.8

WKMc(4)

0.479

-0.016

0.0376

0.0376

93.0

λ e (t) = t 0.1 * exp(-2.5Z 1 + 0.4Z 2 - 2.0Z 3 - 0.3Z 4 + 0.5Z 5)

p ec = 0.40; early censoring rate = 27.8%; |r| = 0.86

NPMLE

0.420

-0.075

0.0397

0.0402

54.4

KM

0.434

-0.061

0.0382

0.0388

65.0

Logit

0.356

-0.139

0.0327

0.0338

1.0

WLogit

0.439

-0.056

0.0388

0.0397

72.8

WKMr+c(4,1)

0.471

-0.024

0.0381

0.0385

89.0

WKMr(4)

0.468

-0.027

0.0384

0.0382

89.6

WKMc(4)

0.466

-0.029

0.0385

0.0390

87.6

λ e (t) = t 0.1 * exp(-2.5 Z 1 + 0.9Z 2 - 1.5Z 3 - 0.5Z 4 + 0.5Z 5)

p ec = 0.50; early censoring rate = 36.6%; |r| = 0.78

NPMLE

0.407

-0.088

0.0409

0.0428

46.6

KM

0.421

-0.074

0.0395

0.0403

57.2

Logit

0.321

-0.174

0.0321

0.0329

0.0

WLogit

0.429

-0.066

0.0399

0.0415

63.8

WKMr+c(4,1)

0.468

-0.027

0.0408

0.0405

89.0

WKMr(4)

0.462

-0.033

0.0408

0.0396

86.4

WKMc(4)

0.457

-0.038

0.0406

0.0416

84.0

  1. ahazard function for time to colonoscopy.