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Table 4 Type 1 Error Rates as Sample Size Increases for Simulation Study

From: Modeling observations with a detection limit using a truncated normal distribution with censoring

n

GS1

Uncens NT2

DL3

1/2 DL

Tobit4

tcensReg5

100

.0569

.0762

.1835

.0645

.0662

.0578

200

.0633

.1020

.2974

.0831

.0813

.0661

400

.0610

.1286

.4698

.1023

.0945

.0640

800

.0580

.1794

.7238

.1303

.1102

.0606

1600

.0576

.2707

.9410

.1861

.1452

.0616

  1. Note: nominal α set to 0.05
  2. 1GS = Gold Standard, i.e., uncensored observations with truncation adjustment
  3. 2Uncens NT = Uncensored data with no truncation adjustment
  4. 3DL = detection limit
  5. 4Tobit = Tobit censored regression with no truncation adjustment
  6. 5tcensReg = Censored regression with truncation adjustment
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BMC Medical Research Methodology

ISSN: 1471-2288

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