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Table 1 Characteristics and Comparisons of the Statistical Methods Used for Analysis of Biomarker Data with Limits of Detection

From: Toward improved statistical methods for analyzing Cotinine-Biomarker health association data

Method

n used

(% total)

n below LOD

Transforms censored data to categorical data

Replaces censored values with imputed value

Inherently able to deal with multiple LOD?

Complete Case

5,865 (62)

0

No*

No*

No*

Single Imputation

9,488 (100)

3,623

No

Yes

No

Multiple Imputation

9,488 (100)

3,623

No

Yes

Yes

Logistic regression

9,488 (100)

3,623

Yes

No

Yes

"Reverse" Kaplan-Meier

9,488 (100)

3,623

No

No

Yes

  1. LOD: limit of detection
  2. *Excludes censored data