chlamydia: Screening tests for _Chlamydia trachomatis_.

In trobinj/trtools: Miscellaneous Tools for Teaching Statistics

Screening tests for Chlamydia trachomatis.

Description

Results of six tests for Chlamydia trachomatis using samples from 4583 women.

Usage

chlamydia

Format

A data frame of 4583 observations and six variables.

count:

number of samples

Syva-DFA:

test result from Syva-DFA test

Syva-EIA:

test result from Syva-EIA test

Abbott-EIA:

test result from Abott-EIA test

GenProbe:

test result from GenProbe test

Sanofi-EIA:

test result from Sanofi-EIA test

culture:

test result from cell culture

Note

Note that the data are in aggregated form showing the number of samples that resulted in a particular profile of test results. All test results are binary indicator variables for positive test results. The data are from Hadgu and Qu (1998) but are also featured in Lindsey (1999) who suggests a latent class model with or without a continuous random effect, and with or without treating the cell culture as a gold standard.

Source

Hadgu, A. & Qu, Y. (1998). A biomedical application of latent class models with random effects. Applied Statistics, 47, 603-616.

Lindsey, J. K. (1999). Models for repeated measurements (2nd Edition). New York: Oxford.

trobinj/trtools documentation built on Jan. 28, 2024, 3:20 a.m.