hepatic_pvb

The data set pertains to hepatic scintigraphy, a diagnostic imaging technique used for detecting liver cancer. The test was performed on 650 patients, where 344 patients were verified by liver pathological examination (gold standard test). The percentage of unverified patients is 47.1%.

datasets

Performs partial verification bias (PVB) correction for binary
diagnostic tests, where PVB arises from selective patient verification in
diagnostic accuracy studies. Supports correction of important accuracy
measures -- sensitivity, specificity, positive predictive values and
negative predictive value -- under missing-at-random and
missing-not-at-random missing data mechanisms. Available methods and
references are "Begg and Greenes' methods" in Alonzo & Pepe (2005)
<doi:10.1111/j.1467-9876.2005.00477.x> and deGroot et al. (2011)
<doi:10.1016/j.annepidem.2010.10.004>; "Multiple imputation" in
Harel & Zhou (2006) <doi:10.1002/sim.2494>, "EM-based logistic regression"
in Kosinski & Barnhart (2003) <doi:10.1111/1541-0420.00019>;
"Inverse probability weighting" in Alonzo & Pepe (2005)
<doi:10.1111/j.1467-9876.2005.00477.x>; "Inverse probability bootstrap
sampling" in Nahorniak et al. (2015) <doi:10.1371/journal.pone.0131765>
and Arifin & Yusof (2022) <doi:10.3390/diagnostics12112839>;
"Scaled inverse probability resampling methods" in Arifin & Yusof (2025)
<doi:10.1371/journal.pone.0321440>.

Wan Nor Arifin

PVBcorrect

Partial Verification Bias Correction for Diagnostic Accuracy

hepatic_pvb function

A data frame with 650 rows and three variables:<dl>
 <dt>disease:</dt>
<dd>Liver cancer, \(disease\): Binary, 1 = Yes, 0 = No</dd> <dt>test:</dt>
<dd>Hepatic scintigraphy, \(test\): Binary, 1 = Positive, 0 = Negative</dd> <dt>verified:</dt>
<dd>Verified, \(verified\): Binary, 1 = Yes, 0 = No</dd>
</dl>

Format

Hepatic scintigraphy test data set — hepatic_pvb

A data frame with 650 rows and three variables:<dl>
 <dt>disease:</dt>
<dd>Liver cancer, \(disease\): Binary, 1 = Yes, 0 = No</dd>

 <dt>test:</dt>
<dd>Hepatic scintigraphy, \(test\): Binary, 1 = Positive, 0 = Negative</dd>

 <dt>verified:</dt>
<dd>Verified, \(verified\): Binary, 1 = Yes, 0 = No</dd>


</dl>

hepatic_pvb: Hepatic scintigraphy test data set

Description

Usage

Arguments

Format