Table 5.

Key Summary Measures

Proportion consenting	Proportion of offered population that consented to testing.
Proportion ED population tested	Proportion of ED population tested.
Proportion target population tested	Proportion of target population tested.
Cost per patient tested	Estimated program costs divided by the number of tested patients.
Proportion receiving confirmatory testing	Proportion of population preliminary positive that receives confirmatory testing.
Proportion positive	Proportion of population tested that are confirmed to be positive.
Positive predictive value of preliminary positive assay	Among patients for whom confirmatory test information is available, the proportion of preliminary positive test results that are confirmed to be positive.
Proportion successfully notified	Proportion of population tested who are successfully notified of their results, categorized by test result.
Proportion newly positive— or program prevalence	Proportion of population tested who are confirmed to be positive and not known to be previously diagnosed.
Proportion linked positives	Proportion of newly positive population successfully linked to care.
Confirmed positive CD4 count	Median value of CD4 counts obtained within 90 days of index test for population newly positive.
Proportion late diagnoses	Proportion of population newly positive who have late diagnosis.
Cost per positive	Estimated program costs divided by the number of newly positive persons.
Cost per linked positive	Estimated program costs divided by the number of newly positive persons who were linked to care.

ED = emergency department.