Background
As antiretroviral treatment (ART) for HIV/AIDS is scaled-up globally,
information on per-person costs is critical to improve efficiency in service
delivery and maximize coverage and health impact.
Objective
To review studies on delivery unit costs for adult and pediatric ART
provision per-patient-year, and prevention of mother-to-child transmission
(PMTCT) interventions per mother-infant pair screened or treated, in low-
and middle-income countries.
Methods
Systematic review of English, French and Spanish publications from
2001 to 2009, reporting empirical costing that accounted for at least
antiretroviral (ARV) medicines, laboratory testing and personnel.
Expenditures were analyzed by country income level and cost component. All
costs were standardized to 2009 US dollars.
Results
Analyses covered 29 eligible, comprehensive costing studies. In the
base case, in low-income countries (LIC), median, ART cost per patient-year
was $792 (mean: $839, range: $682-$1089);
for lower-middle-income countries (LMIC), the median was $932 (mean:
$1246, range: $156-$3904); and for
upper-middle-income countries (UMIC) the median was $1454 (mean:
$2783, range: $1230-$5667). ARV drugs were largest
component of overall ART cost in all settings (62%, 50% and
47% in LIC, LMIC and UMIC respectively). Out of 26 ART studies, 14
report which drug regimes were used, and only one study explicitly reported
second line treatment costs. The second cost driver was laboratory cost in
LIC and LMIC (14% and 19.5%) whereas it was personnel costs
in UMIC (26%). Two studies specified the types of laboratory tests
costed, and three studies specifically included above-facility-level
personnel costs. Three studies reported detailed PMTCT costs, and two
studies reported on pediatric ART.
Conclusions
There is a paucity of data on the full ART and PMTCT delivery unit
costs, in particular for low-and middle-income countries. Heterogeneity in
activities costed and insufficient detail regarding components included in
the costing hampers standardization of unit cost measures. Evaluation of
program-level unit costs would benefit from international guidance on
standardized costing methods, and expenditure categories and definitions.
Future work should help elucidate the sources for the large variations in
delivery unit costs across settings with similar income and epidemiological
characteristics.