Regular paper
Cost-effectiveness of HIV screening of pregnant women in hospitals of the Paris area

https://doi.org/10.1016/0028-2243(90)90091-EGet rights and content

Abstract

In the context of an epidemiologic multicentric study about perinatal transmission of HIV, screening was systematically proposed to all pregnant women attending nine maternities clinics of the Paris region (n = 7600, between August 1987 and July 1988) at their first prenatal visit. Among them, 2145 had already been tested and 45 were known to be HIV positive. So, 5660 tests were performed during the first 6 months (period 1), and 17 pregnant women were discovered to be positive. The total cost of screening has been estimated between FF. 720 000 and 775 000, resulting in a mean cost per pregnant woman found to be HIV positive of about FF. 42 000 to 45 000. A similar calculation over the following 5 months (period 2) gave a mean cost of between FF. 165 000 and 178 000. Since the women, before being screened, had to answer a short questionnaire about risk factors; cost and effectiveness of a selective screening strategy could be simulated. The preference of systematic screening to selective screening enabled the discovery of two HIV positive cases in each period, the marginal cost, i.e., cost per extra pregnant woman found to be HIV positive was thus FF. 303 320 to 327 540 for period 1, and FF. 572 240 to 619 000 for period 2. Although these figures seem high, an estimation of the cost-effectiveness does not allow us to conclude whether it is in society's interest to devote the funds necessary to move away from selective screening towards systematic screening. The quadrupling of the mean cost of identifying an HIV positive pregnant woman during hospital screening, despite a concomitant increase in prevalence in this population, can be explained only by an increase in prenatal screening prescribed by the private practitioner in ambulatory medicine. The evolution in the hospital program of systematic screening of pregnant women in the Paris area clearly shows that an evaluation of a policy of HIV screening amongst pregnant women depends, at least in the French health system, on the different ways in which the ambulatory and hospital sectors complement themselves when trying to cope with the monitoring of women during pregnancy.

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