The aim of this review is to determine if the use of DHEA increases the
likelihood of success in patients with POR. We searched MEDLINE and EMBASE using
the terms "DHEA and diminished ovarian reserve", "DHEA and poor response", "DHEA
and premature ovarian aging". A fixed effects model was used and Peto's method
to get the odds ratio (OR) with 95% confidence intervals (CI 95%). For
quantitative variables, Cohen's method was used to present the standardized mean
differences (SMD) with their corresponding confidence intervals. Only five
studied fulfilled the selection criteria. DHEA was administered in 25 mg doses,
three times a day. In all studies, the authors corrected for the presence of
confounding variables such as partner's age, infertility diagnosis and number of
transferred embryos. The meta-analysis of the five selected studies assessed a
total of 910 patients, who underwent IVF/ICSI, of which 413 had received DHEA.
DHEA use was associated with a significant increase in pregnancy likelihood (OR
1.8, CI 95% 1.29 to 2.51, p=0.001). When analyzing the
association between DHEA use and the likelihood of abortion, we found low
heterogeneity between studies (I2=0.0%) and the use of DHEA to be
associated to a significant reduction in the likelihood of abortion (OR 0.25, CI
0.07 to 0.95; p=0.045). Analysis of the association of DHEA
with average oocyte retrieval showed high variability between studies
(I2=98.6%), as well as no association between DHEA use and the
number of oocytes retrieved (SMD -0.01, CI 95% -0.16 to 0.13;
p<0.05).