RCTs with a sample size of >300 showed a reduction of UVAI (mean ES [95% CI]: −0.26 [−0.34, −0.09], k = 7), but those with a sample size of ≤300 did not reach statistical significance (mean ES [95% CI]: −0.16 [−0.34, 0.02], k = 11).
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Sexual risk reduction for HIV-infected persons: a meta-analytic review of "positive prevention" randomized clinical trials.
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