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Meta-analysis results for HIV-positive versus HIV-negative comparisons of fractional anisotropy and mean diffusivity. A, FA differences (SMD = −0.43; 95% CI, −0.65 to −0.21; test of SMD = 0: z = −3.82; P < .001). B, MD differences (SMD = +0.44; 95% CI, 0.15–0.72; test of SMD = 0: z = 3.00; P = .003).
