Table 2. The FA values of 46 study participants before and after HAART.

Region	Group	FA	95% CI	F	Pa
Frontal lobe_R	1	0.445±0.033	0.436–0.455	0.384	0.682
	2	0.451±0.036	0.440–0.461
	3	0.450±0.032	0.441–0.460
Frontal lobe_L	1	0.438±0.029	0.430–0.447	1.702	0.188
	2	0.430±0.021	0.423–0.436
	3	0.438±0.028	0.429–0.446
Temporal lobe_R	1	0.396±0.029	0.388–0.405	13.322	0.000
	2	0.426±0.037	0.415–0.437*
	3	0.434±0.041	0.422–0.447*
Temporal lobe_L	1	0.452±0.037	0.440–0.463	0.432	0.607
	2	0.447±0.050	0.432–0.462
	3	0.445±0.011	0.441–0.448
Parietal lobe_R	1	0.527±0.029	0.518–0.535	4.559	0.013
	2	0.536±0.030	0.527–0.545
	3	0.545±0.031	0.536–0.554
Parietal lobe_L	1	0.530±0.022	0.524–0.537	0.088	0.817
	2	0.531±0.016	0.526–0.536
	3	0.534±0.073	0.512–0.556
Occipital lobe_R	1	0.218±0.036	0.208–0.229	1.932	0.160
	2	0.207±0.037	0.196–0.218
	3	0.218±0.027	0.210–0.226
Occipital lobe_L	1	0.206±0.019	0.200–0.211	2.546	0.084
	2	0.202±0.024	0.195–0.209
	3	0.211±0.017	0.206–0.216
Genu of the corpus callosum	1	0.800±0.034	0.790–0.810	0.702	0.498
	2	0.799±0.035	0.789–0.810
	3	0.792±0.034	0.782–0.802
Splenium of the corpus callosum	1	0.856±0.094	0.828–0.884	1.530	0.224
	2	0.841±0.084	0.816–0.866
	3	0.867±0.016	0.862–0.872
Body of the corpus callosum_R	1	0.809±0.040	0.797–0.821	2.088	0.130
	2	0.794±0.038	0.783–0.805
	3	0.807±0.040	0.795–0.819
Body of the corpus callosum_L	1	0.818±0.375	0.706–0.929	0.197	0.822
	2	0.775±0.300	0.686–0.864
	3	0.809±0.347	0.706–0.913
Anterior limb of the internal capsule_R	1	0.614±0.035	0.604–0.625	1.510	0.226
	2	0.612±0.046	0.598–0.626
	3	0.626±0.041	0.614–0.638
Anterior limb of the internal capsule_L	1	0.615±0.089	0.588–0.641	0.883	0.369
	2	0.619±0.010	0.616–0.622
	3	0.630±0.038	0.619–0.642
Posterior limb of the internal capsule_R	1	0.712±0.029	0.703–0.721	1.299	0.278
	2	0.701±0.035	0.690–0.711
	3	0.707±0.036	0.697–0.718
Posterior limb of the internal capsule_L	1	0.724±0.024	0.717–0.731	0.031	0.970
	2	0.725±0.027	0.717–0.733
	3	0.725±0.021	0.719–0.731
Genu of the internal capsule_R	1	0.653±0.044	0.640–0.666	0.708	0.495
	2	0.641±0.042	0.629–0.654
	3	0.645±0.044	0.632–0.658
Genu of the internal capsule_L	1	0.656±0.039	0.644–0.667	0.365	0.695
	2	0.649±0.041	0.637–0.662
	3	0.650±0.040	0.638–0.662
Lenticular nucleus_R	1	0.233±0.026	0.225–0.241	26.254	0.000
	2	0.269±0.020	0.263–0.275*
	3	0.243±0.024	0.236–0.250#
Lenticular nucleus_L	1	0.242±0.114	0.208–0.276	0.019	0.964
	2	0.245±0.029	0.237–0.254
	3	0.245±0.099	0.216–0.275
Caudate nucleus_R	1	0.190±0.049	0.176–0.205	5.017	0.017
	2	0.170±0.022	0.163––0.176*
	3	0.186±0.017	0.181–0.191#
Caudate nucleus_L	1	0.201±0.024	0.194–0.208	7.113	0.001
	2	0.189±0.022	0.183–0.196
	3	0.183±0.020	0.178–0.189*
Dorsal thalamus_R	1	0.300±0.015	0.295–0.305	9.301	0.000
	2	0.304±0.014	0.300–0.308
	3	0.291±0.019	0.285–0.296*#
Dorsal thalamus_L	1	0.298±0.014	0.293–0.302	4.426	0.020
	2	0.289±0.009	0.287–0.292*
	3	0.290±0.019	0.285–0.296
Corona radiata_R	1	0.414±0.024	0.407–0.421	1.028	0.362
	2	0.419±0.018	0.414–0.424
	3	0.420±0.021	0.413–0.426
Corona radiata_L	1	0.431±0.071	0.410–0.452	0.082	0.899
	2	0.429±0.054	0.413–0.445
	3	0.427±0.022	0.420–0.433
Cerebral pedunculus_R	1	0.553±0.032	0.543–0.562	2.310	0.105
	2	0.538±0.036	0.527–0.549
	3	0.548±0.036	0.538–0.559
Cerebral pedunculus_L	1	0.538±0.017	0.532–0.543	1.901	0.174
	2	0.558±0.087	0.532–0.583
	3	0.542±0.008	0.539–0.544
Middle cerebellar peduncle_R	1	0.713±0.032	0.704–0.723	0.503	0.568
	2	0.663±0.285	0.578–0.747
	3	0.707±0.363	0.599–0.815
Middle cerebellar peduncle_L	1	0.724±0.045	0.711–0.738	2.580	0.081
	2	0.705±0.036	0.695–0.716
	3	0.717±0.046	0.703–0.731

Data are mean values ± standard deviation. P^a values for comparison among three groups (before HAART, after 6 months of HAART, and after 12 months of HAART). *, P<0.05 (compared with before HAART); ^#, P<0.05 (compared with 6 months of HAART). Group 1, without HAART; Group 2, after six months of HAART; Group 3, after 12 months of HAART. CI, confidence interval; FA, fractional anisotropy; HAART, highly active antiretroviral therapy; L, left; R, right.