. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: J Magn Reson Imaging. 2016 May 18;44(6):1608–1618. doi: 10.1002/jmri.25308

Table 2. Mean (±standard deviation) of DTI-derived parameters over all participants for both scans at the 9-minute breakdown for white matter (WM) and gray matter (GM).

Results from Bland Altman are also listed, including the mean difference (± standard deviation), 95% confidence interval for the difference, the Bland Altman limit of agreement statistic, the normalized difference, and the Wilcoxon signed rank (WSR) p-value between the two scans.

FA	Scan 1	Scan2	Bland Altman				WSR

	mean±std	mean±std	difference (D)	95% CI	LOA	D_BA(%)	p
WM 6	0.73±0.05	0.74±0.07	−0.008	[−0.04, 0.02]	[−0.15, 0.13]	1.09	0.65
WM 15	0.68±0.05	0.68±0.07	−0.001	[−0.03, 0.03]	[−0.12, 0.12]	0.09	0.91
WM 32	0.69±0.04	0.66±0.10	0.036	[0.0, 0.07]	[−0.12, 0.19]	5.4	0.05
GM 6	0.61±0.07	0.62±0.06	−0.017	[−0.04, 0.01]	[−0.12, 0.09]	2.84	0.2
GM 15	0.55±0.08	0.54±0.08	0.013	[−0.01, 0.04]	[−0.10, 0.12]	2.43	0.41
GM 32	0.57±0.09	0.56±0.10	0.014	[−0.01, 0.04]	[−0.10, 0.13]	2.53	0.26
MD (μm²/ms)

WM 6	1.03±0.12	1.00±0.08	0.032	[−0.02, 0.08]	[−0.18, 0.24]	3.15	0.22
WM 15	1.00±0.07	0.97±0.06	0.022	[−0.01, 0.05]	[−0.11, 0.15]	2.28	0.28
WM 32	0.96±0.06	1.02±0.13	−0.053	[−0.11, 0.01]	[−0.31, 0.20]	5.3	0.11
GM 6	0.99±0.12	0.99±0.09	0.004	[−0.03, 0.04]	[−0.16, 0.17]	0.42	0.91
GM 15	0.94±0.06	0.94±0.07	0.001	[−0.04, 0.04]	[−0.16, 0.16]	0.07	0.94
GM 32	0.92±0.07	0.94±0.11	−0.022	[−0.08, 0.03]	[−0.26, 0.22]	2.34	0.55
AD (μm²/ms)

WM 6	2.11±0.27	2.06±0.17	0.052	[−0.02, 0.13]	[−0.27, 0.37]	2.48	0.39
WM 15	1.92±0.13	1.89±0.13	0.035	[−0.02, 0.09]	[−0.19, 0.26]	1.82	0.23
WM 32	1.89±0.12	1.91±0.10	−0.014	[−0.07, 0.04]	[−0.26, 0.23]	0.75	0.65
GM 6	1.79±0.23	1.79±0.20	−0.009	[−0.07, 0.05]	[−0.27, 0.25]	0.48	0.55
GM 15	1.62±0.13	1.59±0.12	0.029	[−0.05, 0.11]	[−0.30, 0.35]	1.83	0.53
GM 32	1.60±0.19	1.59±0.13	0.013	[−0.09, 0.11]	[−0.43, 0.45]	0.8	0.88
RD (μm²/ms)

WM 6	0.49±0.08	0.47±0.10	0.022	[−0.03, 0.08]	[−0.21, 0.26]	4.63	0.46
WM 15	0.53±0.08	0.52±0.10	0.016	[−0.03, 0.06]	[−0.17, 0.20]	3.1	0.41
WM 32	0.50±0.07	0.57±0.18	−0.07	[−0.14, 0.00]	[−0.38, 0.24]	13.36	0.09
GM 6	0.59±0.11	0.58±0.08	0.01	[−0.03, 0.05]	[−0.15, 0.18]	1.78	0.5
GM 15	0.61±0.10	0.62±0.10	−0.016	[−0.05, 0.2]	[−0.16, 0.12]	2.54	0.37
GM 32	0.57±0.08	0.61±0.15	−0.039	[−0.09, 0.01]	[−0.24, 0.17]	6.57	0.16