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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Magn Reson Med. 2019 Feb 8;81(6):3567–3577. doi: 10.1002/mrm.27669

Table 1.

Linear regression results. For each analysis, the slope and intercept of the linear regression, its r2 value, P-value, and 95% confidence intervals (CI) of the slope and intercept are reported.

Comparison Linear regression r2 P CIslope CIintercept
qCBF MRI vs Spheres
Hemispheric		 y = 0.93x + 3.85 0.96 < 0.001 [0.84, 1.02] [−6.9, 14.6]
qCBF MRI vs Spheres Regional y = 0.90x + 7.11 0.82 < 0.001 [0.83, 0.96] [−0.64, 14.9]
CVR MRI vs Spheres
Hemispheric		 y = 1.17x – 0.95 0.84 < 0.001 [0.76, 1.59] [−4.74, 2.85]
CVR MRI vs Spheres
Regional		 y = 1.03x – 0.04 0.61 < 0.001 [0.85, 1.21] [−1.48, 1.55]
qCBF MRI vs PaCO2 y = 2.73x – 67.6 0.70 0.002 [1.29, 4.18] [−158, 22.8]
qCBF Spheres vs PaCO2 y = 2.91x – 74.8 0.72 0.002 [1.42, 4.41] [−168 18.7]
qCBF MRI vs Spheres
Hemispheric; MCAO		 y = 0.80x + 12.9 0.82 0.002 [0.43, 1.16] [−26.8, 52.7]
qCBF MRI vs Spheres Regional;
MCAO		 y = 0.74x + 19.3 0.54 < 0.001 [0.56, 0.92] [−1.4, 40]
qCBF MRI vs Spheres
Hemispheric; MCAO; DD corr		 y = 0.97x + 2.58 0.96 < 0.001 [0.78, 1.17] [−18.2, 23.4]
qCBF MRI vs Spheres Regional;
MCAO; DD corr		 y = 0.93x + 5.93 0.55 < 0.001 [0.70, 1.15] [−19.8, 31.7]

MCAO – middle cerebral artery occlusion; DD corr – delay and dispersion correction