knockout: 5 mice, 482 axons; mean g-ratio 0.713; median axon diameter 0.79 um
wild-type: 5 mice, 550 axons; mean g-ratio 0.712; median axon diameter 0.78 um
A. Axons as n (482 vs 550), Welch t-test on g-ratio: difference 0.001, p = 0.58
B. Regression of g-ratio on genotype and axon diameter, axons as n: genotype difference -0.002, p = 0.25
C. Mice as n, mean g-ratio per mouse (5 vs 5), Welch t-test: difference 0.001 (95% CI -0.024 to 0.026), p = 0.91
D. Mice as n, each mouse's g-ratio at 1 um axon diameter (5 vs 5), Welch t-test: difference -0.003 (95% CI -0.028 to 0.022), p = 0.79