borderline significantP = 0.058
In contrast, although CA had no effect on brainstem remyelination in response to bexarotene (reduction by 0.01 pu/year, CI [−0.08, 0.09], P = 0.88), increasing baseline BA MRI was associated with a borderline significant decrement in brainstem remyelination (reduction by 0.06 pu/year in adjusted model, CI [0.00, 0.13], P = 0.058).