a weak trendp = .11
The between cohort difference in PSV CBF was not significant ( p = .34) and there was a weak trend ( p = .11) of higher variance in the CARDIA cohort compared to the ADC cohort. 3.6 Comparison of sensitivities between the two ASL methods The TSNR (reported as median (interquartile range) because of its right skewed distribution) in the PSV ROI for the CARDIA cohort was 0.34 (0.27), which was about 12.5 times lower than in the ADC cohort with TSNR value of 4.25 (3.36).