Table 2.

Statistical summaries of ¹H MRS metabolite ratios in the whole sample of PET/MRS study participants and in participants with low (<1.5) and high (≥1.5) PiB retention

Abbreviations: Cho = choline; CI = confidence interval; Cr = creatine; IQR = interquartile range, defined as the 25th and 75th percentiles; mI = myoinositol; MRS = magnetic resonance spectroscopy; NAA = N-acetylaspartate; PiB = ¹¹C-Pittsburgh compound B.

^ap Value from rank sum tests comparing participants with high and low PiB retention.