Q1: Quartile 1 (0 – 0.27, n = 67); Q2: Quartile 2 (0.27 –
0.34, n = 69); Q3: Quartile 3 (0.34 – 0.47, n = 68); Q4: Quartile 4
(0.47– 1, n = 67); MLVI: Medication Level Variability Index; OR: Odds
ratio
When evaluating for a trend across quartiles, Cochran-Armitage test was
p = 0.12. Chi-square comparing the highest quartile to the rest of the cohort
(23.9% vs. 11.8%, respectively) yielded a p = 0.018.