Fig. 3.

Rates of and costs associated with all-cause hospitalizations during each year before index (N = 19,679 matched pairs). P < .01 for all comparisons, evaluated using McNemar's tests for proportions and Wilcoxon sign-rank test for continuous measures. Average per-patient costs (from Medicare perspective) were estimated among all patients within a cohort, including those with no hospitalization during the relevant year. Abbreviation: AD, Alzheimer's disease.