Prevalence of DDIs
At least one DDI was detected in 58% of patients and at least one category 1 DDI was detected in 47.3% of patients. Further screening by Lexicomp® indicated that 16.3% of patients had a clinically relevant DDI and 13% of patients had a DDI that was detected by the EMR(Table 2) .
Compared with KTH, fewer patients at MM had a DDI (58% vs. 95%,p < 0.01) and nominally fewer patients had a category 1 DDI (47% vs. 65%), though the difference was not statistically significant (p > 0.05). At MM, 1.57 DDIs per patient were observed while at KTH 3.09 DDIs per patient were observed.