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. Author manuscript; available in PMC: 2021 May 26.
Published in final edited form as: Pharmacotherapy. 2021 Mar 16;41(5):430–439. doi: 10.1002/phar.2516

TABLE 3.

Evaluation of delayed MTX elimination, acute kidney injury, and hospital length of stay in lymphoma patients receiving HDMTX with or without concomitant levetiracetam

Levetiracetam N = 349 administrations No levetiracetam N = 1614 administrations OR (95% CI) p-Value
MTX level at 48 h, μmol/L, median (IQR) 0.31 (0.18, 0.59) 0.37 (0.18, 0.79) NA 0.54
Patients with 48 h MTX level >1 μmol/L, no. (%) 49 (14.0%) 261 (16.2%) 0.80 (0.47–1.34) 0.39
Patients with AKI, no. (%)
 No AKI 323 (85.4) 1326 (83.0) 0.83 (0.52–1.33) 0.28
 Stage I 38 (10.1) 204 (12.8)
 Stage II 12 (3.2) 54 (3.4)
 Stage III 5 (1.3) 13 (0.8)
LOS, days, median (IQR)a 4.2 (3.9, 6.1) 4.1 (3.8, 5.8) NA 0.039

Abbreviations: AKI, acute kidney injury; CI, confidence interval IQR, interquartile range; LOS, length of stay; MTX, methotrexate.

a

Excluding patients who received multiple HDMTX administrations in a single hospitalization.