Proportions of patients developing PICC occlusions stratified by lumen number and antibiotic. Error bars represent the standard errors. PEN, penicillin G; CLOX, cloxacillin; PIP, piperacillin-tazobactam; ERT, ertapenem; VAN, vancomycin; CFZ, cefazolin; MER, meropenem; CTX, ceftriaxone; CTZ, ceftazidime; AMP, ampicillin.