Immortal time bias in retrospective analysis: comment on 'Efficacy and safety of long-term treatment with lenalidomide and dexamethasone in patients with relapsed/refractory multiple myeloma'.
Division of Oncology and Hematology, Department of Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
P-Y
PY
Hsieh
1] School of Medicine, National Yang-Ming University, Taipei, Taiwan [2] Institute of Public Health, National Yang-Ming University, Taipei, Taiwan [3] Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
C-J
CJ
Liu
1] Division of Oncology and Hematology, Department of Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan [2] School of Medicine, National Yang-Ming University, Taipei, Taiwan [3] Institute of Public Health, National Yang-Ming University, Taipei, Taiwan.
C-J
CJ
Teng
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008297:Male; D009101:Multiple Myeloma / Q000188:drug therapy*