Immortal time bias and reverse causality in retrospective analysis: Comment on "effect of cumulative bortezomib dose on survival in multiple myeloma patients receiving bortezomib-melphalan-prednisone in the phase III VISTA study"

Am J Hematol. 2015 Aug;90(8):E146. doi: 10.1002/ajh.24043. Epub 2015 May 28.

Pei-Ying Hsieh¹, Chia-Jen Liu^{2

3

4}, Chung-Jen Teng^{1

2

3}

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.
⁴ Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.

No abstract available

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