Response to Letters to the Editors: 1. More details on the database used by the study should be provided. 2. Mediclaim Hospital Discharge System and income levels of cohort

Affiliations

¹ Duke-NUS Graduate Medical School Singapore, Singapore; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore. Electronic address: katyccc@hotmail.com.
² Epidemiology & Disease Control Division, Ministry of Health, Singapore.
³ Duke-NUS Graduate Medical School Singapore, Singapore.
⁴ Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA.
⁵ Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
⁶ Duke-NUS Graduate Medical School Singapore, Singapore; Saw Swee Hock School of Public Health, National University of Singapore, Singapore. Electronic address: woonpuay.koh@duke-nus.edu.sg.

Free article

Comment

Y-Y Leung et al. Osteoarthritis Cartilage. 2015 Mar.

Free article

. 2015 Mar;23(3):499-500.

doi: 10.1016/j.joca.2014.12.006. Epub 2014 Dec 11.

¹ Duke-NUS Graduate Medical School Singapore, Singapore; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore. Electronic address: katyccc@hotmail.com.
² Epidemiology & Disease Control Division, Ministry of Health, Singapore.
³ Duke-NUS Graduate Medical School Singapore, Singapore.
⁴ Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA.
⁵ Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
⁶ Duke-NUS Graduate Medical School Singapore, Singapore; Saw Swee Hock School of Public Health, National University of Singapore, Singapore. Electronic address: woonpuay.koh@duke-nus.edu.sg.

No abstract available

Keywords: MediClaim Database; Singapore; Socioeconomic status; Total knee replacement.

Comment on

Cigarette smoking and risk of total knee replacement for severe osteoarthritis among Chinese in Singapore--the Singapore Chinese health study.
Leung YY, Ang LW, Thumboo J, Wang R, Yuan JM, Koh WP. Leung YY, et al. Osteoarthritis Cartilage. 2014 Jun;22(6):764-70. doi: 10.1016/j.joca.2014.03.013. Epub 2014 Mar 28. Osteoarthritis Cartilage. 2014. PMID: 24680935 Free PMC article.
Association between body mass index and risk of total knee replacement, the Singapore Chinese Health Study.
Leung YY, Allen JC Jr, Noviani M, Ang LW, Wang R, Yuan JM, Koh WP. Leung YY, et al. Osteoarthritis Cartilage. 2015 Jan;23(1):41-7. doi: 10.1016/j.joca.2014.10.011. Epub 2014 Oct 29. Osteoarthritis Cartilage. 2015. PMID: 25450848 Free PMC article.
More details on the database used in the study should be provided.
Chua SJ, Li J. Chua SJ, et al. Osteoarthritis Cartilage. 2015 Mar;23(3):497. doi: 10.1016/j.joca.2014.11.025. Epub 2014 Dec 11. Osteoarthritis Cartilage. 2015. PMID: 25497865 No abstract available.
Mediclaim Hospital Discharge System and income levels of cohort.
Chua SJ, Li J. Chua SJ, et al. Osteoarthritis Cartilage. 2015 Mar;23(3):498. doi: 10.1016/j.joca.2014.11.024. Epub 2014 Dec 11. Osteoarthritis Cartilage. 2015. PMID: 25497866 No abstract available.