Drs. Dai and Felson reply

Zhaoli Dai, David T. Felson

Research output: Contribution to journalLetterpeer-review


To the Editor:
We appreciate the interest and comments by Yang and Hung in our recent publication, “Sleep Quality Is Related to Worsening Knee Pain in Those with Widespread Pain: The Multicenter Osteoarthritis Study” . Yang and Hung raised 3 issues about potential biases in the methodology in our study around (1) the assessment methods used for sleep quality, (2) confounding factors such as other pain medication used, and (3) the appropriateness of causality in the study conclusion...
Original languageEnglish
Pages (from-to)303
Number of pages1
JournalThe Journal of rheumatology
Issue number2
Publication statusPublished - 1 Feb 2021
Externally publishedYes


  • Rheumatology
  • Osteoarthritis
  • Sleep Quality
  • Knee pain


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