title: Vitamin D and the characteristics associated with risk for knee pain among Korean older adults: Findings from a nationally representative survey.
abstract: OBJECTIVE
  To explore vitamin D and the risk factors associated with knee pain in a representative population of Korean older adults METHODS: Data were analyzed from the Korean National Health and Nutrition Examination Survey (2010-2013). A total of 3874 participants (1728 men, 2146 women) aged 65 years and older who had a measured serum 25-hydroxyvitamin D level were evaluated. Multivariate logistic regression was used to investigate the relationship between serum vitamin D and knee pain severity RESULTS: Sex, age, obesity, education, knee radiographic osteoarthritis, hip pain and back pain were associated with having knee pain. Also, the level of serum 25-hydroxyvitamin D was not significantly associated with knee pain severity. After controlling for confounding factors, the level of serum 25-hydroxyvitamin D was not significantly associated with knee pain, and severity levels of mild, moderate and severe.
  
  
  CONCLUSIONS
  The results show that the serum vitamin D did not have a significant effect on knee pain in older adults in Korea. Geriatr Gerontol Int 2017; 17: 1278-1285.
authors.affiliation: College of Nursing, The Catholic University of Korea, Seoul, Korea.
authors.forename: Ari
authors.initials: A
authors.lastname: Lee
authors.affiliation: College of Nursing, The Catholic University of Korea, Seoul, Korea.
authors.forename: Jong-Eun
authors.initials: JE
authors.lastname: Lee
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D009749:Nutrition Surveys; D020370:Osteoarthritis, Knee / Q000097:blood* / Q000453:epidemiology*; D010147:Pain Measurement; D015995:Prevalence; D056910:Republic of Korea / Q000453:epidemiology; D012307:Risk Factors; D012720:Severity of Illness Index; D014807:Vitamin D / Q000097:blood*
chemical_list: D014807:Vitamin D
keywords: knee pain; older adults; vitamin D