RT Journal
A1 Leveille SG, Kiely DK, Kiel DP
T1 CHronic pain and risk of falls in older adults—reply
JF JAMA
JO JAMA
YR 2010
FD March 24
VO 303
IS 12
SP 1147
OP 1149
DO 10.1001/jama.2010.325
UL http://dx.doi.org/10.1001/jama.2010.325
AB 
Alternatively, to assess for potential confounding of the relationship between pain and falls by vitamin D deficiency, we conducted a set of analyses examining the association between the use of vitamin D supplements or multivitamin supplements and pain, and we reanalyzed our original data with additional adjustment for the use of vitamin D supplements or multivitamin supplements. For both vitamin D and multivitamin supplements, we looked at any use in the 2 weeks before baseline and also regular supplement use (≥5 d/wk).