Sample size was determined on the basis of information derived from a similar study.17 considering a confidence level of %95, Z=1.96, SD=14.4, Mean=41.7, 184 samples were calculated. The participants were elderly people who were living in the community and come to the daily care center (not resident in health care centers) in Tabriz city. They were voluntarily to take part in the study. There were two daily care centers where we recruited randomly samples there.