Table 1:
Characteristic of included studies in meta-analysis
| Author | Year | Province | Sex | Resident | Sample Size | Habitat | Age |
|---|---|---|---|---|---|---|---|
| Ahangari | 2007 | Tehran | Male/Female | Nursing Home | 523 | City | 68.08 |
| Panaghi | 2010 | Tehran | Male/Female | Nursing Home/Home | 243 | City | 71.41 |
| Hasani | 2011 | Tehran | Male/Female | Nursing Home | 130 | City/Rural | 73.19 |
| Khoosheh Mehri | 2005 | Alborz | Male/Female | Nursing Home | 62 | City | Not reported |
| Amirhosseini | 2015 | Tehran | Male/Female | Nursing Home/Home | 408 | City/Rural | Not reported |
| Payahoo | 2013 | Tabriz | Male/Female | Home | 184 | City | 69.4 |
| Zaeri | 2014 | Tehran | Male/Female | Home | 287 | City | 67.3 |