*length of stay
        Mills, W. L., Ying, J., Kunik, M. E. 2019. Identifying potential long-stay residents in veterans health administration nursing homes. Geriatr Nurs.  40 (1) 51-55.  
          Ismail, Z., Arenovich, T., Granger, R., Grieve, C., Willett, P., Patten, S., Mulsant, B. H. 2015. Associations of medical comorbidity, psychosis, pain, and capacity with psychiatric hospital length of stay in geriatric inpatients with and without dementia. International Psychogeriatrics.  27 (2) 313-321.