“…12 programs used quantitative methods, including a number of randomized clinical trials, 18,19,24,26,37,40,42,50,52,53,77,79 four programs used qualitative methods 12,13,20,25 and two programs did not specify the type of evaluation used 23,31 . Of those that reported a focus on particular outcomes, patient satisfaction, 12,13,20,31 follow-up and referral rates, 25,40,79 ED and hospital costs and length of stay, 19,42,77 subsequent ED visits, 26,37 medical complications, 50,52 mental health , 18,23,24 and malnutrition 53 in the hospital were all reported to be positively affected by volunteers in the ED. Many of the evaluations of programs took the form of surveys and questionnaires from the perspectives of patients and hospital staff.…”