A search of PubMed: (diabetes OR diabetic) AND inpatients AND (diet OR food service) AND patient satisfaction
retrieved the following study comparing use of the two diet plans for diabetic inpatients
Curll M, et al. Menu selection, glycaemic control and satisfaction with standard and patient-controlled consistent carbohydrate meal plans in hospitalised patients with diabetes. Qual Saf Health Care. 2010 Aug;19(4):355-9.
This is a comparative study; the abstract does not indicate whether or not patients are randomized. Compares levels of patient satisfaction, rates of hypoglycemia, and level of clinician oversight.
Using the related articles feature in PubMed retrieved these additional papers:
Bhattacharyya A, et al. In-patient management of diabetes mellitus and patient satisfaction. Diabet Med. 2002 May;19(5):412-6. Erratum in: Diabet Med. 2002 Sep;19(9):797.
Gosmanov AR, Umpierrez GE. Medical nutrition therapy in hospitalized patients with diabetes. Curr Diab Rep. 2012 Feb;12(1):93-100. doi: 10.1007/s11892-011-0236-5. Review
Swift CS, Boucher JL. Nutrition therapy for the hospitalized patient with diabetes.
Endocr Pract. 2006 Jul-Aug;12 Suppl 3:61-7.
Curll M, et al. Menu selection, glycaemic control and satisfaction with standard and patient-controlled consistent carbohydrate meal plans in hospitalised patients with diabetes. Qual Saf Health Care. 2010 Aug;19(4):355-9. doi: 10.1136/qshc.2008.027441.