Texture-Modified Diets are Associated with Poor Appetite in Older Adults who are Admitted to a Post-Acute Rehabilitation Hospital

Abstract

Objective: This study aimed to clarify the association between texture-modified diets and poor appetite in older adults, as it is not fully understood.

Design: Cross-sectional study.

Setting and participants: We included 208 inpatients who were aged ≥65 years (mean age 78.9 ± 7.6 years, 57.7% female) and admitted to a rehabilitation unit with stroke, musculoskeletal disease, or hospital-associated deconditioning covered by the Japanese insurance system, between January 2019 and January 2020.

Methods: Participants were divided into 2 groups according to their food texture level: International Dysphagia Diet Standardization Initiative (IDDSI) levels 3 to 5 for the texture-modified diet group and levels 6 and 7 for the normal diet group. Appetite was assessed using the Simplified Nutritional Appetite Questionnaire for the Japanese elderly, and a score ≤14 was defined as poor appetite. The relationship between IDDSI levels and poor appetite was analyzed using the Cochrane-Armitage trend test. Logistic regression analysis was used to investigate the relationship between the consumption of texture-modified diets and poor appetite. Statistical significance was set at P < .05.

Results: The numbers of participants on modified diets according to the IDDSI framework were as follows: 4, 11, 41, 76, and 76 in levels 3, 4, 5, 6, and 7, respectively. In total, 152 and 56 patients were classified into the regular diet group and texture-modified diet group, respectively. A significantly higher prevalence of poor appetite was observed with the consumption of texture-modified diets (P < .001 for trend). Logistic regression analysis showed that poor appetite was independently associated with the consumption of texture-modified diets (odds ratio 3.443, P = .011).

Conclusions and implications: These findings indicate that the consumption of texture-modified diets is associated with poor appetite. Further studies are required to verify whether a multimodal approach involving improvement in the appearance, taste, flavor, and nutrients of the food can improve poor appetite.

Keywords: Anorexia of aging; IDDSI; dysphagia; malnutrition; texture-modified food.