Background Nutritional status of the older people is affected by various life-style factors. Although dietary habit is one of the life-style factors, it is unknown which of older home-care recipients’ dietary habits are associated with malnutrition. The purpose of this study was to examine the association of dietary variety, as an evaluation index for dietary habits, with malnutrition in Japanese older home-care recipients. Methods This cross-sectional study was conducted in a single city, Hyogo Prefecture, Japan between July and October 2016. Three hundred thirty-three community-dwelling older care recipients (aged 65 years or older who were receiving home-visit nursing care services) were enrolled. Their nutritional status (Mini Nutritional Assessment®-short form: MNA®-SF), dietary variety (Food frequency score [FFS]), socio-demographic characteristics (age, sex, marital status, etc.), health indicators (comorbidity [Charlson Comorbidity Index] and dysphagia status [Dysphagia Severity Scale]) were assessed. The participants were classified into two groups: malnourished (0–7 points) and non-malnourished (8–14 points), according to their MNA®-SF scores. Multivariate logistic regression analysis was used to examine the factors associated with malnutrition. Results A total of 317 participants were analyzed (118 men, 199 women, median age: 84 years). Compared to the fourth (highest) quartile of FFS, odds ratios (OR) (95% confidence intervals [CI]) of the third, second, and first (lowest) quartiles of FFS were 1.08 (0.42–2.80), 1.29 (0.56–2.98), and 2.30 (1.02–5.19), respectively (p for trend = 0.049). Higher Charlson Comorbidity Index score and the presence of dysphagia were also significantly associated with malnutrition (OR: 2.08, 95% CI: 1.08–4.00 and OR: 3.86, 95% CI: 2.08–7.17, respectively). Conclusion Lower dietary variety was significantly associated with malnutrition in Japanese older home-care recipients.

Background The dietary variety score (DVS), a simple dietary survey method for older adults, investigates the weekly frequency of consumption of the 10 food groups in Japan. The DVS is also associated with nutritional status. The original scoring method applied only to community‐dwelling older adults, not to older patients receiving home care, who have little dietary variety. Aim Using three different scoring methods for the DVS, we examined which method was most likely to reflect the nutritional status of older patients receiving home care. Methods This cross‐sectional study was carried out on older patients receiving home care. Participant characteristics, the DVS (evaluated using three different scoring methods), and the Mini Nutritional Assessment‐Short Form (MNA®‐SF) survey were researched. A receiver operating characteristic (ROC) analysis was performed to find the cut‐off value for the DVS. Multivariate analysis was performed, with malnutrition as the outcome, to investigate the extent to which the DVS is associated with malnutrition. Results We studied 317 participants. The DVS could produce significant ROC curves using modified scoring methods A and B (p = .028 and .042) with nutritional status as the outcome. Cut‐off value, sensitivity and specificity were 30 points, 60.9% and 55.9% in modified scoring method A and 5 points, 79.1%, and 35.6% in modified scoring method B. Results of the multivariate logistic regression analysis, in Model 1 dysphagia (odds ratio [95% confidence interval]: 3.85 [1.70–8.71]) and the DVS of modified scoring method A (2.00 [1.11–3.62]) were significant independent factors. In Model 2, dysphagia (3.57 [1.58–8.07]) and the DVS based on modified scoring method B (2.36 [1.24–4.47]) were significant independent factors. Conclusions Modified scoring method B was found to be most suitable for the dietary assessment of older patients receiving home care. Implications for practice Even in the absence of registered dietitians, any care staff member who is involved in providing nursing services during home‐visits is capable of administering a dietary survey, when using the easy DVS scoring method.

Objectives: Home-visit nutritional support services by registered dietitians for home-care patients are not popular due to a shortage of visiting registered dietitians. This study examined the effects of indirect nutritional intervention by a registered dietitian through visiting nurses in community-dwelling older home-care recipients. Design: A randomized, open-label, controlled clinical trial. Setting: Community. Participants: Thirty-four nutritionally at-risk older home-care recipients aged 65 years or older who were receiving home-visit nursing care services. Intervention: Dietary counseling promoting highly varied food intake provided by visiting nurses trained by a registered dietitian. Measurements: Nutritional status based on the Mini Nutritional Assessment-Short Form (MNA®-SF), dietary variety, anthropometric measurements, activities of daily living, and subjective diet-related quality of life were measured at baseline and after three months. Results: Nutritional status tended to improve in the intervention group (P = 0.087). Analysis of the changes of MNA®-SF item scores revealed significant improvement in “Appetite loss” (P = 0.046) and a trend toward improvement in “Weight loss” (P = 0.053) in the intervention group. Conclusion: Indirect nutritional intervention by a registered dietitian through visiting nurses was effective in improving the nutritional status of nutritionally at-risk older home-care recipients.