Correction to: Development of a Japanese version of the SARC-F for diabetic patients: an examination of reliability and validity.

The article Development of a Japanese version of the SARC-F for diabetic patients: an examination of reliability and validity, written by Satoshi Ida, Kazuya Murata, Daiki Nakadachi, Yuki Ishihara, Kanako Imataka, Akihiro Uchida, Kou Monguchi, Ryutaro Kaneko, Ryoko Fujiwara and Hiroka Takahashi was originally published electronically on the publisher's internet portal (currently SpringerLink) on 10 November 2016 without open access.

Association between dynapenia and decline in higher-level functional capacity in older men with diabetes.

AIM: The present study aimed to investigate an association between dynapenia or sarcopenia and higher-level functional capacity in older diabetes patients. METHODS: Diabetes outpatients aged ≥65 years were prospectively enrolled. Dynapenia and sarcopenia were defined by criteria of the Asian Working Group for Sarcopenia, and higher-level functional capacity was assessed using the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC). Multiple regression analysis included TMIG-IC scores as the dependent variable and dynapenia or sarcopenia as the explanatory variables. RESULTS: The present study included 204 patients. The regression coefficient of the relationship between dynapenia and covariance-adjusted TMIG-IC in men was -1.26 (95% confidence interval -2.35 to -0.17, P = 0.024), and that of sarcopenia and TMIG-CI adjusted for covariates was 0.65 (95% confidence interval -1.26 to 2.58, P = 0.500). We observed no significant correlation between TMIG-IC scores and dynapenia or sarcopenia in women. CONCLUSIONS: A statistically significant association was found between dynapenia and decline of higher-level functional capacity in older men with diabetes. Geriatr Gerontol Int 2018; 18: 1393-1397.

Development of a Japanese version of the SARC-F for diabetic patients: an examination of reliability and validity.

BACKGROUND: SARC-F is a 5-item, self-administered questionnaire developed to screen sarcopenia. To date, no Japanese version of the SARC-F has been developed. AIMS: To create a Japanese version of the SARC-F (SARC-F-J), a questionnaire for diabetic patients, and to investigate its reliability and validity. METHODS: This was a cross-sectional study. A Japanese translation of the SARC-F was created and revised, and the authors of the original version of the SARC-F verified the back-translation. The questionnaire was tested in diabetic outpatients aged ≥65 years who had received treatment at our hospital. After 14 weeks, the kappa coefficient was used to evaluate the retest reliability. Using the diagnostic criteria for sarcopenia based on the European Working Group on Sarcopenia in Older People as the reference standard, we calculated the sensitivity, specificity, positive predictive value, and negative predictive value of the SARC-F-J. RESULTS: The study comprised 207 patients (men, 60.8%; women, 39.2%). The kappa coefficient was 0.66. For men and women, the sensitivities were 14.6 and 33.3%, specificities were 85.8 and 72.4%, positive predictive values were 33.3 and 17.3%, and negative predictive values were 65.7 and 86.2%, respectively. DISCUSSION: The probability of identifying the condition is considered high when patients are diagnosed with sarcopenia using SARC-F-J. CONCLUSIONS: The retest reliability of SARC-F-J was regarded to be good. When EWGSOP was assumed as a reference, the specificity of SARC-F-J was high. Because the sensitivity was low, patients with sarcopenia could not be screened, and hence, attention is needed.