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Geriatric Nutritional Risk Index for independent walking function in maintenance hemodialysis patients: A single-facility retrospective cohort study.
Geriatrics & Gerontology International 2018 October 12
AIM: The target Geriatric Nutritional Risk Index (GNRI) for patients on chronic maintenance hemodialysis is unclear. We aimed to determine the relationship between the GNRI and independent walking ability in such patients.
METHODS: In the present retrospective cohort study, 90 patients receiving chronic maintenance hemodialysis were included. Logistic regression analyses were carried out to evaluate the relationship between the GNRI and independent walking ability. Receiver operating characteristic curve analysis was carried out to determine the cut-off GNRI for predicting independent walking ability.
RESULTS: Multivariate logistic regression analysis showed significant differences in age (odds ratio [OR] 0.8, 95% confidence interval [CI] 0.6-0.9), creatinine generation rate percentage (OR 1.1, 95% CI 1.0-1.2), GNRI (OR 1.4, 95% CI 1.1-1.8; P < 0.01) and urea removal rate (OR 0.3, 95% CI 0.1-0.9; P < 0.05). The cut-off GNRI for independent walking ability was 86.7 (area under the curve 0.80, sensitivity 92.1%, specificity 66.7%, positive hit ratio 86.6%, negative hit ratio 78.3%). The factors correlated with survival in the univariate analysis were the GNRI, equilibrated Kt/V, urea removal rate, clear space rate, salt intake amount (P < 0.01), number of days of hospitalization and %creatinine generation rate (P < 0.05). The Cox proportional hazard regression model showed an OR of 0.77 (95% CI 0.32-1.8) at a GNRI <86/GNRI ≥86. In the multivariate survival analysis, we observed no significant differences in any of the factors.
CONCLUSIONS: GNRI was correlated with walking ability, which indicated that GNRI might predict future walking ability; also, a GNRI of 87 might be the target for maintaining walking ability. Geriatr Gerontol Int 2018; ••: ••-••.
METHODS: In the present retrospective cohort study, 90 patients receiving chronic maintenance hemodialysis were included. Logistic regression analyses were carried out to evaluate the relationship between the GNRI and independent walking ability. Receiver operating characteristic curve analysis was carried out to determine the cut-off GNRI for predicting independent walking ability.
RESULTS: Multivariate logistic regression analysis showed significant differences in age (odds ratio [OR] 0.8, 95% confidence interval [CI] 0.6-0.9), creatinine generation rate percentage (OR 1.1, 95% CI 1.0-1.2), GNRI (OR 1.4, 95% CI 1.1-1.8; P < 0.01) and urea removal rate (OR 0.3, 95% CI 0.1-0.9; P < 0.05). The cut-off GNRI for independent walking ability was 86.7 (area under the curve 0.80, sensitivity 92.1%, specificity 66.7%, positive hit ratio 86.6%, negative hit ratio 78.3%). The factors correlated with survival in the univariate analysis were the GNRI, equilibrated Kt/V, urea removal rate, clear space rate, salt intake amount (P < 0.01), number of days of hospitalization and %creatinine generation rate (P < 0.05). The Cox proportional hazard regression model showed an OR of 0.77 (95% CI 0.32-1.8) at a GNRI <86/GNRI ≥86. In the multivariate survival analysis, we observed no significant differences in any of the factors.
CONCLUSIONS: GNRI was correlated with walking ability, which indicated that GNRI might predict future walking ability; also, a GNRI of 87 might be the target for maintaining walking ability. Geriatr Gerontol Int 2018; ••: ••-••.
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