Blood urea nitrogen to creatinine ratio is associated with physical frailty in older-aged Chinese: a cross-sectional study

[21] Barreto EF(2017)A systematic review of balance and fall risk assessments with mobile phone technology Arch Gerontol Geriatr 73 300-206

[22] Poyant JO(2020)Asian Working Group for Sarcopenia: 2019 consensus update on sarcopenia diagnosis and treatment J Am Med Dir Assoc 21 16-309

[23] Coville HH(2019)Sarcopenia: revised European consensus on definition and diagnosis Age Ageing 48 202-1815

[24] Dierkhising RA(2021)High neutrophil to lymphocytes ratio is associated with sarcopenia risk in hospitalized cancer patients Clin Nutr 40 302-935

[25] Kennedy CC(2019)The ratio serum creatinine/serum cystatin C (a surrogate marker of muscle mass) as a predictor of hospitalization in chronic obstructive pulmonary disease outpatients Respiration 97 625417-1213

[26] Gajic O(2021)Serum creatinine as a potential biomarker of skeletal muscle atrophy in non-small cell lung cancer patients Front Physiol 12 1813-82

[27] Marzetti E(2019)The urea-creatinine ratio as a novel biomarker of critical illness-associated catabolism Intensive Care Med 45 926-undefined

[28] Picca A(2022)High blood urea nitrogen to creatinine ratio is associated with increased risk of sarcopenia in patients with chronic obstructive pulmonary disease Exp Gerontol 169 1107-undefined

[29] Marini F(2018)Metabolic phenotype of skeletal muscle in early critical illness Thorax 73 E305-undefined

[30] Biancolillo A(2000)Creatine and creatinine metabolism Physiol Rev 80 73-undefined

[21] Barreto EF(2017)A systematic review of balance and fall risk assessments with mobile phone technology Arch Gerontol Geriatr 73 300-206

[22] Poyant JO(2020)Asian Working Group for Sarcopenia: 2019 consensus update on sarcopenia diagnosis and treatment J Am Med Dir Assoc 21 16-309

[23] Coville HH(2019)Sarcopenia: revised European consensus on definition and diagnosis Age Ageing 48 202-1815

[24] Dierkhising RA(2021)High neutrophil to lymphocytes ratio is associated with sarcopenia risk in hospitalized cancer patients Clin Nutr 40 302-935

[25] Kennedy CC(2019)The ratio serum creatinine/serum cystatin C (a surrogate marker of muscle mass) as a predictor of hospitalization in chronic obstructive pulmonary disease outpatients Respiration 97 625417-1213

[26] Gajic O(2021)Serum creatinine as a potential biomarker of skeletal muscle atrophy in non-small cell lung cancer patients Front Physiol 12 1813-82

[27] Marzetti E(2019)The urea-creatinine ratio as a novel biomarker of critical illness-associated catabolism Intensive Care Med 45 926-undefined

[28] Picca A(2022)High blood urea nitrogen to creatinine ratio is associated with increased risk of sarcopenia in patients with chronic obstructive pulmonary disease Exp Gerontol 169 1107-undefined

[29] Marini F(2018)Metabolic phenotype of skeletal muscle in early critical illness Thorax 73 E305-undefined

[30] Biancolillo A(2000)Creatine and creatinine metabolism Physiol Rev 80 73-undefined