151751-Najiba-Chargi

83 Diagnostics: cut-off values for low skeletal muscle mass CUT-OFF VALUES FOR SMM Table 3 and 4 shows the mean with corresponding standard deviations (SD) of SMA and CSMI at the level of C3. Gender and BMI specific cut-off values were calculated based on mean -2SD as suggested by the EWGSOP2. 1 For male patients with a BMI <25 kg/m 2 , a CSMI ≤6.8 cm 2 /m 2 was defined and with a BMI ≥ 25 kg/m 2 a CSMI ≤8.5 cm 2 /m 2 was defined for low SMM. For female patients with a BMI <25 kg/m 2 , a CSMI ≤5.3 cm 2 /m 2 was defined and with a BMI ≥ 25 kg/m 2 a CSMI ≤6.4 cm 2 /m 2 was defined for low SMM. Table 3. Cut-off SMA values and gender- and BMI specific cut-off values for low SMA (cm 2 ) Male N = 988 Cut-off mean -2 SD (cm 2 ) Female N = 427 Cut-off mean -2 SD (cm 2 ) BMI < 25 kg/m 2 N (%) M (SD) 567 (57.4) 36.6 (7.3) ≤ 22 271 (63.5) 26.9 (5.9) ≤ 15.1 BMI ≥ 25 kg/m 2 N (%) M (SD) 421 (42.6) 43.1 (8.1) ≤ 26.9 156 (36.5) 31.5 (7.3) ≤ 16.9 Legend: BMI: body mass index, N: number of patients, M: mean, SD: standard deviation SMA: skeletal muscle mass area Table 4. Cut-off CSMI values and gender- and BMI-specific cut-off values for low CSMI (cm 2 /m 2 ) Male N = 988 Cut-off mean -2 SD (cm 2 /m 2 ) Female N = 427 Cut-off mean -2 SD (cm 2 /m 2 ) BMI < 25 kg/m 2 N (%) M (SD) 567 (57.4) 11.8 (2.5) ≤ 6.8 271 (63.5) 9.7 (2.2) ≤ 5.3 BMI ≥ 25 kg/m 2 N (%) M (SD) 421 (42.6) 13.7 (2.6) ≤ 8.5 156 (36.5) 11.4 (2.5) ≤ 6.4 Legend: BMI: body mass index, N: number of patients, M: mean, SD: standard deviation CSMI: skeletal muscle mass index 5