Fig. 3
a Kaplan–Meier survival curves stratified by the cross-sectional area of pectoralis, intercostalis, paraspinals, serratus, and latissimus muscles at the T4 level in male and female patients . The cutoff value corresponds to the lowest quantile of the cross-sectional area of muscle at the T4 level/height2 (T4 muscle index, T4MI) (Male: T4MI = 32.53 cm2/m2, n = 108/35 respectively / Female: T4MI = 24.25 cm2/m2, n = 28 / 9 respectively). b Kaplan–Meier survival curves stratified by the cross-sectional area of the erector spinae muscles at the T12 level in male and female patients. The cutoff value corresponds to the lowest quantile of the cross-sectional area of erector spinae muscle/height2 (T12 muscle index, T12MI). (Male: T12MI = 8.67 cm2/m2, n = 104/35 respectively / Female: T12MI = 7.13 cm2/m2, n = 28 / 9 respectively)