Table 1. Distribution of PMI by Sex.

Sex	Q1 (25th percentile)	Q2 (Median)	Q3 (75th percentile)	Mean ± SD
This table displays the distribution of PMI values among male and female patients in the cohort. Male participants had higher PMI values across all quartiles compared to female participants, with a median PMI of 5.94 cm²/m² (IQR: 4.89–7.23) and a mean ± SD of 5.97 ± 1.62 cm²/m². In contrast, females had a lower median PMI of 4.33 cm²/m² (IQR: 3.29–5.29) and a mean ± SD of 4.27 ± 1.45 cm²/m². These values reflect expected sex-based differences in skeletal muscle mass. PMI: psoas muscle index.
Male	4.89 cm2/m2	5.94 cm2/m2	7.23 cm2/m2	5.97 ± 1.62 cm2/m2
Female	3.29 cm2/m2	4.33 cm2/m2	5.29 cm2/m2	4.27 ± 1.45 cm2/m2