Subgroup analysis of the EVAR patients showed a trend towards increased mortality in patients with low PMA/PMI, though this was non-significant (HR 1.86, 95% CI 1.00–3.43; p = 0.05).
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The relationship between pre-operative psoas and skeletal muscle parameters and survival following endovascular aneurysm repair: a systematic review and meta-analysis.
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The sentences
There may be significant variation in the utility of PMI or SMI as a prognostic marker.