The purpose of this study was to compare the sensitivity and specificity of the Geriatric Nutritional Risk Index (GNRI), Mini Nutritional Assessment Scale-Short Form (mNA-SF) and Systemic Immune-Inflammatory Index (SII) values calculated in the preoperative evaluation in patients over 65 years of age who underwent gastrointestinal surgery, in predicting morbidity and mortality in the postoperative period.
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Systemic Immune-Inflammation Index (SII)
Timeframe: Preoperative (Baseline)
Geriatric Nutritional Risk Index (GNRI) as a predictor of postoperative complications
Timeframe: Preoperative (Baseline)
Mini Nutritional Assessment-Short Form (mNA-SF) score
Timeframe: Preoperative (Baseline)