Pretreatment nutritional status is associated with quality of life in patients with gastric cancer: a cross-sectional study from Iran

Malnutrition Diagnosed by Patient-Generated Subjective Global Assessment and the Risk of All-Cause Mortality in Adults With Gastrointestinal Cancer: A Systematic Review and Meta-Analysis

INTRODUCTION

Several reviews have highlighted that the Patient-Generated Subjective Global Assessment (PG-SGA) is the best diagnostic tool for assessing nutritional status in cancer patients. However, previous meta-analyses summarizing the prevalence of malnutrition and overall survival in patients with gastrointestinal (GI) cancer are quite limited. This study aims to determine the overall prevalence and association between malnutrition, as defined by the PG-SGA, and mortality in adults with GI cancer.

METHODS

A comprehensive systematic review of articles published from 2005 to 2023 was conducted using Google Scholar, PubMed, Web of Sciences and Scopus. The PRISMA guideline was followed to organize the entire content. A random-effects meta-analysis model using R Studio was performed to quantify the pooled proportion and hazard ratios (HRs). Publication bias was assessed using Egger's test and funnel plots. Heterogeneity was evaluated using I2 and Baujat plots. This study was registered in PROSPERO under the protocol number CRD42023465685.

RESULTS

In this study, 46 publications with 23,235 participants were included in the final meta-analysis. The overall prevalence of malnutrition among adults with GI cancer, as determined by the PG-SGA, was 61% (95% CI: 51%-70%, I2 = 99%). The pooled prevalence of moderate and severe malnutrition were 38% (95% CI: 31%-45%, I2 = 96%) and 21% (95% CI: 13%-31%, I2 = 98%), respectively. By cancer type, malnutrition was more common in patients with oesophageal cancer (78%, 95% CI: 45%-94%, I2 = 99%) and gastric cancer (75%, 95% CI: 68%-81%, I2 = 87%). Additionally, the overall risk (pooled HR) of malnutrition on mortality among GI cancer patients was 2.02 (95% CI: 1.63%-2.5%, I2 = 23%).

CONCLUSION

Malnutrition is common in adults with GI cancer and doubles the risk of all-cause mortality. These results emphasize the importance of ongoing efforts in prevention, early assessment, and intervention for malnutrition to minimize mortality rates.

Nutritional Assessment Tools for Patients with Cancer: A Narrative Review

Cancer patients are at high risk of malnutrition, which can lead to adverse health outcomes such as prolonged hospitalization, increased complications, and increased mortality. Accurate and timely nutritional assessment plays a critical role in effectively managing malnutrition in these patients. However, while many tools exist to assess malnutrition, there is no universally accepted standard. Although different tools have their own strengths and limitations, there is a lack of narrative reviews on nutritional assessment tools for cancer patients. To address this knowledge gap, we conducted a non-systematic literature search using PubMed, Embase, Web of Science, and the Cochrane Library from their inception until May 2023. A total of 90 studies met our selection criteria and were included in our narrative review. We evaluated the applications, strengths, and limitations of 4 commonly used nutritional assessment tools for cancer patients: the Subjective Global Assessment (SGA), Patient-Generated Subjective Global Assessment (PG-SGA), Mini Nutritional Assessment (MNA), and Global Leadership Initiative on Malnutrition (GLIM). Our findings revealed that malnutrition was associated with adverse health outcomes. Each of these 4 tools has its applications, strengths, and limitations. Our findings provide medical staff with a foundation for choosing the optimal tool to rapidly and accurately assess malnutrition in cancer patients. It is essential for medical staff to be familiar with these common tools to ensure effective nutritional management of cancer patients.