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Article analysis:

This article is a meta-analysis exploring the risk factors of perioperative hidden blood loss (HBL) in the treatment of intertrochanteric fracture for Chinese patients. The authors conducted an extensive search of literature in English and Chinese databases up to July 2021 and collected 7 studies including 1377 patients in their final analysis. The results showed that female patients, hypertension, time from injury to operation (<2 days), operation time (≥60 mins), fracture type (A2.2 to A3.3), and without anticoagulation were associated with increased risks of perioperative HBL in Chinese patients receiving the treatment for the intertrochanteric fracture while anesthesia, ASA classification, and body mass index were not associated with perioperative HBL.

The article is generally reliable as it provides a comprehensive overview of existing research on this topic and presents its findings clearly and concisely. However, there are some potential biases that should be noted when interpreting these results such as publication bias due to only searching published literature which may lead to overestimation or underestimation of certain effects; language bias due to only searching English and Chinese databases which may lead to missing out on relevant studies; selection bias due to only including studies meeting certain criteria which may lead to excluding important information; confounding variables due to not controlling for all possible variables which may lead to inaccurate conclusions; and data quality bias due to relying on self-reported data which may lead to inaccurate results. Additionally, it should be noted that this study does not explore counterarguments or present both sides equally as it focuses solely on identifying risk factors for HBL after intertrochanteric fracture surgery in Chinese patients rather than providing a balanced view on this topic.