Association between residual gastric volume and long-term postoperative sleep disturbances in gastric cancer survivors.

For confounding factors that showed statistically significant differences (P<0.05) or marginally significant differences (0.05≤P<0.1) in association with both RGV and sleep disturbance and might interfere with the primary study results, the present study performed adjustments using a multivariate logistic regression model designed to identify independent predictors of postoperative sleep disturbance.

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Our study demonstrated a similar trend between the two groups, although most of the relevant comparisons did not reach statistical significance ( Tables 1 - 4 ), suggesting acceptable baseline balance between groups.

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