Subgroup analyses by country revealed significant effects in studies from China (OR = 0.50, 95% CI: 0.25-0.75), the Netherlands (OR = 0.92, 95% CI: 0.65-1.19), and Mexico (OR = 2.63, 95% CI: 1.64-3.63), whereas the study from Belgium had a marginally significant effect (OR = 0.415, 95% CI: -0.004-0.834) [ 7 , 10 , 11 ].
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Improving Hospital Efficiency and Cost Management: A Systematic Review and Meta-Analysis.
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