Keywords
Intracranial tumor
Hospital admission
Time trend
Unified health system
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Abstract
Objective: To evaluate the temporal trend of hospital admission rates for microsurgery of intracranial tumors in Brazil from 2008 to 2023. Methods: This is an ecological time series study using data from the Hospital Information System of the Brazilian Unified Health System (SIH/SUS), accessed via DATASUS. Hospitalizations for intracranial tumor microsurgeries performed between 2008 and 2023 were analyzed, considering variables such as number of hospitalizations, average length of stay, average cost per hospitalization (AIH), and mortality rate. Trend analysis was performed using fifth-degree polynomial regression. Ethical approval was not required as secondary, public domain data were used. Results: A total of 69,584 hospitalizations were recorded. There was a 61.5% increase in the annual number of procedures, a reduction in average length of stay (from 14.9 to 12.1 days), and a decrease in mortality rate (from 8.21% to 6.28%). The average AIH cost increased by 81%. Regression models showed strong fit (R² > 0.72), indicating upward trends in hospitalizations and improvement in care indicators. Conclusion: Findings suggest progress in neurosurgical care in the SUS, with expanded access and better clinical outcomes. However, regional disparities and information system limitations remain.
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