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Authors
Rao, Wen
Wang, Dafu
Ma, Xiaoxue
Zhou, Jian
Gong, Tingting
Xia, Zihao
Zeng, Xiangye
Hong, Feng
Li, Jinlan
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Funding
Funding for this research was provided by:
Preliminary work project of provincial capital construction of Guizhou Provincial development and reform commission ((2020-181-131))
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Article History
Received: 14 October 2025
Accepted: 6 March 2026
First Online: 3 April 2026
Declarations
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: This study was approved by the Ethics Committee of the Guizhou Center for Disease Control and Prevention. The data used in this research were obtained from the Chinese Disease Prevention and Control Information System, where access is strictly regulated. Researchers were authorized to retrieve and analyze data only within the permitted scope. Rigorous procedures were applied during data extraction and processing to remove all potentially identifiable information, including patient names, identification numbers, and residential addresses, ensuring complete anonymity. Based on these measures, the Ethics Committee determined that individual informed consent was not required for this secondary analysis of anonymized data. All procedures were performed in accordance with institutional and national ethical standards and the principles of the Declaration of Helsinki (as revised in 2013).
: Not applicable.
: Not applicable.
: Not applicable.
: The authors declare no competing interests.
