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In clinical practice, early detection and treatment of premature ovarian decline characterized by abnormal ovarian reserve tests is regarded as a critical measure to prevent infertility. However, the relevant data are typically stored in an unstructured format in a hospital\u2019s electronic medical record (EMR) system, and their retrieval requires tedious manual abstraction by domain experts. Computational tools are therefore needed to reduce the workload.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>We presented RegEMR, an artificial intelligence tool composed of a rule-based natural language processing (NLP) extractor and a knowledge-based disease scoring model, to automatize the screening procedure of premature ovarian decline using Chinese reproductive EMRs. We used regular expressions (REs) as a text mining method and explored whether REs automatically synthesized by the genetic programming-based online platform RegexGenerator\u2009+\u2009\u2009+\u2009could be as effective as manually formulated REs. We also investigated how the representativeness of the learning corpus affected the performance of machine-generated REs. Additionally, we translated the clinical diagnostic criteria into a programmable disease diagnostic model for disease scoring and risk stratification. Four hundred outpatient medical records were collected from a Chinese fertility center. Manual review served as the gold standard, and fivefold cross-validation was used for evaluation.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The overall F-score of manually built REs was 0.9444 (95% CI 0.9373 to 0.9515), with no significant difference (paired t test <jats:italic>p<\/jats:italic>\u2009&gt;\u20090.05) compared with machine-generated REs that could be affected by training set sizes and annotation portions. The extractor performed effectively in automatically tracing the dynamic changes in hormone levels (F-score 0.9518\u20130.9884) and ultrasonographic measures (F-score 0.9472\u20130.9822). Applying the extracted information to the proposed diagnostic model, the program obtained an accuracy of 0.98 and a sensitivity of 0.93 in risk screening. For each specific disease, the automatic diagnosis in 76% of patients was consistent with that of the clinical diagnosis, and the kappa coefficient was 0.63.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>A Chinese NLP system named RegEMR was developed to automatically identify high risk of early ovarian aging and diagnose related diseases from Chinese reproductive EMRs. We hope that this system can aid EMR-based data collection and clinical decision support in fertility centers.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12911-023-02239-8","type":"journal-article","created":{"date-parts":[[2023,7,18]],"date-time":"2023-07-18T06:02:09Z","timestamp":1689660129000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["RegEMR: a natural language processing system to automatically identify premature ovarian decline from Chinese electronic medical records"],"prefix":"10.1186","volume":"23","author":[{"given":"Jie","family":"Cai","sequence":"first","affiliation":[]},{"given":"Shenglin","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Siyun","family":"Guo","sequence":"additional","affiliation":[]},{"given":"Suidong","family":"Wang","sequence":"additional","affiliation":[]},{"given":"Lintong","family":"Li","sequence":"additional","affiliation":[]},{"given":"Xiaotong","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Keming","family":"Zheng","sequence":"additional","affiliation":[]},{"given":"Yudong","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Shiling","family":"Chen","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,7,18]]},"reference":[{"key":"2239_CR1","doi-asserted-by":"publisher","first-page":"10952","DOI":"10.18632\/aging.102497","volume":"11","author":"H Sun","year":"2019","unstructured":"Sun H, Gong TT, Jiang YT, Zhang S, Zhao YH, Wu QJ. 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We obtained written informed consent from the patients whose data were used in this study. All methods were performed in accordance with the Declaration of Helsinki.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"126"}}