Accuracy of the ICD-9 codes for identifying TIA and stroke in an Italian automated database.

作者: M. A. Leone , A. Capponi , C. Varrasi , R. Tarletti , F. Monaco

DOI: 10.1007/S10072-004-0355-8

关键词:

摘要: The object of this study was to evaluate the sensitivity and positive predictive value (PPV) International Classification Diseases, 9th revision (ICD-9) codes 430–438 in Sistema Informativo Sanitario Regionale (SISR), an Italian health care automated database. We compared SISR with a manual search all cases transient ischaemic attack (TIA) stroke discharged from Novara Hospital, NW Italy. Results were as follows: list: 1017 patients; list 1005. Linked: 896; false negatives: 109; positives: 121. Sensitivity 430–438: 77% at primary position only 89% either or secondary position; PPV: 93% 88%. PPV for specific vs. each subcategory (sensitivity only/any position): 430, subarachnoid haemorrhage (33/35%; 46/43%); 431, cerebral (57/59%; 77/75%); 434, infarction (35/37%; 90/87%); 436, unknown type (29/29%; 19/16%); 435, TIA (75/82%; 80/78%). database has high PPV; is TIA, but low ICD codes.

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