OBJECTIVE: To characterise the relationship between ICD code-based (i.e. physician diagnosis-based) and criteria-based asthma ascertainment. METHODS: We compared identification of children with asthma between criteria-based medical record review for asthma ascertainment and an ICD-9 code-based approach. We determined the agreement rate and validity index of ICD code-based asthma ascertainment using asthma status by medical record review as a gold standard. RESULTS: Of the 115 study subjects, the agreement between medical record review and ICD-9 coding was 81.6% with a kappa value of 0.28 (P<0.0001). Sensitivity, specificity, positive and negative predictive values for ICD-9 code were 24.0%, 97.8%, 75.0%, and 82.0%, respectively, using criteria for asthma by medical record review as gold standard. CONCLUSIONS: ICD code-based asthma ascertainment appears to under-identify children with asthma compared to criteria-based medical record review. ICD codes may be useful for etiologic research but may not be suitable for surveillance of asthma epidemiology.
OBJECTIVE: To characterise the relationship between ICD code-based (i.e. physician diagnosis-based) and criteria-based asthma ascertainment. METHODS: We compared identification of children with asthma between criteria-based medical record review for asthma ascertainment and an ICD-9 code-based approach. We determined the agreement rate and validity index of ICD code-based asthma ascertainment using asthma status by medical record review as a gold standard. RESULTS: Of the 115 study subjects, the agreement between medical record review and ICD-9 coding was 81.6% with a kappa value of 0.28 (P<0.0001). Sensitivity, specificity, positive and negative predictive values for ICD-9 code were 24.0%, 97.8%, 75.0%, and 82.0%, respectively, using criteria for asthma by medical record review as gold standard. CONCLUSIONS: ICD code-based asthma ascertainment appears to under-identify children with asthma compared to criteria-based medical record review. ICD codes may be useful for etiologic research but may not be suitable for surveillance of asthma epidemiology.
Authors: Stephen T Wu; Sunghwan Sohn; K E Ravikumar; Kavishwar Wagholikar; Siddhartha R Jonnalagadda; Hongfang Liu; Young J Juhn Journal: Ann Allergy Asthma Immunol Date: 2013-08-12 Impact factor: 6.347
Authors: Timothy S Chang; Ronald E Gangnon; C David Page; William R Buckingham; Aman Tandias; Kelly J Cowan; Carrie D Tomasallo; Brian G Arndt; Lawrence P Hanrahan; Theresa W Guilbert Journal: J Biomed Inform Date: 2014-12-20 Impact factor: 6.317
Authors: Daniela V Luquetti; Babette S Saltzman; Daniela Vivaldi; Luiz A Pimenta; Anne V Hing; Cynthia H Cassell; Jacqueline R Starr; Carrie L Heike Journal: Birth Defects Res A Clin Mol Teratol Date: 2012-08-18
Authors: Carrie D Tomasallo; Lawrence P Hanrahan; Aman Tandias; Timothy S Chang; Kelly J Cowan; Theresa W Guilbert Journal: Am J Public Health Date: 2013-11-14 Impact factor: 9.308