Positive Predictive Value of Sarcoidosis Identified in an Administrative Healthcare Registry: A Validation Study
International classification of disease (ICD) codes used to study sarcoidosis has previously been validated in only 1 study. We aimed to determine the accuracy of ICD codes to identify true sarcoidosis diagnoses in Sweden. We identified adults with at least 2 ICD codes for sarcoidosis (ICD-10 D86) a...
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| Published in: | Epidemiology (Cambridge, Mass.) Vol. 32; no. 3; pp. 444 - 447 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
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Lippincott Williams & Wilkins
01-05-2021
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| Abstract | International classification of disease (ICD) codes used to study sarcoidosis has previously been validated in only 1 study. We aimed to determine the accuracy of ICD codes to identify true sarcoidosis diagnoses in Sweden.
We identified adults with at least 2 ICD codes for sarcoidosis (ICD-10 D86) at Karolinska University Hospital 2010-2013 from the National Patient Register. Of these, we randomly sampled 100 patients for validation. We collected clinical data and categorized the diagnosis of sarcoidosis as definite, probable, or unlikely. We estimated the positive predictive value for definite and probable sarcoidosis-identified with at least 2 ICD codes-with 95% confidence intervals.
We deemed 77% of the cases to be definite and 17% to be probable. The positive predictive value was 0.94 (95% confidence intervals = 0.87 to 0.98).
Using at least 2 visits listing an ICD-10 code for sarcoidosis accurately identified patients with sarcoidosis from administrative health data in Sweden. |
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| AbstractList | BACKGROUNDInternational classification of disease (ICD) codes used to study sarcoidosis has previously been validated in only 1 study. We aimed to determine the accuracy of ICD codes to identify true sarcoidosis diagnoses in Sweden. METHODSWe identified adults with at least 2 ICD codes for sarcoidosis (ICD-10 D86) at Karolinska University Hospital 2010-2013 from the National Patient Register. Of these, we randomly sampled 100 patients for validation. We collected clinical data and categorized the diagnosis of sarcoidosis as definite, probable, or unlikely. We estimated the positive predictive value for definite and probable sarcoidosis-identified with at least 2 ICD codes-with 95% confidence intervals. RESULTSWe deemed 77% of the cases to be definite and 17% to be probable. The positive predictive value was 0.94 (95% confidence intervals = 0.87 to 0.98). CONCLUSIONSUsing at least 2 visits listing an ICD-10 code for sarcoidosis accurately identified patients with sarcoidosis from administrative health data in Sweden. Background: International classification of disease (ICD) codes used to study sarcoidosis has previously been validated in only 1 study. We aimed to determine the accuracy of ICD codes to identify true sarcoidosis diagnoses in Sweden. Methods: We identified adults with at least 2 ICD codes for sarcoidosis (ICD-10 D86) at Karolinska University Hospital 2010–2013 from the National Patient Register. Of these, we randomly sampled 100 patients for validation. We collected clinical data and categorized the diagnosis of sarcoidosis as definite, probable, or unlikely. We estimated the positive predictive value for definite and probable sarcoidosis—identified with at least 2 ICD codes—with 95% confidence intervals. Results: We deemed 77% of the cases to be definite and 17% to be probable. The positive predictive value was 0.94 (95% confidence intervals = 0.87 to 0.98). Conclusions: Using at least 2 visits listing an ICD-10 code for sarcoidosis accurately identified patients with sarcoidosis from administrative health data in Sweden. International classification of disease (ICD) codes used to study sarcoidosis has previously been validated in only 1 study. We aimed to determine the accuracy of ICD codes to identify true sarcoidosis diagnoses in Sweden. We identified adults with at least 2 ICD codes for sarcoidosis (ICD-10 D86) at Karolinska University Hospital 2010-2013 from the National Patient Register. Of these, we randomly sampled 100 patients for validation. We collected clinical data and categorized the diagnosis of sarcoidosis as definite, probable, or unlikely. We estimated the positive predictive value for definite and probable sarcoidosis-identified with at least 2 ICD codes-with 95% confidence intervals. We deemed 77% of the cases to be definite and 17% to be probable. The positive predictive value was 0.94 (95% confidence intervals = 0.87 to 0.98). Using at least 2 visits listing an ICD-10 code for sarcoidosis accurately identified patients with sarcoidosis from administrative health data in Sweden. |
| Author | Ceder, Sylvia Kullberg, Susanna Rossides, Marios Grunewald, Johan Arkema, Elizabeth V. Eklund, Anders |
| AuthorAffiliation | Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden |
| AuthorAffiliation_xml | – name: Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden |
| Author_xml | – sequence: 1 givenname: Sylvia surname: Ceder fullname: Ceder, Sylvia organization: From the Respiratory Medicine Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden – sequence: 2 givenname: Marios surname: Rossides fullname: Rossides, Marios organization: Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden – sequence: 3 givenname: Susanna surname: Kullberg fullname: Kullberg, Susanna organization: From the Respiratory Medicine Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden – sequence: 4 givenname: Anders surname: Eklund fullname: Eklund, Anders organization: From the Respiratory Medicine Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden – sequence: 5 givenname: Johan surname: Grunewald fullname: Grunewald, Johan organization: From the Respiratory Medicine Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden – sequence: 6 givenname: Elizabeth V. surname: Arkema fullname: Arkema, Elizabeth V. organization: Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden |
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| Cites_doi | 10.1183/13993003.01815-2017 10.1378/chest.14-1099 10.1183/13993003.00444-2019 10.1183/13993003.00477-2016 10.1513/AnnalsATS.201511-760OC 10.1007/s10654-020-00611-w 10.1186/1471-2458-11-450 10.1016/j.rmed.2018.09.016 10.1183/13993003.00385-2018 10.1183/13993003.00767-2020 10.1111/1346-8138.13654 10.1007/s00408-017-0054-x 10.1183/13993003.01397-2017 10.1038/s41572-019-0096-x 10.1186/s12931-018-0871-3 |
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| References | Rossides (R12-20240821) 2018; 52 Dumas (R16-20240821) 2017; 50 Wu (R5-20240821) 2017; 44 Cozier (R15-20240821) 2015; 147 Yoon (R4-20240821) 2018; 19 Rossides (R7-20240821) 2018; 51 Arkema (R11-20240821) 2018; 144S Fidler (R2-20240821) 2019; 54 Rossides (R14-20240821) 2020; 56 Baughman (R6-20240821) 2016; 13 Ludvigsson (R10-20240821) 2011; 11 Ungprasert (R8-20240821) 2017; 195 Grunewald (R1-20240821) 2019; 5 Arkema (R3-20240821) 2016; 48 Rossides (R13-20240821) 2020; 35 |
| References_xml | – volume: 51 start-page: 1701815 year: 2018 ident: R7-20240821 article-title: Sarcoidosis mortality in Sweden: a population-based cohort study. publication-title: Eur Respir J doi: 10.1183/13993003.01815-2017 contributor: fullname: Rossides – volume: 147 start-page: 1086 year: 2015 ident: R15-20240821 article-title: Obesity and weight gain in relation to incidence of sarcoidosis in US black women: data from the Black Women’s Health Study. publication-title: Chest doi: 10.1378/chest.14-1099 contributor: fullname: Cozier – volume: 54 start-page: 1900444 year: 2019 ident: R2-20240821 article-title: Epidemiology and health outcomes of sarcoidosis in a universal healthcare population: a cohort study. publication-title: Eur Respir J doi: 10.1183/13993003.00444-2019 contributor: fullname: Fidler – volume: 48 start-page: 1690 year: 2016 ident: R3-20240821 article-title: Sarcoidosis incidence and prevalence: a nationwide register-based assessment in Sweden. publication-title: Eur Respir J doi: 10.1183/13993003.00477-2016 contributor: fullname: Arkema – volume: 13 start-page: 1244 year: 2016 ident: R6-20240821 article-title: Sarcoidosis in America. Analysis based on health care use. publication-title: Ann Am Thorac Soc doi: 10.1513/AnnalsATS.201511-760OC contributor: fullname: Baughman – volume: 35 start-page: 1087 year: 2020 ident: R13-20240821 article-title: Are infectious diseases risk factors for sarcoidosis or a result of reverse causation? Findings from a population-based nested case-control study. publication-title: Eur J Epidemiol doi: 10.1007/s10654-020-00611-w contributor: fullname: Rossides – volume: 11 start-page: 450 year: 2011 ident: R10-20240821 article-title: External review and validation of the Swedish national inpatient register. publication-title: BMC Public Health doi: 10.1186/1471-2458-11-450 contributor: fullname: Ludvigsson – volume: 144S start-page: S7 year: 2018 ident: R11-20240821 article-title: Work ability before and after sarcoidosis diagnosis in Sweden. publication-title: Respir Med doi: 10.1016/j.rmed.2018.09.016 contributor: fullname: Arkema – volume: 52 start-page: 1800385 year: 2018 ident: R12-20240821 article-title: Familial aggregation and heritability of sarcoidosis: a Swedish nested case-control study. publication-title: Eur Respir J doi: 10.1183/13993003.00385-2018 contributor: fullname: Rossides – volume: 56 start-page: 2000767 year: 2020 ident: R14-20240821 article-title: Risk of first and recurrent serious infection in sarcoidosis: a Swedish register-based cohort study. publication-title: Eur Respir J doi: 10.1183/13993003.00767-2020 contributor: fullname: Rossides – volume: 44 start-page: 423 year: 2017 ident: R5-20240821 article-title: Comorbid autoimmune diseases in patients with sarcoidosis: a nationwide case-control study in Taiwan. publication-title: J Dermatol doi: 10.1111/1346-8138.13654 contributor: fullname: Wu – volume: 195 start-page: 713 year: 2017 ident: R8-20240821 article-title: Accuracy of diagnostic coding for sarcoidosis in electronic databases: a population-based study. publication-title: Lung doi: 10.1007/s00408-017-0054-x contributor: fullname: Ungprasert – volume: 50 start-page: 1701397 year: 2017 ident: R16-20240821 article-title: Prospective study of body mass index and risk of sarcoidosis in US women. publication-title: Eur Respir J doi: 10.1183/13993003.01397-2017 contributor: fullname: Dumas – volume: 5 start-page: 45 year: 2019 ident: R1-20240821 article-title: Sarcoidosis. publication-title: Nat Rev Dis Primers doi: 10.1038/s41572-019-0096-x contributor: fullname: Grunewald – volume: 19 start-page: 158 year: 2018 ident: R4-20240821 article-title: Prevalence and incidence of sarcoidosis in Korea: a nationwide population-based study. publication-title: Respir Res doi: 10.1186/s12931-018-0871-3 contributor: fullname: Yoon |
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| Title | Positive Predictive Value of Sarcoidosis Identified in an Administrative Healthcare Registry: A Validation Study |
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