Accuracy of ICD-9-CM codes in identifying infections of pneumonia and herpes simplex virus in administrative data

Drahos, Jennifer; VanWormer, Jeffrey J.; Greenlee, Robert T.; Landgren, Ola; Koshiol, Jill

doi:10.1016/j.annepidem.2013.02.005

Cited by 68 publications

(59 citation statements)

References 11 publications

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“…Among these, a study by Drahos et al . in 2013 investigated the accuracy of ICD‐9‐CM codes in identifying pneumonia and herpes simplex virus infections and concluded that it was a valid marker to identify conditions with infection . Another study by Goff et al .…”

Section: Discussionmentioning

confidence: 99%

“…Among these, a study by Drahos et al in 2013 investigated the accuracy of ICD-9-CM codes in identifying pneumonia and herpes simplex virus infections and concluded that it was a valid marker to identify conditions with infection. 10 Another study by Goff et al in 2012 concluded that using composite sets of ICD-9-CM codes provided reasonable sensitivity and specificity for identification of obstetric complications, procedures and comorbidities. 11 Although there is always a possibility of underreporting of cases with an administrative dataset, given previous studies that suggest an acceptable sensitivity in reporting of viral pneumonia and obstetric morbidities, it is likely that our use of these variables in our study can provide at least in part an acceptable representation of VZV in our cohort.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Maternal outcomes in pregnancies affected by varicella zoster virus infections: Population‐based study on 7.7 million pregnancy admissions

Zhang

Patenaude

Abenhaim

2014

J of Obstet and Gynaecol

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Maternal outcomes in pregnancies affected by varicella zoster virus infections: Population‐based study on 7.7 million pregnancy admissions

Zhang

Patenaude

Abenhaim

2014

J of Obstet and Gynaecol

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“…A study demonstrated that the identification of inpatient pneumonia using this method has a positive predictive value of 88% [20]. …”

Section: Methodsmentioning

confidence: 99%

Pneumonia is an independent risk factor for pyogenic liver abscess: A population-based, nested, case-control study

Yeh

Yang

et al. 2017

PLoS ONE

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BackgroundBacteremic pneumonia is considered a potential cause of distal organ abscess formation. Therefore, we hypothesize that pneumonia is a risk factor for pyogenic liver abscess (PLA).The aim of this study is to explore the association between pneumonia and PLA.Methodology/Principal findingsA nationwide, population-based, nested, case–control study was conducted using data from the Taiwan National Health Insurance Research Database. In total, 494 patients with PLA and 1,976 propensity score matched controls were enrolled. Conditional logistic regression was used to estimate adjusted odds ratios (aORs) in patients with exposure to pneumonia before PLA. After matched and adjusted for confounding factors including age, sex, urbanization, income, chronic liver disease, alcohol-related disease, biliary stone, chronic kidney disease, diabetes mellitus, chronic liver disease, and cancer, hospitalization for pneumonia remained an independent risk factor for PLA with an aORs of 2.104 [95% confidence interval (CI) = 1.309–3.379, p = 0.0021]. Moreover, the aORs were significantly higher among patients hospitalized for pneumonia within 30 days (aORs = 10.73, 95% CI = 3.381–34.054), 30–90 days (aORs = 4.698, 95% CI = 1.541–14.327) and 90–180 (aORs = 4.000, 95% CI = 1.158–13.817) days before PLA diagnosis.ConclusionPneumonia is an independent risk factor for subsequent PLA. Moreover, hospitalization for pneumonia within 180 days before PLA diagnosis was associated with an increased risk of PLA.

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“…A particular AE can be described in a variety of ways, and the presence of one particular code may not be sufficient. Studies, such as those by Drahos et al and Levine et al, have attempted to validate different coding definitions of the same AE through comparison with a “gold standard” (assumed true). They have demonstrated imperfect estimates of diagnostic positive predictive value that would undoubtedly introduce bias into drug safety research due to definitional variation.…”

Section: Introductionmentioning

confidence: 99%

A validation sampling approach for consistent estimation of adverse drug reaction risk with misclassified right‐censored survival data

Gravel

Dewanji

Farrell

et al. 2018

Statistics in Medicine

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Patient electronic health records, viewed as continuous-time right-censored survival data, can be used to estimate adverse drug reaction risk. Temporal outcome misclassification may occur as a result of errors in follow-up. These errors can be due to a failure to observe the incidence time of the adverse event of interest (due to misdiagnosis or nonreporting, etc) or an actual misdiagnosis of a competing adverse event. As the misclassifying event is often unobservable in the original data, we apply an internal validation sampling approach to produce consistent estimation in the presence of such errors. We introduce a univariate survival model and a cause-specific hazards model in which misclassification may also manifest as a diagnosis of an alternate adverse health outcome other than that of interest. We develop a method of maximum likelihood estimation of the model parameters and establish consistency and asymptotic normality of the estimators using standard results. We also conduct simulation studies to numerically investigate the finite sample properties of these estimators and the impact of ignoring the misclassification error.

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Accuracy of ICD-9-CM codes in identifying infections of pneumonia and herpes simplex virus in administrative data

Cited by 68 publications

References 11 publications

Maternal outcomes in pregnancies affected by varicella zoster virus infections: Population‐based study on 7.7 million pregnancy admissions

Maternal outcomes in pregnancies affected by varicella zoster virus infections: Population‐based study on 7.7 million pregnancy admissions

Pneumonia is an independent risk factor for pyogenic liver abscess: A population-based, nested, case-control study

A validation sampling approach for consistent estimation of adverse drug reaction risk with misclassified right‐censored survival data

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