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• W4281639860 abstract "Configurational methods are increasingly being used in health services research.To use configurational analysis and logistic regression within a single data set to compare results from the two methods.Secondary analysis of an observational cohort; a split-sample design involved randomly dividing patients into training and validation samples.Patients who had a transient ischaemic attack (TIA) in US Department of Veterans Affairs hospitals.The patient outcome was the combined endpoint of all-cause mortality or recurrent ischaemic stroke within 1 year post-TIA. The quality-of-care outcome was the without-fail rate (proportion of patients who received all processes for which they were eligible, among seven processes).For the recurrent stroke or death outcome, configurational analysis yielded a three-pathway model identifying a set of (validation sample) patients where the prevalence was 15.0% (83/552), substantially higher than the overall sample prevalence of 11.0% (relative difference, 36%). The configurational model had a sensitivity (coverage) of 84.7% and specificity of 40.6%. The logistic regression model identified six factors associated with the combined endpoint (c-statistic, 0.632; sensitivity, 63.3%; specificity, 63.1%). None of these factors were elements of the configurational model. For the quality outcome, configurational analysis yielded a single-pathway model identifying a set of (validation sample) patients where the without-fail rate was 64.3% (231/359), nearly twice the overall sample prevalence (33.7%). The configurational model had a sensitivity (coverage) of 77.3% and specificity of 78.2%. The logistic regression model identified seven factors associated with the without-fail rate (c-statistic, 0.822; sensitivity, 80.3%; specificity, 84.2%). Two of these factors were also identified in the configurational analysis.Configurational analysis and logistic regression represent different methods that can enhance our understanding of a data set when paired together. Configurational models optimise sensitivity with relatively few conditions. Logistic regression models discriminate cases from controls and provided inferential relationships between outcomes and independent variables." @default.
• W4281639860 created "2022-06-13" @default.
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• W4281639860 date "2022-06-01" @default.
• W4281639860 modified "2023-09-26" @default.
• W4281639860 title "Pairing regression and configurational analysis in health services research: modelling outcomes in an observational cohort using a split-sample design" @default.
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• W4281639860 doi "https://doi.org/10.1136/bmjopen-2022-061469" @default.
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