Dataset Information

Digoxin Benefit Varies by Risk of Heart Failure Hospitalization: Applying the Tufts MC HF Risk Model.

ABSTRACT:

Background

Digoxin has been shown to reduce heart failure hospitalizations with a neutral effect on mortality. It is unknown whether there is heterogeneity of treatment effect for digitalis therapy according to predicted risk of heart failure hospitalization.

Methods and results

We conducted a post hoc analysis of the Digitalis Investigator Group (DIG) studies, randomized controlled trials of digoxin vs placebo in participants with heart failure and left ventricular ejection fraction ≤45% (main DIG study, n = 6800) or >45% (ancillary DIG study, n = 988). Using a previously derived multistate model to risk-stratify DIG study participants, we determined the differential treatment effect on hospitalization and mortality outcomes. There was a 13% absolute reduction in the risk of any heart failure hospitalizations (39% vs 52%; odds ratio 0.58; 95% confidence interval 0.47-0.71) in the digoxin vs placebo arms in the highest-risk quartile, compared with a 3% absolute risk reduction for any heart failure hospitalization (17% vs 20%; odds ratio 0.84; 95% confidence interval, 0.66-1.08) in the lowest-risk quartile. There were 12 fewer total all-cause hospitalizations per 100 person-years in the highest-risk quartile compared with an increase of 8 hospitalizations per 100 person-years in the lowest-risk quartile. There was neutral effect of digoxin on mortality in all risk quartiles and no interaction between baseline risk and the effect of digoxin on mortality (P = .94).

Conclusions

Participants in the DIG study at higher risk of hospitalization as identified by a multistate model were considerably more likely to benefit from digoxin therapy to reduce heart failure hospitalization.

SUBMITTER: Upshaw JN

PROVIDER: S-EPMC7643562 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Publications

Digoxin Benefit Varies by Risk of Heart Failure Hospitalization: Applying the Tufts MC HF Risk Model.

Upshaw Jenica N JN van Klaveren David D Konstam Marvin A MA Kent David M DM

The American journal of medicine 20171225 6

<h4>Background</h4>Digoxin has been shown to reduce heart failure hospitalizations with a neutral effect on mortality. It is unknown whether there is heterogeneity of treatment effect for digitalis therapy according to predicted risk of heart failure hospitalization.<h4>Methods and results</h4>We conducted a post hoc analysis of the Digitalis Investigator Group (DIG) studies, randomized controlled trials of digoxin vs placebo in participants with heart failure and left ventricular ejection fract ...[more]

PMID: 29284111

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Dataset Information

Digoxin Benefit Varies by Risk of Heart Failure Hospitalization: Applying the Tufts MC HF Risk Model.

Background

Methods and results

Conclusions

Publications

Digoxin Benefit Varies by Risk of Heart Failure Hospitalization: Applying the Tufts MC HF Risk Model.

Similar Datasets

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