title: Depression and anxiety as predictors of mortality among heart failure patients: systematic review and meta-analysis.
abstract: Several studies suggest that psychological factors are associated with negative outcomes and in particular higher mortality rates among heart failure (HF) patients. We aimed to evaluate the effect sizes of depression and anxiety on all-cause mortality in HF patients. We conducted a systematic review according to the PRISMA methodology. We searched for studies on depression or anxiety effects on all-cause mortality among HF patients published up to June 2015. A number of 26 and 6 articles met inclusion criteria for depression (total 80,627 patients) and anxiety (total 17,214 patients), respectively. The effect estimates were pooled using random-effect meta-analysis. Depression has significant and moderately heterogeneous effect on all-cause mortality (HR = 1.57; 95%CI 1.30-1.89, p < 0.001); adjustment for confounders led to a similar effect estimate (HR = 1.40; 95%CI 1.22-1.60; p < 0.001). Larger studies and higher study prevalence of depression were associated with smaller effect size. The effect of anxiety on mortality outcome was small and not conclusive given the low number of studies (n = 6) (HR = 1.02; 95% CI 1.00-1.04, p < 0.05). This systematic review and meta-analysis suggests that depression is an important and independent predictor of all-cause mortality among HF patients, while anxiety does not appear to have a strong effect. Further research is recommended toward the detection and treatment of depression.
authors.affiliation: Philips Research - Healthcare, High Tech Campus 34, 5656 AE, Eindhoven, The Netherlands. ioanna.sokoreli@philips.com.
authors.forename: I
authors.initials: I
authors.lastname: Sokoreli
authors.affiliation: Philips Research - Healthcare, High Tech Campus 34, 5656 AE, Eindhoven, The Netherlands.
authors.forename: J J G
authors.initials: JJG
authors.lastname: de Vries
authors.affiliation: Philips Research - Healthcare, High Tech Campus 34, 5656 AE, Eindhoven, The Netherlands.
authors.forename: S C
authors.initials: SC
authors.lastname: Pauws
authors.affiliation: Department of Public Health, Centre for Medical Decision Making, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: E W
authors.initials: EW
authors.lastname: Steyerberg
mesh_terms: D001007:Anxiety / Q000503:physiopathology*; D003863:Depression / Q000503:physiopathology*; D006333:Heart Failure / Q000175:diagnosis / Q000401:mortality / Q000523:psychology; D006801:Humans; D011379:Prognosis; D012307:Risk Factors
keywords: Anxiety; Depression; Heart failure; Meta-analysis; Mortality; Systematic review