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BMJ. 2016 Apr 20;353:i1855. doi: 10.1136/bmj.i1855.

Effect of age and sex on efficacy and tolerability of β blockers in patients with heart failure with reduced ejection fraction: individual patient data meta-analysis.

Author information

1
University of Birmingham Institute of Cardiovascular Sciences, Birmingham, UK Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, Australia d.kotecha@bham.ac.uk.
2
Internal Medicine Department, Hospital Universitario Ramón y Cajal, Universidad de Alcalá, Madrid, Spain.
3
Centre of Cardiovascular Research and Education in Therapeutics, Monash University, Melbourne, Australia.
4
Department of Medical Sciences, IRCCS San Raffaele Pisana, Roma, Italy Cardiovascular and Cell Science Institute, St George's University of London, London, UK.
5
Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
6
National Heart and Lung Institute, Imperial College, London, UK.
7
Baylor University Medical Center, Dallas, USA.
8
Wallenberg Laboratory for Cardiovascular Research, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
9
Monash Warwick Alliance, Monash University, Melbourne, Australia Monash Warwick Alliance, University of Warwick, Warwick, UK.
10
University of Birmingham Institute of Cardiovascular Sciences, Birmingham, UK.
11
Department of Cardiology, Oslo University Hospital, Oslo, Norway.
12
Academic Cardiology, Castle Hill Hospital, Kingston upon Hull, UK.
13
Department of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands.
14
Division of Cardiology, University of Alberta, Edmonton, Canada.
15
Nordic School of Public Health, Gothenburg, Sweden.
16
Universitätsklinikum des Saarlandes, Homburg/Saar, Germany.
17
Norwich Medical School, University of East Anglia, Norwich, UK.

Abstract

OBJECTIVES:

To determine the efficacy and tolerability of β blockers in a broad age range of women and men with heart failure with reduced ejection fraction (HFrEF) by pooling individual patient data from placebo controlled randomised trials.

DESIGN:

Prospectively designed meta-analysis of individual patient data from patients aged 40-85 in sinus rhythm at baseline, with left ventricular ejection fraction <0.45.

PARTICIPANTS:

13,833 patients from 11 trials; median age 64; 24% women.

MAIN OUTCOME MEASURES:

The primary outcome was all cause mortality; the major secondary outcome was admission to hospital for heart failure. Analysis was by intention to treat with an adjusted one stage Cox proportional hazards model.

RESULTS:

Compared with placebo, β blockers were effective in reducing mortality across all ages: hazard ratios were 0.66 (95% confidence interval 0.53 to 0.83) for the first quarter of age distribution (median age 50); 0.71 (0.58 to 0.87) for the second quarter (median age 60); 0.65 (0.53 to 0.78) for the third quarter (median age 68); and 0.77 (0.64 to 0.92) for the fourth quarter (median age 75). There was no significant interaction when age was modelled continuously (P=0.1), and the absolute reduction in mortality was 4.3% over a median follow-up of 1.3 years (number needed to treat 23). Admission to hospital for heart failure was significantly reduced by β blockers, although this effect was attenuated at older ages (interaction P=0.05). There was no evidence of an interaction between treatment effect and sex in any age group. Drug discontinuation was similar regardless of treatment allocation, age, or sex (14.4% in those give β blockers, 15.6% in those receiving placebo).

CONCLUSION:

Irrespective of age or sex, patients with HFrEF in sinus rhythm should receive β blockers to reduce the risk of death and admission to hospital.Registration PROSPERO CRD42014010012; Clinicaltrials.gov NCT00832442.

Comment in

PMID:
27098105
PMCID:
PMC4849174
[Indexed for MEDLINE]
Free PMC Article

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