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Effectiveness of neuraminidase inhibitors in treatment and prevention of influenza A and B: systematic review and meta-analyses of randomised controlled trials

BMJ, 2003-06, Vol.326 (7401), p.1235-1239 [Peer Reviewed Journal]

2003 BMJ Publishing Group Ltd. ;Copyright 2003 BMJ Publishing Group Ltd ;Copyright: 2003 (c) 2003 BMJ Publishing Group Ltd. ;Copyright © 2003, BMJ Publishing Group Ltd. 2003 ;ISSN: 0959-8138 ;EISSN: 1468-5833 ;EISSN: 1756-1833 ;DOI: 10.1136/bmj.326.7401.1235 ;PMID: 12791735

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Title:
Effectiveness of neuraminidase inhibitors in treatment and prevention of influenza A and B: systematic review and meta-analyses of randomised controlled trials
Author: Cooper, Nicola J ; Sutton, Alexander J ; Abrams, Keith R ; Wailoo, Allan ; Turner, David ; Nicholson, Karl G
Subjects: Acetamides - therapeutic use ; Adolescent ; Adult ; Adults ; Aged ; Antiviral Agents - therapeutic use ; Child ; Child, Preschool ; Children ; Depopulation ; Enzyme Inhibitors - therapeutic use ; Experimentation ; Guanidines ; Humans ; Infant ; Infant, Newborn ; Influenza A virus ; Influenza B virus ; Influenza, Human - drug therapy ; Influenza, Human - prevention & control ; Middle Aged ; Neuraminidase - antagonists & inhibitors ; Oseltamivir ; Placebos ; Population control ; Pyrans ; Randomized Controlled Trials as Topic ; Sialic Acids - therapeutic use ; Statistical median ; Statistical results ; Symptoms ; Zanamivir
Is Part Of: BMJ, 2003-06, Vol.326 (7401), p.1235-1239
Description: Abstract Objective To review the clinical effectiveness of oseltamivir and zanamivir for the treatment and prevention of influenza A and B. Design Systematic review and meta-analyses of randomised controlled trials. Data sources Published studies were retrieved from electronic bibliographic databases; supplementary data were obtained from the manufacturers. Selection of studies Randomised controlled, double blind trials that were published in English, had data available before 31 December 2001, evaluated treatment or prevention of naturally occurring influenza with zanamivir or oseltamivir (if given using the formulation and dosage licensed for clinical use), and reported at least one end point of relevance. Review methods The main outcome measures were the median time to the alleviation of symptoms (for treatment trials) and number of flu episodes avoided (for prevention trials). Three population groups were defined: children aged 12 years and under; otherwise healthy individuals aged 12 to 65 years; and “high risk” individuals (those with certain chronic medical conditions or aged 65 years and older). Results Seventeen treatment trials and seven prevention trials identified met the inclusion criteria. All trials included compared one of the drugs against placebo or standard care. Treatment of children, otherwise healthy individuals, and high risk populations with zanamivir reduced the median duration of symptoms in days respectively by 1.0 (95% confidence interval 0.5 to 1.5), 0.8 (0.3 to 1.3), and 0.9 (−0.1 to 1.9) for the intention to treat population. The corresponding results, in days, for oseltamivir were 0.9 (0.3 to 1.5), 0.9 (0.3 to 1.4), and 0.4 (−0.7 to 1.4). The effect of giving zanamivir and oseltamivir prophylactically resulted in a relative reduction of 70-90% in the odds of developing flu, depending on the strategy adopted and the population studied. Conclusions Evidence from randomised controlled trials consistently supports the view that both oseltamivir and zanamivir are clinically effective for treating and preventing flu. However, evidence is limited for the treatment of certain populations and for all prevention strategies.
Publisher: England: British Medical Journal Publishing Group
Language: English
Identifier: ISSN: 0959-8138
EISSN: 1468-5833
EISSN: 1756-1833
DOI: 10.1136/bmj.326.7401.1235
PMID: 12791735
Source: MEDLINE
Alma/SFX Local Collection
ProQuest Central

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Effectiveness of neuraminidase inhibitors in treatment and prevention of influenza A and B: systematic review and meta-analyses of randomised controlled trials

2003 BMJ Publishing Group Ltd. ;Copyright 2003 BMJ Publishing Group Ltd ;Copyright: 2003 (c) 2003 BMJ Publishing Group Ltd. ;Copyright © 2003, BMJ Publishing Group Ltd. 2003 ;ISSN: 0959-8138 ;EISSN: 1468-5833 ;EISSN: 1756-1833 ;DOI: 10.1136/bmj.326.7401.1235 ;PMID: 12791735

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