Randomised study of effect of different doses of vitamin A on childhood morbidity and mortality.

Abstract:

OBJECTIVES:To determine whether the dose of vitamin A currently recommended by the World Health Organization or half this dose gives better protection against childhood morbidity and mortality. DESIGN:Randomised study. SETTING:A combined oral polio vaccine and vitamin A supplementation campaign in Guinea-Bissau, Africa. PARTICIPANTS:4983 children aged 6 months to 5 years. INTERVENTIONS:One of two doses of vitamin A (recommended and half); oral polio vaccine. MAIN OUTCOME MEASURES:Mortality and morbidity at six and nine months. RESULTS:Mortality was lower in the children who took half the recommended dose of vitamin A compared with the full dose at both six months (mortality rate ratio 0.69, 95% confidence interval 0.36 to 1.35) and nine months (0.62, 0.36 to 1.06) of follow-up. There was a significant interaction between sex and dose, the lower dose being associated with significantly reduced mortality in girls (0.19, 0.06 to 0.66) but not in boys (1.98, 0.74 to 5.29). The lower dose of vitamin A was consistently associated with lower hospital case fatality in girls (0.19, 0.02 to 1.45). Paradoxically, in children aged 6-18 months, the low dose was associated with slightly higher morbidity. CONCLUSIONS:Half the dose of vitamin A currently recommended by WHO may provide equally good or better protection against mortality but not against morbidity.

journal_name

BMJ

authors

Benn CS,Martins C,Rodrigues A,Jensen H,Lisse IM,Aaby P

doi

10.1136/bmj.38670.639340.55

keywords:

subject

Has Abstract

pub_date

2005-12-17 00:00:00

pages

1428-32

issue

7530

eissn

0959-8138

issn

1756-1833

pii

bmj.38670.639340.55

journal_volume

331

pub_type

杂志文章,随机对照试验
  • Meta-analysis of short-term low dose prednisolone versus placebo and non-steroidal anti-inflammatory drugs in rheumatoid arthritis.

    abstract:OBJECTIVE:To determine whether short-term, oral low dose prednisolone (< or = 15 mg daily) is superior to placebo and non-steroidal anti-inflammatory drugs in patients with rheumatoid arthritis. DESIGN:Meta-analysis of randomised trials of oral corticosteroids compared with placebo or a non-steroidal anti-inflammatory...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析

    doi:10.1136/bmj.316.7134.811

    authors: Gøtzsche PC,Johansen HK

    更新日期:1998-03-14 00:00:00

  • Clinical effectiveness of elective single versus double embryo transfer: meta-analysis of individual patient data from randomised trials.

    abstract:OBJECTIVE:To compare the effectiveness of elective single embryo transfer versus double embryo transfer on the outcomes of live birth, multiple live birth, miscarriage, preterm birth, term singleton birth, and low birth weight after fresh embryo transfer, and on the outcomes of cumulative live birth and multiple live b...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析,评审

    doi:10.1136/bmj.c6945

    authors: McLernon DJ,Harrild K,Bergh C,Davies MJ,de Neubourg D,Dumoulin JC,Gerris J,Kremer JA,Martikainen H,Mol BW,Norman RJ,Thurin-Kjellberg A,Tiitinen A,van Montfoort AP,van Peperstraten AM,Van Royen E,Bhattacharya S

    更新日期:2010-12-21 00:00:00

  • Clinical trials of homoeopathy.

    abstract:OBJECTIVE:To establish whether there is evidence of the efficacy of homoeopathy from controlled trials in humans. DESIGN:Criteria based meta-analysis. Assessment of the methodological quality of 107 controlled trials in 96 published reports found after an extensive search. Trials were scored using a list of predefined...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析

    doi:10.1136/bmj.302.6772.316

    authors: Kleijnen J,Knipschild P,ter Riet G

    更新日期:1991-02-09 00:00:00

  • Community care and social services.

    abstract::The aim of community care is to enable people with various types of disability to live in their own homes, rather than in institutions. This involves the provision of support and services at home by various agencies. After a critical report in 1986 identified problems with coordination and flexibility of community car...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,评审

    doi:10.1136/bmj.313.7061.869

    authors: Renwick D

    更新日期:1996-10-05 00:00:00

  • Clinical predictors of hypoxaemia in Gambian children with acute lower respiratory tract infection: prospective cohort study.

    abstract:OBJECTIVES:To determine clinical correlates and outcome of hypoxaemia in children admitted to hospital with an acute lower respiratory tract infection. DESIGN:Prospective cohort study. SETTING:Paediatric wards of the Royal Victoria Hospital and the hospital of the Medical Research Council's hospital in Banjul, the Ga...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1136/bmj.318.7176.86

    authors: Usen S,Weber M,Mulholland K,Jaffar S,Oparaugo A,Omosigho C,Adegbola R,Greenwood B

    更新日期:1999-01-09 00:00:00

  • Will new diagnostic criteria for diabetes mellitus change phenotype of patients with diabetes? Reanalysis of European epidemiological data. DECODE Study Group on behalf of the European Diabetes Epidemiology Study Group.

    abstract:OBJECTIVE:To evaluate the impact of the revised diagnostic criteria for diabetes mellitus adopted by the American Diabetes Association on prevalence of diabetes and on classification of patients. For epidemiological purposes the American criteria use a fasting plasma glucose concentration >=7.0 mmol/l in contrast with ...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.317.7155.371

    authors:

    更新日期:1998-08-08 00:00:00

  • Longitudinal study of outcome of chronic fatigue syndrome.

    abstract:OBJECTIVE:To examine the predictors of long term outcome for patients with the chronic fatigue syndrome. DESIGN:Cohort study. SUBJECTS:139 subjects previously enrolled in two treatment trials; 103 (74%) were reassessed a mean of 3.2 years after start of the trials. SETTING:University hospital referral centre. MAIN ...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.308.6931.756

    authors: Wilson A,Hickie I,Lloyd A,Hadzi-Pavlovic D,Boughton C,Dwyer J,Wakefield D

    更新日期:1994-03-19 00:00:00

  • Systematic review and meta-analysis of ethnic differences in risks of adverse reactions to drugs used in cardiovascular medicine.

    abstract:OBJECTIVE:To review the evidence for ethnic differences in susceptibility to adverse drug reactions (ADRs) to cardiovascular drugs. DESIGN:Systematic review and meta-analysis. DATA SOURCES:We searched Medline and Embase to March 2005. Reference lists of identified articles were hand searched for further relevant arti...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析,评审

    doi:10.1136/bmj.38803.528113.55

    authors: McDowell SE,Coleman JJ,Ferner RE

    更新日期:2006-05-20 00:00:00

  • A systematic review of physicians' survival predictions in terminally ill cancer patients.

    abstract:OBJECTIVE:To systematically review the accuracy of physicians' clinical predictions of survival in terminally ill cancer patients. DATA SOURCES:Cochrane Library, Medline (1996-2000), Embase, Current Contents, and Cancerlit databases as well as hand searching. STUDY SELECTION:Studies were included if a physician's tem...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析,评审

    doi:10.1136/bmj.327.7408.195

    authors: Glare P,Virik K,Jones M,Hudson M,Eychmuller S,Simes J,Christakis N

    更新日期:2003-07-26 00:00:00

  • Cost effectiveness of treating primary care patients in accident and emergency: a comparison between general practitioners, senior house officers, and registrars.

    abstract:OBJECTIVES:To compare outcome and costs of general practitioners, senior house officers, and registrars treating patients who attended accident and emergency department with problems assessed at triage as being of primary care type. DESIGN:Prospective intervention study which was later costed. SETTING:Inner city acci...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.312.7042.1340

    authors: Dale J,Lang H,Roberts JA,Green J,Glucksman E

    更新日期:1996-05-25 00:00:00

  • Investigation of growth, development, and factors associated with injury in elite schoolboy footballers: prospective study.

    abstract:OBJECTIVE:To investigate the differences between skeletal and chronological age and to assess the role of maturity status, anthropometric data, and football related variables in explaining injury statistics in elite schoolboy footballers. DESIGN:Prospective study of injuries in schoolboy footballers according to skele...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.b490

    authors: Johnson A,Doherty PJ,Freemont A

    更新日期:2009-02-26 00:00:00

  • Associations between macrolide antibiotics prescribing during pregnancy and adverse child outcomes in the UK: population based cohort study.

    abstract:OBJECTIVE:To assess the association between macrolide antibiotics prescribing during pregnancy and major malformations, cerebral palsy, epilepsy, attention deficit hyperactivity disorder, and autism spectrum disorder in children. DESIGN:Population based cohort study. SETTING:The UK Clinical Practice Research Datalink...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.m331

    authors: Fan H,Gilbert R,O'Callaghan F,Li L

    更新日期:2020-02-19 00:00:00

  • Suicide within 12 months of contact with mental health services: national clinical survey.

    abstract:OBJECTIVE:To describe the clinical circumstances in which psychiatric patients commit suicide. DESIGN:National clinical survey. SETTING:England and Wales. SUBJECTS:A two year sample of people who had committed suicide, in particular those who had been in contact with mental health services in the 12 months before de...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.318.7193.1235

    authors: Appleby L,Shaw J,Amos T,McDonnell R,Harris C,McCann K,Kiernan K,Davies S,Bickley H,Parsons R

    更新日期:1999-05-08 00:00:00

  • Outcome of breech delivery at term.

    abstract:OBJECTIVE:To compare neonatal mortality and morbidity in term infants presenting by the breech and delivered vaginally or by caesarean section. DESIGN:Population based comparison of outcomes. Data derived from the St Mary's maternity information system. SETTING:North West Thames Regional Health Authority, 1988-90. S...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.305.6856.746

    authors: Thorpe-Beeston JG,Banfield PJ,Saunders NJ

    更新日期:1992-09-26 00:00:00

  • Prevalence of microcephaly in Europe: population based study.

    abstract:OBJECTIVES: To provide contemporary estimates of the prevalence of microcephaly in Europe, determine if the diagnosis of microcephaly is consistent across Europe, and evaluate whether changes in prevalence would be detected using the current European surveillance performed by EUROCAT (the European Surveillance of Conge...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,多中心研究

    doi:10.1136/bmj.i4721

    authors: Morris JK,Rankin J,Garne E,Loane M,Greenlees R,Addor MC,Arriola L,Barisic I,Bergman JE,Csaky-Szunyogh M,Dias C,Draper ES,Gatt M,Khoshnood B,Klungsoyr K,Kurinczuk JJ,Lynch C,McDonnell R,Nelen V,Neville AJ,O'Mahony

    更新日期:2016-09-13 00:00:00

  • Preregistration house officers in the four Thames regions: I. Survey of education and workload.

    abstract:OBJECTIVE:To assess the education and workload of preregistration house officers in the four Thames regions. DESIGN:Postal questionnaire. SETTING:Teaching and non-teaching hospitals in the four Thames regions. PARTICIPANTS:1064 Preregistration house officers. RESULTS:Response rate was 70% (740 replies). Nine per ce...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.300.6726.713

    authors: Dent TH,Gillard JH,Aarons EJ,Crimlisk HL,Smyth-Pigott PJ

    更新日期:1990-03-17 00:00:00

  • Effects of preventive home visits to elderly people living in the community: systematic review.

    abstract:OBJECTIVE:To assess the effects of preventive home visits to elderly people living in the community. DESIGN:Systematic review. SETTING:15 trials retrieved from Medline, Embase, and the Cochrane controlled trial register. MAIN OUTCOME MEASURES:Physical function, psychosocial function, falls, admissions to institution...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,评审

    doi:10.1136/bmj.320.7237.754

    authors: van Haastregt JC,Diederiks JP,van Rossum E,de Witte LP,Crebolder HF

    更新日期:2000-03-18 00:00:00

  • Spontaneous pneumothorax: marker gas technique for predicting outcome of manual aspiration.

    abstract:OBJECTIVE:To determine whether in a patient with spontaneous pneumothorax the presence or absence of a pleural leak can be shown at the time of manual aspiration by use of a marker gas. Also, to find out if the technique can predict whether manual aspiration will be successful, hence avoiding the need for intercostal t...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.302.6771.262

    authors: Seaton D,Yoganathan K,Coady T,Barker R

    更新日期:1991-02-02 00:00:00

  • Contribution of dihydrotestosterone to male sexual behaviour.

    abstract:OBJECTIVE:To document the relative importance of endogenous sex steroids in modulating the frequency of orgasms, the dominant aspect of sexual behaviour in healthy eugonadal men. DESIGN:Measurement of adrenal and testicular sex steroids in a sample of army recruits and study of their relation to frequency of orgasms a...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.310.6990.1289

    authors: Mantzoros CS,Georgiadis EI,Trichopoulos D

    更新日期:1995-05-20 00:00:00

  • Re-evaluation of link between interpregnancy interval and adverse birth outcomes: retrospective cohort study matching two intervals per mother.

    abstract:OBJECTIVE:To re-evaluate the causal effect of interpregnancy interval on adverse birth outcomes, on the basis that previous studies relying on between mother comparisons may have inadequately adjusted for confounding by maternal risk factors. DESIGN:Retrospective cohort study using conditional logistic regression (mat...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.g4333

    authors: Ball SJ,Pereira G,Jacoby P,de Klerk N,Stanley FJ

    更新日期:2014-07-23 00:00:00

  • Teenage pregnancy and social disadvantage: systematic review integrating controlled trials and qualitative studies.

    abstract:OBJECTIVES:To determine the impact on teenage pregnancy of interventions that address the social disadvantage associated with early parenthood and to assess the appropriateness of such interventions for young people in the United Kingdom. DESIGN:Systematic review, including a statistical meta-analysis of controlled tr...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,meta分析,评审

    doi:10.1136/bmj.b4254

    authors: Harden A,Brunton G,Fletcher A,Oakley A

    更新日期:2009-11-12 00:00:00

  • Where have all the pennies gone? The work of Manchester Medical Audit Advisory Group.

    abstract::Medical audit has its critics, who point to the large sums of NHS cash that seem to be disappearing down a medical plughole. These criticisms are recognised by medical audit advisory groups but there are many reasons why the work of these groups has not yet resulted in many publications in journals or bumped up health...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.309.6947.98

    authors: Johnson R

    更新日期:1994-07-09 00:00:00

  • Effect of pay for performance on the management and outcomes of hypertension in the United Kingdom: interrupted time series study.

    abstract:OBJECTIVE:To assess the impact of a pay for performance incentive on quality of care and outcomes among UK patients with hypertension in primary care. DESIGN:Interrupted time series. SETTING:The Health Improvement Network (THIN) database, United Kingdom. PARTICIPANTS:470 725 patients with hypertension diagnosed betw...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.d108

    authors: Serumaga B,Ross-Degnan D,Avery AJ,Elliott RA,Majumdar SR,Zhang F,Soumerai SB

    更新日期:2011-01-25 00:00:00

  • Sequences specific for enterovirus detected in spinal cord from patients with motor neurone disease.

    abstract:OBJECTIVE:To investigate the association of enteroviruses with motor neurone disease, also known as amyotrophic lateral sclerosis. DESIGN:Analysis by enterovirus polymerase chain reaction of wax embedded material from spinal cords taken at necropsy from subjects with motor neurone disease and from age and sex matched ...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.308.6943.1541

    authors: Woodall CJ,Riding MH,Graham DI,Clements GB

    更新日期:1994-06-11 00:00:00

  • Diet and cancer.

    abstract::Accumulating data indicate that modifications in diet may reduce the risk of cancer by as much as one third and possibly by as much as two thirds. On the basis of the existing evidence, however, it is not possible to be certain which cancers are causally related to diet and what proportion of them are due to specific ...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,评审

    doi:10.1136/bmj.308.6944.1610

    authors: Austoker J

    更新日期:1994-06-18 00:00:00

  • Different systolic blood pressure targets for people with history of stroke or transient ischaemic attack: PAST-BP (Prevention After Stroke--Blood Pressure) randomised controlled trial.

    abstract:OBJECTIVE:To assess whether using intensive blood pressure targets leads to lower blood pressure in a community population of people with prevalent cerebrovascular disease. DESIGN:Open label randomised controlled trial. SETTING:99 general practices in England, with participants recruited in 2009-11. PARTICIPANTS:Peo...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1136/bmj.i708

    authors: Mant J,McManus RJ,Roalfe A,Fletcher K,Taylor CJ,Martin U,Virdee S,Greenfield S,Hobbs FD

    更新日期:2016-02-24 00:00:00

  • Risk of moderate to advanced kidney disease in patients with psoriasis: population based cohort study.

    abstract:OBJECTIVE:To determine the risk of chronic kidney disease in patients with psoriasis. DESIGN:Population based cohort study and nested cross sectional study. SETTING:Electronic medical records database based in United Kingdom. PARTICIPANTS:Cohort study: patients with psoriasis aged 18-90 each matched to up to five pa...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.f5961

    authors: Wan J,Wang S,Haynes K,Denburg MR,Shin DB,Gelfand JM

    更新日期:2013-10-15 00:00:00

  • Fibrinogen and lipid concentrations as risk factors for transient ischaemic attacks and minor ischaemic strokes.

    abstract:OBJECTIVES:To determine whether fibrinogen and lipid concentrations are risk factors for ischaemic stroke. DESIGN:Case-control study with a population based comparison within the overall study. SETTING:Oxfordshire community stroke project and a neurology clinic. SUBJECTS:105 patients who had a transient ischaemic at...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.303.6803.605

    authors: Qizilbash N,Jones L,Warlow C,Mann J

    更新日期:1991-09-14 00:00:00

  • The views of singlehanded general practitioners: a qualitative study.

    abstract:OBJECTIVES:To examine the concerns of singlehanded general practitioners working in an inner London area and to compare the views of general practitioners in partnerships. DESIGN:Qualitative analysis of semistructured interviews with a random sample of singlehanded general practitioners and a sample of general practit...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 杂志文章

    doi:10.1136/bmj.307.6904.607

    authors: Green JM

    更新日期:1993-09-04 00:00:00

  • Economic evaluation of hospital at home versus hospital care: cost minimisation analysis of data from randomised controlled trial.

    abstract:OBJECTIVES:To compare the costs of admission to a hospital at home scheme with those of acute hospital admission. DESIGN:Cost minimisation analysis within a pragmatic randomised controlled trial. SETTING:Hospital at home scheme in Leicester and the city's three acute hospitals. PARTICIPANTS:199 consecutive patients ...

    journal_title:BMJ (Clinical research ed.)

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1136/bmj.319.7224.1547

    authors: Jones J,Wilson A,Parker H,Wynn A,Jagger C,Spiers N,Parker G

    更新日期:1999-12-11 00:00:00