Systematic Reviews of Observational Studies

Egger, Matthias; Smith, George Davey; Schneider, Martin

doi:10.1002/9780470693926.ch12

Cited by 148 publications

(104 citation statements)

References 114 publications

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“…[2] However, meta-analyses of observational studies cannot adequately incorporate the effects of confounding factors. [16] We found that age, wheezing phenotype, and differential exposure to risk factors need to be taken into consideration when interpreting crude 13 prevalence figures. Family history of atopy, maternal smoking, keeping pets, short duration of breastfeeding and family history of wheeze were all more common in whites, while socio-economic conditions also had an additional important confounding effect.…”

Section: Comparison With Other Studiesmentioning

confidence: 89%

Wheeze and asthma prevalence and related health‐service use in white and south Asian pre‐schoolchildren in the United Kingdom

Kuehni

Strippoli

Low

et al. 2007

Clin Experimental Allergy

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Section: Comparison With Other Studiesmentioning

confidence: 89%

Wheeze and asthma prevalence and related health‐service use in white and south Asian pre‐schoolchildren in the United Kingdom

Kuehni

Strippoli

Low

et al. 2007

Clin Experimental Allergy

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“…25 Epidemiological studies are prone to publication bias as only statistically significant findings may be published. 26 Other problems which are likely to be greater in meta-analyses of retrospective, nonrandomised studies include inadequate reporting of methods, variation in study design, variation in inclusion criteria and variation in presentation of results.…”

Section: Discussionmentioning

confidence: 99%

“…Some compare children who had NEC with those born ELBW who did not have NEC, others compare the outcomes of babies treated conservatively with those receiving surgery. Metaanalyses can be usefully performed on non-randomised studies, 25 in which case caveats must be drawn in the interpretation of the results. Clearly, in comparing ELBW infants who had NEC with those that did not get NEC, we are comparing two populations rather than two groups of individuals randomly allocated from the same population.…”

Section: Discussionmentioning

confidence: 99%

Neurodevelopmental outcomes of neonates with medically and surgically treated necrotizing enterocolitis

Rees¹,

Pierro²,

Eaton

2007

Archives of Disease in Childhood - Fetal and Neonatal Edition

357

209

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“…41 The Guideline Recommendation and Evidence Grading (GREG) scheme 42 (see Chapter 3, Box 1) was used to summarise the quality of evidence and also of subsequent recommendations.…”

Section: Figure 1 Flow Chart Of All Literature Reviewedmentioning

confidence: 99%

A systematic literature review of the effectiveness of non-pharmacological interventions to prevent wandering in dementia and evaluation of the ethical implications and acceptability of their use

Robinson

Hutchings²,

Corner³

et al. 2006

Health Technol Assess

104

105

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Systematic Reviews of Observational Studies

Cited by 148 publications

References 114 publications

Wheeze and asthma prevalence and related health‐service use in white and south Asian pre‐schoolchildren in the United Kingdom

Wheeze and asthma prevalence and related health‐service use in white and south Asian pre‐schoolchildren in the United Kingdom

Neurodevelopmental outcomes of neonates with medically and surgically treated necrotizing enterocolitis

A systematic literature review of the effectiveness of non-pharmacological interventions to prevent wandering in dementia and evaluation of the ethical implications and acceptability of their use

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