Inclusion of quasi-experimental studies in systematic reviews of health systems research

Rockers, Peter C.; Røttingen, John-Arne; Shemilt, Ian; Tugwell, Peter; Bärnighausen, Till

doi:10.1016/j.healthpol.2014.10.006

Cited by 76 publications

(71 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CBAs and DIDs aim to exploit variation in the exposure of interest both within and between observational units to control for all unobserved time-constant confounders. They are examples of QE studies that rely on covariate adjustment to control for confounding, which distinguishes them from QEs that utilise design-based approaches to control for confounding by exploiting exogenous variation in the exposure of interest [46]. Design-based approaches are considered a priori more credible or ‘stronger’ for causal inference than approaches that rely on covariate adjustment [47, 48].…”

Section: Resultsmentioning

confidence: 99%

What do we know about the effects of exposure to ‘Low alcohol’ and equivalent product labelling on the amounts of alcohol, food and tobacco people select and consume? A systematic review

2017

Self Cite

View full text Add to dashboard Cite

BackgroundExplicit labelling of lower strength alcohol products could reduce alcohol consumption by attracting more people to buy and drink such products instead of higher strength ones. Alternatively, it may lead to more consumption due to a ‘self-licensing’ mechanism. Equivalent labelling of food or tobacco (for example “Low fat” or “Low tar”) could influence consumption of those products by similar mechanisms. This systematic review examined the effects of ‘Low alcohol’ and equivalent labelling of alcohol, food and tobacco products on selection, consumption, and perceptions of products among adults.MethodsA systematic review was conducted based on Cochrane methods. Electronic and snowball searches identified 26 eligible studies. Evidence from 12 randomised controlled trials (all on food) was assessed for risk of bias, synthesised using random effects meta-analysis, and interpreted in conjunction with evidence from 14 non-randomised studies (one on alcohol, seven on food and six on tobacco). Outcomes assessed were: quantities of the product (i) selected or (ii) consumed (primary outcomes - behaviours), (iii) intentions to select or consume the product, (iv) beliefs associated with it consumption, (v) product appeal, and (vi) understanding of the label (secondary outcomes – cognitions).ResultsEvidence for impacts on the primary outcomes (i.e. amounts selected or consumed) was overall of very low quality, showing mixed effects, likely to vary by specific label descriptors, products and population characteristics. Overall very low quality evidence suggested that exposure to ‘Low alcohol’ and equivalent labelling on alcohol, food and tobacco products can shift consumer perceptions of products, with the potential to ‘self-licence’ excess consumption.ConclusionsConsiderable uncertainty remains about the effects of labels denoting low alcohol, and equivalent labels, on alcohol, food and tobacco selection and consumption. Independent, high-quality studies are urgently needed to inform policies on labelling regulations.Electronic supplementary materialThe online version of this article (doi:10.1186/s12889-016-3956-2) contains supplementary material, which is available to authorized users.

show abstract

Section: Resultsmentioning

confidence: 99%

What do we know about the effects of exposure to ‘Low alcohol’ and equivalent product labelling on the amounts of alcohol, food and tobacco people select and consume? A systematic review

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…This single‐arm, quasi‐experimental interventional study was conducted at the Raja Permaisuri Bainun Hospital, a regional referral hospital in Perak State, Malaysia. Such a study design was decided to be used in this hospital‐based, self‐initiated study due to its practicality, even though the representative of the findings could be limited by the absence of randomization . The study was approved by the Medical Research and Ethics Committee, Malaysia, prior to any data collection procedures.…”

Section: Methodsmentioning

confidence: 99%

“…Such a study design was decided to be used in this hospital-based, self-initiated study due to its practicality, even though the representative of the findings could be limited by the absence of randomization. [12,13] The study was approved by the Medical Research and Ethics Committee, Malaysia, prior to any data collection procedures. Only patients who provided written consent were recruited in the study.…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of a hospital-based education programme in improving knowledge of the use of nonsteroidal anti-inflammatory drugs among heart failure patients in a Malaysia regional hospital

Choong

Lew

George

et al. 2018

Journal of Pharmaceutical Health Services Research

View full text Add to dashboard Cite

Objectives The use of nonsteroidal anti‐inflammatory drugs (NSAIDs) in heart failure patients is known to be associated with a wide range of adverse events, including an increased risk of cardiovascular complications. This study aimed to evaluate the effectiveness of an education programme in improving the knowledge about the safety of NSAID use among the hospitalized heart failure patients. Method This was a single‐arm, quasi‐experimental study. It was undertaken in a regional referral centre in Perak State, Malaysia. Each recruited patient received an educational leaflet and a 10‐min counselling intervention by a clinical pharmacist. A 5‐item questionnaire was used to assess their knowledge before and after the intervention. Each correct answer was awarded with 1 point, and a patient with a total score of 3 points or above was considered having adequate knowledge. Key findings A total of 31 patients received the intervention and completed the assessment. They were mainly female (61%), with a median age of 68 (interquartile range (IQR) = 22) years. Of all the patients, four (13.3%) reported a long‐term use of NSAIDs, while only one (3.2%) reported the use of NSAIDs in 1 week before the hospitalization. The postintervention score (median = 3; IQR = 2) was shown to be significantly higher than the preintervention score (median = 1; IQR = 2; P = < 0.001). Additionally, the majority of the patients (86.7%) found the education programme was useful to avoid unnecessary NSAID use in the future. Conclusions Our findings suggest that the pharmacist‐initiated education programme is useful and could be used as a long‐term strategy to improve the knowledge about the safety of NSAID use in heart failure patients.

show abstract

“…Moreover, no studies were randomized-controlled trials, although qualitative appraisals for methodological rigor were applied. Systematic review research usually conducted with randomized-controlled trials; however, well-conducted controlled before-and-after studies are able to provide evidence for evidence synthesis (Rockers et al 2015). With randomized-controlled trials, meta-analysesthe highest hierarchy of evidence-based nursingwill be possible.…”

Section: Review Limitationsmentioning

confidence: 99%

Case management effectiveness for managing chronic illnesses in Korea: a systematic review

Joo

Liu

2018

International Nursing Review

View full text Add to dashboard Cite

show abstract

Inclusion of quasi-experimental studies in systematic reviews of health systems research

Cited by 76 publications

References 60 publications

What do we know about the effects of exposure to ‘Low alcohol’ and equivalent product labelling on the amounts of alcohol, food and tobacco people select and consume? A systematic review

What do we know about the effects of exposure to ‘Low alcohol’ and equivalent product labelling on the amounts of alcohol, food and tobacco people select and consume? A systematic review

Effectiveness of a hospital-based education programme in improving knowledge of the use of nonsteroidal anti-inflammatory drugs among heart failure patients in a Malaysia regional hospital

Case management effectiveness for managing chronic illnesses in Korea: a systematic review

Contact Info

Product

Resources

About