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Pediatric Allergy and Immunology :... Nov 2015Dust mite sensitization plays a controversial role in the development of atopic dermatitis. Despite a lack of evidence for its efficacy, dust mite avoidance is commonly... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Dust mite sensitization plays a controversial role in the development of atopic dermatitis. Despite a lack of evidence for its efficacy, dust mite avoidance is commonly recommended for the prevention and treatment of atopic dermatitis. We aimed to evaluate whether dust mite avoidance strategies reduce the risk of developing atopic dermatitis in high-risk infants compared to randomized controls.
METHODS
Studies were obtained by searching MEDLINE, PubMed, Scopus, The Cochrane Library, and The Global Resource of Eczema Trials databases. We included randomized, controlled trials of high-risk infants treated with a dust mite avoidance intervention and assessed for atopic dermatitis. Data were extracted independently by two reviewers using predefined criteria.
RESULTS
Seven randomized controlled trials met our inclusion criteria (total n = 3040). Studies were largely unblinded but otherwise of reasonable quality. Three trials utilizing a dust mite avoidance approach but not additional interventions were combined in a meta-analysis. Dust mite avoidance provided no benefit in the prevention of atopic dermatitis (relative risk (RR) = 1.08, 95% confidence interval (CI) = 0.78-1.49, I(2) = 73%).
CONCLUSIONS
Dust mite avoidance strategies alone or in combination with additional allergen avoidance modalities do not decrease the risk of developing atopic dermatitis and, given the current state of the evidence, should not be recommended for this purpose. The utility of dust mite avoidance for the treatment of atopic dermatitis or for the prevention and treatment of asthma or seasonal rhinoconjunctivitis are outside the scope of this review.
Topics: Allergens; Animals; Antigens, Dermatophagoides; Dermatitis, Atopic; Environmental Exposure; Humans; Models, Statistical; Primary Prevention; Pyroglyphidae; Treatment Outcome
PubMed: 26235650
DOI: 10.1111/pai.12452 -
The Cochrane Database of Systematic... Apr 2016Intracranial venous thrombosis (ICVT) commonly presents with seizures in the acute period, and some people may develop recurrent seizures in the long term. The... (Review)
Review
BACKGROUND
Intracranial venous thrombosis (ICVT) commonly presents with seizures in the acute period, and some people may develop recurrent seizures in the long term. The prophylactic use of antiepileptic drugs (AEDs) for the management of post-ICVT seizures is controversial, and there is currently no consensus on the optimal management of post-ICVT seizures. This is an updated version of the Cochrane review first published in theCochrane Database of Systematic Reviews 2006, Issue 3.
OBJECTIVES
To assess the effects of AEDs for the primary and secondary prevention of seizures related to ICVT.(1) For the question of primary prevention, we aimed to examine whether AEDs reduce the likelihood of seizures in people who have had an ICVT but have not had a seizure.(2) For the question of secondary prevention, we aimed to examine whether AEDs reduce the likelihood of further seizures in people who have had an ICVT and at least one seizure.
SEARCH METHODS
For the latest update, we searched the Cochrane Epilepsy Group Specialized Register, the Cochrane Central Register of Controlled Trials (CENTRAL) via the Cochrane Register of Studies Online (CRSO), and MEDLINE (Ovid 1946 onwards) to 20 April 2015, and we checked the reference lists of articles retrieved from the searches.
SELECTION CRITERIA
We planned to include all randomised and quasi-randomised controlled trials in which participants with a diagnosis of ICVT were assigned to a treatment group (that is, receiving at least one AED) or control group (receiving placebo or no drug).
DATA COLLECTION AND ANALYSIS
Both review authors independently screened and assessed the methodological quality of the studies. If studies had been included in the review, one review author would have extracted the data and another would have checked the extracted data.
MAIN RESULTS
No relevant studies were found.
AUTHORS' CONCLUSIONS
There is no evidence to support or refute the use of antiepileptic drugs for the primary or secondary prevention of seizures related to intracranial venous thrombosis. Well-designed randomised controlled trials are urgently needed to inform practice. Since the last version of this review no new studies have been found.
Topics: Anticonvulsants; Humans; Intracranial Thrombosis; Primary Prevention; Secondary Prevention; Seizures; Venous Thrombosis
PubMed: 27098266
DOI: 10.1002/14651858.CD005501.pub4 -
Health Technology Assessment... Sep 2013Prophylactic aspirin has been considered to be beneficial in reducing the risks of heart disease and cancer. However, potential benefits must be balanced against the... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Prophylactic aspirin has been considered to be beneficial in reducing the risks of heart disease and cancer. However, potential benefits must be balanced against the possible harm from side effects, such as bleeding and gastrointestinal (GI) symptoms. It is particularly important to know the risk of side effects when aspirin is used as primary prevention--that is when used by people as yet free of, but at risk of developing, cardiovascular disease (CVD) or cancer. In this report we aim to identify and re-analyse randomised controlled trials (RCTs), systematic reviews and meta-analyses to summarise the current scientific evidence with a focus on possible harms of prophylactic aspirin in primary prevention of CVD and cancer.
OBJECTIVES
To identify RCTs, systematic reviews and meta-analyses of RCTs of the prophylactic use of aspirin in primary prevention of CVD or cancer. To undertake a quality assessment of identified systematic reviews and meta-analyses using meta-analysis to investigate study-level effects on estimates of benefits and risks of adverse events; cumulative meta-analysis; exploratory multivariable meta-regression; and to quantify relative and absolute risks and benefits.
METHODS
We identified RCTs, meta-analyses and systematic reviews, and searched electronic bibliographic databases (from 2008 September 2012) including MEDLINE, Cochrane Central Register of Controlled Trials, Database of Abstracts of Reviews of Effects, NHS Centre for Reviews and Dissemination, and Science Citation Index. We limited searches to publications since 2008, based on timing of the most recent comprehensive systematic reviews.
RESULTS
In total, 2572 potentially relevant papers were identified and 27 met the inclusion criteria. Benefits of aspirin ranged from 6% reduction in relative risk (RR) for all-cause mortality [RR 0.94, 95% confidence interval (CI) 0.88 to 1.00] and 10% reduction in major cardiovascular events (MCEs) (RR 0.90, 95% CI 0.85 to 0.96) to a reduction in total coronary heart disease (CHD) of 15% (RR 0.85, 95% CI 0.69 to 1.06). Reported pooled odds ratios (ORs) for total cancer mortality ranged between 0.76 (95% CI 0.66 to 0.88) and 0.93 (95% CI 0.84 to 1.03). Inclusion of the Women's Health Study changed the estimated OR to 0.82 (95% CI 0.69 to 0.97). Aspirin reduced reported colorectal cancer (CRC) incidence (OR 0.66, 95% CI 0.90 to 1.02). However, including studies in which aspirin was given every other day raised the OR to 0.91 (95% CI 0.74 to 1.11). Reported cancer benefits appeared approximately 5 years from start of treatment. Calculation of absolute effects per 100,000 patient-years of follow-up showed reductions ranging from 33 to 46 deaths (all-cause mortality), 60-84 MCEs and 47-64 incidents of CHD and a possible avoidance of 34 deaths from CRC. Reported increased RRs of adverse events from aspirin use were 37% for GI bleeding (RR 1.37, 95% CI 1.15 to 1.62), between 54% (RR 1.54, 95% CI 1.30 to 1.82) and 62% (RR 1.62, 95% CI 1.31 to 2.00) for major bleeds, and between 32% (RR 1.32, 95% CI 1.00 to 1.74) and 38% (RR 1.38, 95% CI 1.01 to 1.82) for haemorrhagic stroke. Pooled estimates of increased RR for bleeding remained stable across trials conducted over several decades. Estimates of absolute rates of harm from aspirin use, per 100,000 patient-years of follow-up, were 99-178 for non-trivial bleeds, 46-49 for major bleeds, 68-117 for GI bleeds and 8-10 for haemorrhagic stroke. Meta-analyses aimed at judging risk of bleed according to sex and in individuals with diabetes were insufficiently powered for firm conclusions to be drawn.
LIMITATIONS
Searches were date limited to 2008 because of the intense interest that this subject has generated and the cataloguing of all primary research in so many previous systematic reviews. A further limitation was our potential over-reliance on study-level systematic reviews in which the person-years of follow-up were not accurately ascertainable. However, estimates of number of events averted or incurred through aspirin use calculated from data in study-level meta-analyses did not differ substantially from estimates based on individual patient data-level meta-analyses, for which person-years of follow-up were more accurate (although based on less-than-complete assemblies of currently available primary studies).
CONCLUSIONS
We have found that there is a fine balance between benefits and risks from regular aspirin use in primary prevention of CVD. Effects on cancer prevention have a long lead time and are at present reliant on post hoc analyses. All absolute effects are relatively small compared with the burden of these diseases. Several potentially relevant ongoing trials will be completed between 2013 and 2019, which may clarify the extent of benefit of aspirin in reducing cancer incidence and mortality. Future research considerations include expanding the use of IPD meta-analysis of RCTs by pooling data from available studies and investigating the impact of different dose regimens on cardiovascular and cancer outcomes.
FUNDING
The National Institute for Health Research Health Technology Assessment programme.
Topics: Adult; Aged; Aspirin; Cardiovascular Diseases; Colorectal Neoplasms; Confidence Intervals; Female; Gastrointestinal Hemorrhage; Humans; Incidence; Male; Middle Aged; Neoplasms; Odds Ratio; Primary Prevention; Prognosis; Randomized Controlled Trials as Topic; Risk Assessment; Survival Analysis; United States
PubMed: 24074752
DOI: 10.3310/hta17430 -
Thrombosis and Haemostasis Mar 2022The efficacy and safety of aspirin for primary cardiovascular disease (CVD) prevention is controversial. The aim of this study was to investigate the efficacy and safety... (Meta-Analysis)
Meta-Analysis
Efficacy and Safety of Aspirin for Primary Cardiovascular Risk Prevention in Younger and Older Age: An Updated Systematic Review and Meta-analysis of 173,810 Subjects from 21 Randomized Studies.
AIMS
The efficacy and safety of aspirin for primary cardiovascular disease (CVD) prevention is controversial. The aim of this study was to investigate the efficacy and safety of aspirin in subjects with no overt CVD, with a focus on age as a treatment modifier.
METHODS AND RESULTS
Randomized trials comparing aspirin use versus no aspirin use or placebo were included. The primary efficacy outcome was all-cause death. The primary safety outcome was major bleeding. Secondary ischemic and bleeding outcomes were explored. Subgroup analyses were conducted to investigate the consistency of the effect sizes in studies including younger and older individuals, using a cut-off of 65 years. A total of 21 randomized trials including 173,810 individuals at a mean follow-up of 5.3 years were included. Compared with control, aspirin did not reduce significantly the risk of all-cause death (risk ratio: 0.96; 95% confidence interval: 0.92-1.00, = 0.057). Major adverse cardiovascular events were significantly reduced by 11%, paralleled by significant reductions in myocardial infarction and transient ischemic attack. Major bleeding, intracranial hemorrhage, and gastrointestinal bleeding were significantly increased by aspirin. There was a significant age interaction for death ( for interaction = 0.007), with aspirin showing a statistically significant 7% relative benefit on all-cause death in studies including younger patients.
CONCLUSION
The use of aspirin in subjects with no overt CVD was associated with a neutral effect on all-cause death and a modest lower risk of major cardiovascular events at the price of an increased risk in major bleeding. The benefit of aspirin might be more pronounced in younger individuals.
Topics: Age Factors; Aspirin; Cardiovascular Diseases; Heart Disease Risk Factors; Hemorrhage; Humans; Mortality; Platelet Aggregation Inhibitors; Primary Prevention; Treatment Outcome
PubMed: 34638150
DOI: 10.1055/a-1667-7427 -
The Cochrane Database of Systematic... Oct 2014Viral encephalitis is characterised by diverse clinical and epidemiological features. Seizures are an important clinical manifestation and associated with increased... (Review)
Review
BACKGROUND
Viral encephalitis is characterised by diverse clinical and epidemiological features. Seizures are an important clinical manifestation and associated with increased mortality and morbidity. Patients may have seizures during the acute illness or they may develop after recovery. There are no recommendations regarding the use of antiepileptic drugs for the primary or secondary prevention of seizures in patients with viral encephalitis.
OBJECTIVES
To assess the efficacy and safety of antiepileptic drugs for the primary and secondary prophylaxis of seizures in viral encephalitis. We intended to answer the following questions.1. Do antiepileptic drugs used as primary prophylaxis routinely for all patients with suspected or proven viral encephalitis reduce the risk of seizures during the acute illness and reduce neurological morbidity and mortality?2. Do antiepileptic drugs used as secondary prophylaxis routinely for all patients who have had at least one seizure due to suspected or proven viral encephalitis reduce the risk of further seizures during the acute illness and reduce neurological morbidity and mortality?
SEARCH METHODS
We searched the Cochrane Epilepsy Group Specialised Register (13 May 2014), the Cochrane Central Register of Controlled Trials (CENTRAL 2014, Issue 4) (April 2014), MEDLINE (Ovid, 1946 to 13 May 2014), the WHO ICTRP search portal (13 May 2014) and ClinicalTrials.gov (13 May 2014). We did not impose any language restrictions.
SELECTION CRITERIA
Randomised and quasi-randomised controlled trials in which patients were assigned to a treatment or control group (placebo or no drug).
DATA COLLECTION AND ANALYSIS
One author (SP) searched the publications by title, abstract and keywords and decided on their suitability for inclusion in the review. For any studies where it was unclear whether they would be suitable for inclusion, the co-authors (CR, BM) were consulted. The co-authors (CR, BM) evaluated the selected studies independently. Since there were no included studies, we carried out no data analysis.
MAIN RESULTS
We did not find any randomised or quasi-randomised controlled trials that compared the effects of antiepileptic drugs with placebo (or no drug) for the primary or secondary prevention of seizures in viral encephalitis. We identified two studies from the literature search where different antiepileptic drugs were used in patients with viral encephalitis, however both failed to meet the inclusion criteria. The first study included children with viral encephalitis where antiepileptic drugs were given. However, it is not clear how the diagnosis was established or the aetiologies. In addition, the randomisation and blinding method is not disclosed; the patients received a diverse and ill-defined range of antiepileptic drugs and adjunctive therapies, and none of the primary or secondary outcome measures was assessed. In the second study, adults with status epilepticus (of whom a proportion had viral encephalitis), who had failed to respond to two initial boluses of diazepam, were randomised to either valproate or diazepam. The study was open-label and the randomisation methodology was not disclosed; none of the primary or secondary outcomes were reported. Data on treatment response between the two arms for those patients with viral encephalitis are not presented for subgroup analysis; the Cochrane Epilepsy Group have contacted the authors for these data but have yet to receive a response.
AUTHORS' CONCLUSIONS
There is insufficient evidence to support the routine use of antiepileptic drugs for the primary or secondary prevention of seizures in viral encephalitis. There is a need for adequately powered randomised controlled trials in viral encephalitis patients to assess the efficacy and safety of antiepileptic drugs for the primary and secondary prophylaxis of seizures, which is an important clinical problem.
Topics: Anticonvulsants; Encephalitis, Viral; Humans; Primary Prevention; Secondary Prevention; Seizures
PubMed: 25300175
DOI: 10.1002/14651858.CD010247.pub2 -
International Journal of Cardiology Dec 2017Atrial fibrillation occurs frequently after open-heart surgery. It is associated with increased morbidity and mortality, longer hospital stays, and increased healthcare... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Atrial fibrillation occurs frequently after open-heart surgery. It is associated with increased morbidity and mortality, longer hospital stays, and increased healthcare costs. Prophylactic administration of colchicine may mitigate post-operative atrial fibrillation (POAF).
METHODS
We searched PubMed, ClinicalTrials.gov and CENTRAL databases to identify randomized controlled trials (RCTs) that; (1) compared prophylactic use of colchicine to placebo, or usual care, in patients with sinus rhythm who underwent elective open-heart surgery and (2) reported POAF-incidence. We excluded trials focused on incidence of atrial fibrillation after percutaneous interventions or colchicine treatment of diagnosed pericarditis or post-pericardiotomy-syndrome. A random-effects model was used to pool data for POAF-incidence as the primary outcome and for drug-related adverse effects, major adverse events (death and stroke), and hospital length-of-stay as secondary outcomes.
RESULTS
We included five RCTs (1412 patients). Colchicine treatment reduced POAF-events by 30% versus placebo or usual care (18% vs. 27%, risk ratio (RR) 0.69, 95% confidence interval (CI) 0.57 to 0.84, p=0.0002). Adverse drug-related effects, especially gastrointestinal intolerance, increased with colchicine; (21% vs. 8.2%, RR 2.52, 95% CI 1.62 to 3.93, p<0.0001). However, major adverse events were unchanged (3.2% vs. 3.2%, RR 0.96, 95% CI 0.48 to 1.95, p=0.92). Length-of-stay decreased by 1.2days with colchicine (95% CI -1.89 to -0.44, p=0.002).
CONCLUSION
Colchicine demonstrated superior efficacy versus usual care for prevention of atrial fibrillation after cardiac surgery. Moreover, colchicine treatment was associated with shorter hospital stays. These benefits outweigh increased risk of adverse drug-related effects; although further work is needed to minimize gastrointestinal effects.
Topics: Atrial Fibrillation; Cardiac Surgical Procedures; Colchicine; Humans; Postoperative Complications; Primary Prevention; Randomized Controlled Trials as Topic
PubMed: 28918897
DOI: 10.1016/j.ijcard.2017.08.039 -
Public Health Nursing (Boston, Mass.) Mar 2021To synthesize the best available qualitative evidence on the perceptions of Aboriginal and Torres Strait Islander Australians (hereafter, respectfully referred to as...
OBJECTIVE
To synthesize the best available qualitative evidence on the perceptions of Aboriginal and Torres Strait Islander Australians (hereafter, respectfully referred to as Indigenous Australians) toward participation in cardiovascular primary prevention programs.
BACKGROUND
In 2017, cardiovascular disease was the leading cause of premature mortality in Indigenous Australians, accounting for 11.5% of all deaths. Health risk behaviors such as smoking, physical inactivity, poor nutrition, and obesity largely contribute to this burden of disease.
METHODS
A search using MEDLINE, CINAHL, EMBASE, PubMed, Google Scholar, MedNar, ProQuest and Index to Theses for published and unpublished studies was conducted in January 2020. The methodological quality of the included studies was independently assessed by two reviewers using the Joanna Briggs Institute (JBI) critical appraisal tool. Data extraction and meta-aggregation were conducted in accordance with JBI methodology.
RESULTS
Eleven studies were included. Three synthesized findings were developed (a) social and community support affect participants' experiences of prevention programs; (b) structural drivers and social determinants influence Indigenous Australians experiences and participation in prevention programs and health risk behavioral change; and (c) a personal desire to change behaviors and participate in prevention programs requires development of knowledge regarding healthy lifestyles and creation of new social norms.
CONCLUSIONS
Indigenous Australians participation in primary prevention for cardiovascular risk factors and adoption of a healthy lifestyle are influenced by social support, social determinants, and personal desire. Future programs need to tackle the structural drivers and facilitate a supportive environment to assist in health risk behavior change.
Topics: Australia; Humans; Native Hawaiian or Other Pacific Islander; Primary Prevention; Racial Groups; Social Support
PubMed: 33216386
DOI: 10.1111/phn.12837 -
BMC Health Services Research Sep 2016The use of e-health and m-health technologies in health promotion and primary prevention among older people is largely unexplored. This study provides a systematic... (Review)
Review
BACKGROUND
The use of e-health and m-health technologies in health promotion and primary prevention among older people is largely unexplored. This study provides a systematic review of the evidence on the scope of the use of e-health and m-health tools in health promotion and primary prevention among older adults (age 50+).
METHODS
A systematic literature review was conducted in October 2015. The search for relevant publications was done in the search engine PubMed. The key inclusion criteria were: e-health and m-health tools used, participants' age 50+ years, focus on health promotion and primary prevention, published in the past 10 years, in English, and full-paper can be obtained. The text of the publications was analyzed based on two themes: the characteristics of e-health and m-health tools and the determinants of the use of these tools by older adults. The quality of the studies reviewed was also assessed.
RESULTS
The initial search resulted in 656 publications. After we applied the inclusion and exclusion criteria, 45 publications were selected for the review. In the publications reviewed, various types of e-health/m-health tools were described, namely apps, websites, devices, video consults and webinars. Most of the publications (60 %) reported studies in the US. In 37 % of the publications, the study population was older adults in general, while the rest of the publications studied a specific group of older adults (e.g. women or those with overweight). The publications indicated various facilitators and barriers. The most commonly mentioned facilitator was the support for the use of the e-health/m-health tools that the older adults received.
CONCLUSIONS
E-health and m-health tools are used by older adults in diverse health promotion programs, but also outside formal programs to monitor and improve their health. The latter is hardly studied. The successful use of e-health/m-health tools in health promotion programs for older adults greatly depends on the older adults' motivation and support that older adults receive when using e-health and m-health tools.
Topics: Aged; Global Health; Health Promotion; Healthy Lifestyle; Humans; Internet; Mobile Applications; Motivation; Primary Prevention; Telemedicine
PubMed: 27608677
DOI: 10.1186/s12913-016-1522-3 -
The Cochrane Database of Systematic... Oct 2014Suicide is a leading cause of death among post-secondary students worldwide. Suicidal thoughts and planning are common among post-secondary students. Previous reviews... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Suicide is a leading cause of death among post-secondary students worldwide. Suicidal thoughts and planning are common among post-secondary students. Previous reviews have examined the effectiveness of interventions for symptomatic individuals; however, many students at high risk of suicide are undiagnosed and untreated.
OBJECTIVES
We evaluated the effect on suicide and suicide-related outcomes of primary suicide prevention interventions that targeted students within the post-secondary setting.
SEARCH METHODS
We searched the following sources up to June 2011: Specialised Registers of two Cochrane Groups, Cochrane Central Register of Controlled Trials, and nine other databases, trial registers, conference proceedings, and websites of national and international organizations. We screened reference lists and contacted authors of included studies to identify additional studies. We updated the search in November 2013; we will include these results in the review's next update.
SELECTION CRITERIA
We included studies that tested an intervention for the primary prevention of suicide using a randomized controlled trial (RCT), controlled before-and-after (CBA), controlled interrupted time series (CITS), or interrupted time series (ITS) study design. Interventions targeted students within the post-secondary setting (i.e. college, university, academy, vocational, or any other post-secondary educational institution) without known mental illness, previous suicide attempt or self-harm, or suicidal ideation. Outcomes included suicides, suicide attempts, suicidal ideation, changes in suicide-related knowledge, attitudes and behavior, and availability of means of suicide.
DATA COLLECTION AND ANALYSIS
We used standardized electronic forms for data extraction, risk of bias and quality of evidence determination, and analysis. We estimated standardised mean differences (SMD) with 95% confidence intervals (CIs). We analysed studies by intervention type and study design. We summarized RCT effect sizes using random-effects models meta-analyses; and analysed statistical heterogeneity using the Chi(2) test and I(2) statistic. We described narratively the results from studies that used other study designs.
MAIN RESULTS
Eight studies met inclusion criteria. They were heterogeneous in terms of participants, study designs, and interventions. Five of eight studies had high risk of bias. In 3 RCTs (312 participants), classroom-based didactic and experiential programs increased short-term knowledge of suicide (SMD = 1.51, 95% CI 0.57 to 2.45; moderate quality evidence) and knowledge of suicide prevention (SMD = 0.72, 95% CI 0.36 to 1.07; moderate quality evidence). The effect on suicide prevention self-efficacy in one RCT (152 participants) was uncertain (SMD = 0.20, 95% CI -0.13 to 0.54; low quality evidence). One CBA analysed the effects of an institutional policy that restricted student access to laboratory cyanide and mandated professional assessment for suicidal students. The incidence of student suicide decreased significantly at one university with the policy relative to 11 control universities, 2.00 vs. 8.68 per 100,000 (Z = 5.90; P < 0.05). Four CBAs explored effects of training 'gatekeepers' to recognize and respond to warning signs of emotional crises and suicide risk in students they encountered. The magnitude of effect sizes varied between studies. Gatekeeper training enhanced short-term suicide knowledge in students, peer advisors residing in student accommodation, and faculty and staff, and suicide prevention self-efficacy among peer advisors. There was no evidence of an effect on participants' suicide-related attitudes or behaviors. One CBA found no evidence of effects of gatekeeper training of peer advisors on suicide-related knowledge, self-efficacy, or gatekeeper behaviors measured four to six months after intervention.
AUTHORS' CONCLUSIONS
We found insufficient evidence to support widespread implementation of any programs or policies for primary suicide prevention in post-secondary educational settings. As all evaluated interventions combined primary and secondary prevention components, we were unable to determine the independent effects of primary preventive interventions. Classroom instruction and gatekeeper training increased short-term suicide-related knowledge. We found no studies that tested the effects of classroom instruction on suicidal behavior or long-term outcomes. Limited evidence suggested minimal longer-term effects of gatekeeper training on suicide-related knowledge, while no evidence was found evaluating its effect on suicidal behavior. A policy-based suicide intervention reduced student suicide, but findings have not been replicated. Our findings are limited by the overall low quality of the evidence and the lack of studies from middle- and low-income countries. Rigorously designed studies should test the effects of preventive interventions on important health outcomes, including suicidal ideation and behavior, in varying post-secondary settings.
Topics: Education, Graduate; Humans; Primary Prevention; Randomized Controlled Trials as Topic; Secondary Prevention; Suicidal Ideation; Universities; Suicide Prevention
PubMed: 25353703
DOI: 10.1002/14651858.CD009439.pub2 -
BMJ Global Health Feb 2023Respiratory syncytial virus (RSV) is the principal cause of acute lower respiratory infections (ALRI) among infants worldwide, and an important cause of morbidity,...
Impact of breastfeeding on the incidence and severity of respiratory syncytial virus (RSV)-associated acute lower respiratory infections in infants: a systematic review highlighting the global relevance of primary prevention.
BACKGROUND
Respiratory syncytial virus (RSV) is the principal cause of acute lower respiratory infections (ALRI) among infants worldwide, and an important cause of morbidity, hospitalisation and mortality. While infants are universally exposed to RSV, most mortality occurs among normal term infants from low-income and middle-income countries. Breastfeeding has been suggested to have a protective effect against RSV infection. This study aims to determine the association of breastfeeding on the frequency and severity of RSV-associated ALRI among infants.
METHODS
A systematic review was conducted using keywords and Medical Subject Headings on MEDLINE, PubMed, Google Scholar, EMBASE, MedRxiv and Cochrane Central Register of Controlled Trials. Full-text articles published in English from 2000 to 2021 that studied exclusively or partially breastfed infants who developed RSV-associated ALRI <12 months of age were included. Covidence software-based evidence extraction and Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocol guidelines were followed. Quality of evidence was analysed using UK National Service Framework grading and the risk-of-bias assessment using Robvis.
RESULTS
Among 1368 studies screened, 217 qualified full-text review and 198 were excluded based on pre-agreed criteria. Nineteen articles published from 12 countries that included 16 787 infants from 31 countries (of which 8 middle-income) were retained for analysis. Results indicate that non-breastfeeding practices pose a significant risk for severe RSV-associated ALRI and hospitalisation. Exclusive breastfeeding for >4-6 months significantly lowered hospitalisation, length of stay, supplemental oxygen demand and admission to intensive care units.
CONCLUSION
In the context of no effective or standardised treatment for established RSV-associated ALRI, available evidence suggest that breastfeeding is associated with lower frequency and severity of RSV-associated ALRI, based on observational studies of variable grades of evidence and risk-of-bias. With both exclusive and partial breastfeeding benefiting infants who develop RSV-associated ALRI, breastfeeding should be promoted globally as an adjunct primary prevention; in addition to emerging immunoprophylaxis and maternal immunisation strategies.
Topics: Female; Infant; Humans; Respiratory Syncytial Viruses; Breast Feeding; Incidence; Respiratory Tract Infections; Primary Prevention
PubMed: 36746518
DOI: 10.1136/bmjgh-2022-009693