375,926 papers found

We reviewed the literature on sleep in psychiatric disorders and evaluated the data by meta-analysis, a statistical method designed to combine data from different studies. A total of 177 studies with data from 7151 patients and controls were reviewed. Most psychiatric groups showed significantly reduced sleep efficienc…

AIMS/INTRODUCTION: Despite there being several meta-analyses on the effects of antidiabetic agents in patients with gestational diabetes mellitus, the reliability of their findings is a concern, mainly due to undetermined methodological quality of these studies. This study aimed to assess the methodological quality of…

BACKGROUND: This study used network meta-analysis to compare the effectiveness of different exercise prescription variables (e.g., duration, frequency, intensity, and type) in improving inhibitory control in children with ADHD. METHODS: A systematic search was conducted on databases like EBSCO, PubMed, Web of Science,…

Summarizing the results of research related to identifying potential predictors of hospital readmissions has been difficult because of conflicting results across studies. Using the techniques of meta-analysis, the results from 44 studies were examined in the present study. Overall, the mean readmission rate was 27%, wi…

For analysis of the main effects of SNPs, meta-analysis of summary results from individual studies has been shown to provide comparable results as "mega-analysis" that jointly analyzes the pooled participant data from the available studies. This fact revolutionized the genetic analysis of complex traits through large G…

A meta-analytic approach was used to summarize studies of cancer incidence among Native populations in the United States and Canada. Native males and females were found to have a significantly lower incidence of cancer for all sites combined. Among Native males, kidney cancer was found to exhibit significantly elevated…

Studies consistently show that total sleep deprivation (TSD) and measures of performance are negatively correlated. However, an accurate quantitative summary of the relationship between these variables has not yet been reported. After collection of the data from 27 relevant studies, meta-analytic techniques were used t…

The use of systemic tetracycline in the treatment of periodontal disease has been controversial. To investigate this controversy, we performed a quality assessment and attempted to perform a meta-analysis of 13 published studies. We evaluated the quality of the study protocol and data analysis and presentation for each…

OBJECTIVE: --To assess the efficacy of intrathecal therapy with tetanus antibody (antitetanus equine serum or human tetanus immune globulin) in neonatal and adult tetanus using meta-analytical techniques. DATA SOURCES: --Clinical trials identified by searching MEDLINE and by reviewing bibliographies of published artic…

BACKGROUND: Postpartum depression (PPD) is a common and serious psychiatric disorder occurring during the perinatal period, frequently accompanied by anxiety symptoms and associated with long-term adverse consequences for both maternal health and infant development. This study aimed to compare and rank the effectivenes…

OBJECTIVES: To assess how the inclusion of N-of-1 trial data into randomized controlled trial (RCT) meta-analyses impacts the magnitude and precision of yielded treatment effects, using amphetamines and methylphenidate for pediatric attention deficit hyperactivity disorder as a model. STUDY DESIGN AND SETTING: We…

A recent meta-analysis claimed decreasing prospective effects of acting with awareness and non-reacting, two facets of dispositional mindfulness, on subsequent anxiety and depressive symptoms. However, the meta-analytic cross-lagged effects were estimated while adjusting for a prior measurement of the outcome variable…

Many authors have published their results of first metatarsal osteotomies to reduce the intermetatarsal angle. Each study has shown some degree of success. The meta-analysis or research synthesis that follows is a method of providing a quantitative review of these studies. It is a procedure for aggregating numerous stu…

Meta-analysis of evaluation studies of rape education programs aimed at college students examined which program characteristics were related to participants' rape-supportive attitude change. Linear regression analyses revealed that: (a) published studies yielded greater attitude change than dissertations, presentations…

Meta-analysis has gained international recognition as a statistical approach to research synthesis. What is missing in research reviews, however, is the systematic compilation of results from non-experimentally designed studies. An approach is described which extends the rigours of integrative research review and meta-…

The purpose of this meta-analysis was to estimate the effects of heparin flush and saline flush solutions on maintaining patency, preventing phlebitis, and increasing duration in peripheral heparin locks. The average effect size (d value) across 15 studies with a total sample size of 3,490 was .0573 for patency (clotti…

An important tenet of attachment theory is that classification of security or insecurity as derived from the Strange Situation reflects the quality of an infant's relationship with its caregiver. One piece of evidence supporting this claim is the lack of concordance of classification between an infant and its mother an…