386,595 papers found

We identified 24 modern studies of childhood exposures to lead in relation to IQ. From this population, 12 that employed multiple regression analysis with IQ as the dependent variable and lead as the main effect and that controlled for nonlead covariates were selected for a quantitative, integrated review or meta-analy…

PURPOSE: To evaluate the effects of various cleaning methods on the bond strength between lithium disilicate (LS) ceramics and resin cement under short- and long-term aging conditions using network meta-analysis (NMA) and pairwise meta-analysis (PMA). STUDY SELECTION: An electronic search of seven databases (PubMed, S…

A meta-analysis was carried out of the data from two double-blind, multi-centre studies with identical methodology which compared the effectiveness of treatment of elderly patients with zuclopenthixol and with other antipsychotic drugs. In one study, patients were treated for 4 weeks with either zuclopenthixol or melpe…

During the 1980's social cognitive theory has evolved as an explanation of human behavior. One of this theory's component constructs, self-efficacy, has received increasing attention as an antecedent to health related outcomes. The results of a meta-analysis examining studies which employed the construct of self-effica…

The objective of this study is to investigate the strength of the epidemiological evidence for a relationship between smoking and cervical cancer by analysis of recent literature. I conducted a meta-analysis of all eligible case-control studies published in English from 1977 to July 1990, with the primary intent of exa…

In the first part the statistical methods of meta-analysis are discussed. Meta-analysis is considered as a statistical tool for quantitatively summarizing the results of clinical trials with comparable aims (treatments) and designs. Meta-analysis can be based on the significance probabilities or effect values. The last…

Although penicillin has been the antibiotic of choice for therapy of Group A beta-hemolytic streptococcal pharyngitis for more than four decades, reports of bacteriologic and clinical treatment failures with penicillin have increased in recent years. We conducted a meta-analysis of 19 studies to examine whether oral ce…

BackgroundOsteoarthritis (OA), a prevalent degenerative joint disease causing pain and disability, burdens global health. Acupotomy offers a minimally invasive alternative to surgery but faces limitations like variable efficacy. Combining acupotomy with oral pharmacotherapy (conventional or herbal medicine) may optimiz…

The relation of marital discord to the behavior problems of children was examined through a meta-analysis of the results of prior research. The sample comprised all published studies through 1988 that met criteria for the meta-analysis and that could be located through a combined computer and hand search of the literat…

Although CBT has been found to be effective in the treatment of eating disorders, it is not clear if there are differences between treatment formats. We conducted a network meta-analysis (NMA) of randomized trials of broadly defined CBT comparing individual, group, guided self-help (GSH) and unguided self-help (USH) wi…

Abstract The aim of this meta-analysis was to compare the efficacy and safety profile of manidipine 20 mg with that of amlodipine 10 mg. A systematic research of quantitative data produced or published between 1995 and 2009 was performed. Head-to-head randomized controlled trials (RCTs) of 12 months minimum duration re…

This report presents a meta-analysis of a series of published 16PF findings which describe score profiles of nine groups of substance users/abusers, a nonuser comparison group, seven psychiatric groups, a group of criminals, and a group of gang delinquents. Analytical procedures include K Means Clustering, Cattell's rp…

BACKGROUND: Since the results obtained in controlled studies of antiviral treatment of chronic hepatitis by the hepatitis B virus are frequently insignificant the authors have undertaken a combined study of the different controlled trials with the meta-analysis technique. METHODS: The results of 7 controlled trials of…

Using a method of literature review known as meta-analysis, 81 articles were selected describing comparative research into possible differences between two or more of the following groups: nonsuicidals, suicide ideators, first-ever attempters, nonlethal repeaters, and suicides. Differential characteristics are describe…

The aim of the present study was to perform a meta-analysis of published studies in an attempt to determine the mean and range of normal ambulatory blood pressure. Twenty-two studies, including a total of 2638 subjects, were reviewed. Most studies were compatible with a mean 24-h ambulatory pressure in the range of 115…

Because selection of studies for a literature review influences conclusions, inclusion criteria are of utmost importance. For a meta-analysis of studies testing effects of patient education on preventive behaviors, we present the framework and concepts used for setting inclusion criteria for primary studies. We also pr…