background and aims: infertility is one of the most important conditions in reproductive system and there is no reliable estimates for global prevalence of infertility. therefore, knowing the prevalence of infertility is important and can be effective in decision making. methods: we systematically reviewed all published papers in medline database and scopus (1988–2010). univariate and multivari...

background: to conduct a systematic review and meta-analysis on controlled treatment trials of meta-cognitive therapy for anxiety disorders. materials and methods: studies were included if they employed controlled methodology and treated people above 18 years with anxiety disorders. case studies (with less than 4 cases) and single case designed studies were excluded. a comprehensive literature ...

this paper uses the concept of meta-frontier to investigate the relationship between meta technology ratios (mtr) and different varieties in datepalms including; mazafati, rabi and zardan that are produced widely in sistan and baluchestan province of iran. we used a stratified sampling of 300 date farmers of this province in 2010, 2011 and 2012 and estimated a stochastic production frontier usi...

the present meta-analysis was conducted to provide a quantitative measure of the overall effects of task complexity on chinese efl learners’ language production. based on the strict inclusion criteria, 12 primary studies were synthesized according to key features. eleven of them were meta-analyzed to investigate effects of raising the resource-directing task complexity. results revealed that ...

smoking has become more prevalent in turkey than it has in those of western countries during the past decade. this study was conducted to make parameter estimations on gender related smoking habits with the minimum of variance. of the ninety-two researches related to smoking habits conducted from 1981 to 2003 in turkey, 60 were deemed appropriate for the application of meta analysis and meta re...

background and purpose: consideringbackground and purpose: considering the importance and necessity of competency-based education at a global level and with respect to globalization and the requirement of minimum competencies in medical fields, medical education communities and organizations worldwide have tried to determine the competencies, present frameworks and education models to respond t...

to conduct a systematic review and meta-analysis on controlled treatment trials of meta-cognitive therapy (mct) for anxiety disorders, studies were included if they employed controlled methodology and treated people above 18 years with anxiety disorders. case studies (with less than 4 cases) and single case designed studies were excluded. a comprehensive literature search identified 15 trials f...

the present study examined the effect of grouped meta-cognitive therapy on meta-cognitive beliefs of patients' suffering from generalized anxiety disorder. this research is a quasi-experimental with pre-test and post-test design with control group in which two groups of experiment and control are used. the present study population includes all state universities, islamic azad universities ...