conclusions the results showed that the prevalence of pediculosis among the glogah county primary school students was less than the average percentages observed in other students inside and outside of iran. results based on a total of 300 pupils, 17 of them (5.7%) were infested with pediculus capitis. the prevalence rate was 6.8% in the boys and 4.8% in the girls, while the rate of infestation ...

CONFOUNDING FACTORS In transcriptomics experimentation, confounding factors frequently exist alongside the intended experimental factors and can severely influence the outcome of a transcriptome analysis. Confounding factors are regularly discussed in methodological literature, but their actual, practical impact on the outcome and interpretation of transcriptomics experiments is, to our knowled...

background: a crucial part of a case-control study is the selection of a sample of controls that represent the base-popula­tion from which cases were drawn. controls may be matched to cases by one or more potentially important confounding vari­ables, such as socioeconomic status. in the united kingdom, one method for control selection has been based on the pa­tient list of the general practice ...

Psychiatric epidemiologists use many tools, such as relative risks and the related odds such as relative risks and the related odds ratios, that were developed to study chronic ratios, that were developed to study chronic somatic disease. Cancer epidemiologists somatic disease. Cancer epidemiologists identify as a major advantage of relative identify as a major advantage of relative risks that,...

purpose: to evaluate the influence of different confounding factors on the effect of intravitreal triamcinolone acetonide injection for refractory diabetic macular edema. methods: in a prospective placebo-controlled randomized clinical trial, 88 eyes with refractory diabetic macular edema were randomly assigned into two groups including 45 in the treatment group (4 mg intravitreal triamcinolone...

background: although gestational diabetes is a well-known cause of pregnancy complications, its epidemiology in iran has not been studied systematically. the aim of this review of published data was to describe epidemiology of gestational diabetes in iran. methods: we searched medline, www.sid.ir, www.magiran.com, www.iranmedex.com, and www.irandoc.ac.ir sites through march 2009, and examined t...