هدف: هدف پژوهش حاضر، ساخت و اعتبار­سنجی سیاهه آسیب‌شناسی روانشناختی نوجوانان در فضای مجازی بود. روش: روش آمیخته اکتشافی (کیفی-کمی) بدین منظور با استفاده از تحلیل مضمون مقالات مصاحبه‌های انجام‌شده متخصصان فعال مجازی، آسیب­ ها شناسایی شدند بر اساس آن ­ای ساخته شد. جامعه آماری بخش کیفی شامل مقالات، اساتید دانشگاه­ های اراک، اصفهان، امام خمینی قزوین شهر اراک بودند که نمونه هدفمند آنها انتخاب کمی بو...

The study was designed to examine the gender-related differences in maximum mechanical power output in various short-burst activities during growth. The subject sample consisted of four subgroups: 9 boys (14.11 +/- 0.6 yr), 9 boys (10.67 +/- 0.71 yr), 7 girls (14.29 +/- 0.49 yr), 7 girls (10.57 +/- 0.54 yr). We measured peak power (PP), mean power (MP), fatigue index (FI) during 30-s WAnT, squa...

Background: Many randomized trials involve measuring a continuous outcome such as pain, body weight or blood pressure at baseline and after treatment. In this paper, I compare four possibilities for how such trials can be analyzed: post-treatment; change between baseline and post-treatment; percentage change between baseline and post-treatment and analysis of covariance (ANCOVA) with baseline s...

OBJECTIVE To compare the effects of rigid gas-permeable contact lenses (RGPs) and soft contact lenses (SCLs) on myopia progression in children. METHODS We randomly assigned 116 subjects to wear RGPs or SCLs. Subjects underwent cycloplegic autorefraction, keratometry, and A-scan ultrasonographic axial length measurements at each annual visit. All analyses were conducted according to the origin...

OBJECTIVE To determine whether animal-assisted therapy (AAT) is associated with reductions in fear, anxiety, and depression in psychiatric patients before electroconvulsive therapy (ECT). MATERIALS AND METHODS Before their scheduled ECT treatment, 35 patients were assigned on alternate days to the treatment condition, consisting of a 15-minute AAT session, and the standard (comparison) condit...

هدف: پژوهش حاضر با هدف بررسی مقایسه اثربخشی گروه درمانی شناختی – رفتاری و ذهن ­آگاهی مبتنی بر شناخت کاهش رفتارهای پرخطر در معتادان ترک افیونی صورت گرفت. روش: روش این شبه آزمایشی طرح پیش آزمون پس همراه کنترل است. جامعه­ی آماری شامل کلیه افراد وابسته به مواد مراجعه کننده مرکز اعتیاد شبکه بهداشت درمان شهرستان سرپل ذهاب نیمه اول سال 1396 بود، نمونه­ گیری دسترس تعداد 36 نفر تشخیص وابستگی اساس معیاره...

BACKGROUND This study intended to simultaneously investigate the relationships between high-density lipoprotein (HDL) and homeostasis model assessment of insulin resistance (HOMA-IR) in medicated schizophrenic patients vs healthy controls. METHODS During a 1-year period, we recruited 37 medicated schizophrenic patients and 30 healthy controls. Metabolic syndrome-related biomarkers including i...

BACKGROUND Many randomized trials involve measuring a continuous outcome - such as pain, body weight or blood pressure - at baseline and after treatment. In this paper, I compare four possibilities for how such trials can be analyzed: post-treatment; change between baseline and post-treatment; percentage change between baseline and post-treatment and analysis of covariance (ANCOVA) with baselin...

Contrasts of means are often of interest because they describe the effect size among multiple treatments. High-quality inference of population effect sizes can be achieved through narrow confidence intervals (CIs). Given the close relation between CI width and sample size, we propose two methods to plan the sample size for an ANCOVA or ANOVA study, so that a sufficiently narrow CI for the popul...