BACKGROUND Little is known about the return to sports after anterior cruciate ligament reconstruction and whether sex differences exist regarding the level and timing at which athletes return. HYPOTHESES Compared to school-aged girls, boys return to full sports earlier and at a higher frequency after surgery (1). Athletes who return to sports earlier will not have a higher incidence of subseq...

This paper tries to study the effect of information and communication technology on the skills of the third grade of high school students in Neka . Among 1400 students were randomly chosen. More than 302 ones were randomly selected(boys and girls). By a questionnaire which had 40 questions shows more than 87% of Alfa Cronbach coefficient. One group T-Test and independent T-test were analyzed an...

Elementary schools in many countries record an unequal representation of male and female teachers with female teachers in huge majority. At the same time, numerous studies reveal that girls generally outmatch boys in the majority of school subjects. Consequently, possible effects of teacher–pupil gender interaction are becoming an important topic in studies on pupils’ school achievement. The ai...

There is limited prospective research on the relation between school connectedness (i.e., the extent to which students feel accepted, valued, respected, and included in the school) and mental health symptoms in adolescents. A sample of 2,022 students (999 boys and 1,023 girls) ages 12 to 14 years were measured at 2 time points (12 months apart) on school connectedness and mental health symptoms...

background: this study aims to assess the frequency, causes, and places of injuries in a nationally representative sample of iranian children and adolescents, as well as the referral, places allocated for injured individuals. methods: this nationwide study was conducted in 2011-2012 among 13486 elementary, secondary and high‑school students who were selected by random cluster stratified multist...

BACKGROUND Urinary tract infections (UTI) are a common and important clinical problem in childhood. Upper urinary tract infections (i.e., acute pyelonephritis) may lead to renal scarring, hypertension, and end-stage renal disease. Despite the presence of simple and reliable methods of preliminary screening of children's urine, urinary tract infection continues to be under diagnosed. OBJECTIVE...

Gender Gaps in Primary School Achievement: A Decomposition into Endowments and Returns to IQ and Non-cognitive Factors In elementary school, girls typically outperform boys in languages and boys typically outperform girls in math. The determinants of these differences have remained largely unexplored. Using rich data from Dutch elementary schools, we decompose the differences in achievement int...

BACKGROUND It is a recurrent finding that adolescent girls report psychological symptoms in a higher degree compared with boys. The explanations for this difference vary, but the psychosocial school environment has never been a focus in these explanations. The aim of this study was to analyse whether psychosocial factors at school were associated with a high degree of psychological symptoms amo...