Mohammad Esmaeil Motlagh

Pediatrics Department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

[ 1 ] - Prevalence of Vitamin D Deficiency according to Climate Conditions among a Nationally Representative Sample of Iranian Adolescents: the CASPIAN-III Study

Background: Sunlight is the main source of vitamin D; therefore, environmental factors might have an important role in the high prevalence of hypovitaminosis D in children. This study aimed to assess the vitamin D status according to the climate of the living area in a nationally representative sample of Iranian adolescents. Material and Methods: This nationwide cross-sectional survey was perfo...

[ 2 ] - Regional disparity in hygienic behaviors of Iranian children and adolescents: The CASPIAN-IV study

Background: This study aimed to assess the pattern of hygienic behaviors of Iranian children and adolescents at national and sub-national levels according to the socioeconomic status (SES) of their living region.   Methods: Data were obtained from the fourth national school-based surveillance survey entitled, “CASPIAN-IV study” (2011-2012). It was conducted among 14,880 stud...

[ 3 ] - The relationship of serum vitamin D and Zinc in a nationally representative sample of Iranian children and adolescents: The CASPIAN-III study

Background: Vitamin D (VitD) deficiency is a common worldwide problem. Some previous studies have shown that both Zinc (Zn) and VitD deficiency are prevalent in Iran. This study aimed to assess the relationship of serum Zn and vitamin D levels in a nationally representative sample of Iranian children and adolescents.   Methods: This case-control study was conducted as a sub-study of a s...

[ 4 ] - Level of physical activity and screen time among Iranian children and adolescents at the national and provincial level: The CASPIAN-IV study

Background: There are few epidemiological reports on adherence to physical activity (PA) and screen-time (ST) recommendations among Iranian children and adolescents at the provincial level. We used nationally representative data to provide recent prevalence estimates of Iranian children who met the recommendations for PA and ST.   Methods: This nationwide study was conducted among 14,88...

[ 5 ] - Association of Sedentary Leisure Time with School Performance in Children and Adolescents: the CASPIAN-V Study

Background: Leisure time activities might be associated with school performance. This study aimed to investigate the association between leisure time variables, including television and computer using time, homework time and cell phone using time, with children’s school performance in a nationally representative sample of Ira...