Association between maternal and cord blood thyroid hormones, and urine iodine concentration with fetal growth.

Objectives: We planned to evaluate the association of fetal and maternal thyroid hormones and maternal iodine status with neonates' anthropometric parameters.

Methods: In this cross-sectional study, levels of thyrotropin were measured in maternal serum in the first trimester of pregnancy, and thyrotropin (TSH) and free thyroxin (fT4) were measured in cord blood serum samples at birth. Urinary iodine concentration (UIC) levels in random urine samples of mothers were measured in the third trimester of pregnancy.

Validity and reliability of parent assessments of pubertal maturation among adolescent girls in Isfahan, Iran.

Objectives: The current paper presents the steps considered for validation of a questionnaire for assessment of sexual maturity among Iranian adolescent girls.

Methods: This cross-sectional study was performed in 2022 in Isfahan, Iran. Based on the Growth and Development Questionnaire that included both the Pubertal Development Scale (PDS) and Sexual Maturation Scale (SMS), two Persian questionnaires were prepared.

Association of Polycyclic Aromatic Hydrocarbons Urine Metabolites with Type 1 Diabetes.

Purpose: Polycyclic aromatic hydrocarbons (PAHs) are believed to be a possible factor in the development of cancer, ischemic heart disease, obesity, and cardiovascular disease. The objective of this study was to explore the association between certain metabolites of urinary PAH and type 1 diabetes (T1D).

Methods: In Isfahan City, a case-control study was carried out involving 147 T1D patients and an equal number of healthy individuals.

The Association between Exposure to Air Pollution and Type 1 Diabetes Mellitus: A Systematic Review and Meta-Analysis.

Background: This systematic review and meta-analysis aimed to overview the observational studies on the association of exposure to air pollution and type 1 diabetes mellitus (T1DM).

Materials And Methods: Based on PRISMA guidelines, we systematically reviewed the databases of PubMed, Scopus, Embase, and Web of Science databases to determine the association of air pollution exposure and T1DM. Quality assessment of the papers was evaluated using the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for observational studies.

Association between Sleep Duration and Early Pubertal Timing in Children and Adolescents: A Systematic Review and Meta-analysis.

Background: Early puberty increases the risk of diverse health outcomes during adolescence and beyond. Several studies have explored the links between short sleep duration and early puberty worldwide.

Objective: The current systematic review and meta-analysis aimed to evaluate the association between sleep duration and early pubertal timing based on published evidence systematically.

Factors related to glycemic control in children and adolescents with type 1 diabetes mellitus in Isfahan, Iran.

Purpose: Glycemic control is traditionally evaluated by monitoring of hemoglobin A1c (HbA1c). This study aims to explore factors related to glycemic control among pediatrics with type 1 diabetes mellitus (T1DM).

Methods: This cross-sectional study was conducted among 454 students aged 6-18 years with T1DM in 2018.

Economic inequality in prevalence of underweight and short stature in children and adolescents: the weight disorders survey of the CASPIAN-IV study.

Objective: The aim of this study was to determine the determinants of socio-economic inequality in the prevalence of short stature and underweight in Iranian children and adolescents.

Methods: This cross-sectional nationwide study was conducted on 36,486 participants, aged 6-18 years. This school-based surveillance (CASPIAN- IV) program and its complementary part on weight disorders evaluation was conducted in urban and rural areas of 30 provinces in Iran.

Association of Screen Time with Sleep Duration in School-Aged Children; a Nationwide Propensity Score‑Matched Analysis: The CASPIAN‑V Study.

Background: This study aims to determine the association of sleep duration with screen time in children and adolescents.

Study Design: A matched case-control study.

Methods: This nationwide study was conducted in 2015 among 14,274 students aged 7-18 years, and one of their parents who lived in 30 provinces in Iran.

Association of sleep duration with metabolic syndrome and its components in children and adolescents; a propensity score-matched analysis: the CASPIAN-V study.

Objective: This study aims to evaluate the association of sleep duration with metabolic syndrome (MetS) and its components in a pediatric population.

Methods: This multi-centric cross-sectional study was conducted in 2015 in 30 provinces of Iran. Participants consisted of 4200 school students aged 7-18 years, studied in a national school-based surveillance program (CASPIAN-V).

Association of benzene exposure with insulin resistance, SOD, and MDA as markers of oxidative stress in children and adolescents.

Benzene is a ubiquitous environmental pollutant with various health effects. It is reported that benzene exposure might be associated with insulin resistance in elderly adults. The aim of this study is to investigate the association between urinary benzene metabolite, trans, trans-muconic acid (t,t-ma) and markers of oxidative stress and insulin resistance in children and adolescents.

Association of dietary patterns with continuous metabolic syndrome in children and adolescents; a nationwide propensity score-matched analysis: the CASPIAN-V study.

Objective: This study aims to determine the association of dietary patterns with metabolic syndrome (MetS) and its components in children and adolescents.

Methods: This nationwide study was conducted in 2015 among 4200 students aged 7-18 years, who lived in 30 provinces in Iran. The analysis was conducted based on the propensity score using a matched case-control study design.

Effect of Exposure to Air Pollution on Placental Weight in Isfahan-Iran.

To determine the effect of Air Quality Index (AQI) in the first trimester of pregnancy on birth weight, placental weight, and the ratio of placental weight to the birth weight (pw-bw) in Isfahan. This cross-sectional study was done on 312 consecutive pregnant women in Beheshti Hospital in Isfahan city in 2013. Information on air pollution was received from the Environmental department of Isfahan.

Factors Associated with Screen Time in Iranian Children and Adolescents: The CASPIAN-IV Study.

Background: Prolonged screen time is frequent in children and adolescents. Implementing interventions to reduce physical inactivity needs to assess related determinants. This study aims to assess factors associated with screen time in a national sample of children and adolescents.

Is snack consumption associated with meal skipping in children and adolescents? The CASPIAN-IV study.

Purpose: The present inquiry set to assess the relationship between snack consumption and meal skipping in Iranian children and adolescents.

Methods: Overall, 14,880 students, aged 6-18 years, were selected via multistage cluster sampling method from rural and urban areas of 30 provinces of Iran. A validated questionnaire of food behaviors including questions on snacks consumption and taking/skipping meals was completed.

Association between screen time and snack consumption in children and adolescents: The CASPIAN-IV study.

Background: The relationship between screen time (ST) and the frequency of snack consumption in a national sample of Iranian children and adolescents was assessed. The present nationwide survey was conducted on 14,880 school students living in urban and rural areas of 30 provinces in Iran. Trained healthcare providers conducted the physical examination and completed the questionnaire of the World Health Organization - Global School-Based Student Health Survey (WHO-GSHS).