Tehran University Medical Journal

Background: Developmental and behavioral disorders are the most prevalent problems in children after infection and trauma. Growth and development are influenced by genetic, social and environmental factors that incept of the early life of the fetal and neonatal periods. Due to the importance of the development in children, this study was conducted to determine the relationship between growth indices at birth and developmental status in infancy.
Methods: This case-control study investigated 6 to 18 months old infants, who referred to comprehensive health centers affiliated to Qazvin University of Medical Sciences, Iran, from August to December 2017. The sample size in this study was 200 infants and the participants were evaluated in two groups of 100 subjects (developmental delay and normal development). Anthropometric indices at birth were collected from healthcare records, and developmental status was measured using the ages and stages questionnaire (ASQ). The developmental status of the children was measured in five domains, i.e., motor (gross and fine motor skills), problem-solving, personal-social skills and communication. A significance level was considered statistically <0.05.
Results: The mean age of the infants in the developmental delay group was 12.63±1.72 months and the mean age of the infants in control group was 12.68±1.69 months and 45.6% of children in the developmental delay group were female and 54.4% of children in the developmental delay group were male. The most prevalence developmental delay in case group was in the area of personal-social domain (26.9%) and the lowest prevalence developmental delay in the area of the gross motor (12.7%). No correlation was found between head circumference (P= 0.32) and height at birth (P= 0.11) and developmental status. However, there was a significant relationship between developmental delay in the area of the communication (P= 0.04) and gross motor (P= 0.02) with birth weight. Pearson correlation indicate a correlation between developmental delay in the area of the gross motor and birth weight (P= 0.01).
Conclusion: It seems that birth weight was a factor that is associated with developmental delay. In this study low birth weight correlated with developmental delay in communication and gross motor aspects of ASQ.

Background: Developmental delay in preterm infants was estimated to be more common than term infants. Identifying the factors predisposing to developmental delay can help experts and health professionals in this field to prevent developmental delay of the infants, and leads to better management of the condition of them. This study aimed to evaluate and investigate the predisposing factors of developmental delay in preterm infants in the first year of their lives.
Methods: In this analytical cross-sectional study, 87 preterm infants were enrolled in the study by convenience sampling during the period of April 2016 to the end of March 2017 from two educational hospitals of Shahid Beheshti University of Medical Sciences (Imam Hussein hospital and Mahdiyeh hospital). Demographic and other initial data such as age, sex, gestational age, and the data about clinical problems observed at birth were collected through infants' medical records and were recorded in a special form for each infant. Also, the ASQ test was used to assess infants' developmental status at one year of age.