Early-Life Digital Exposure Patterns and their Association with Language Delay Severity and Developmental Outcomes in Children with Normal Hearing: A Cohort Based Analytical Study

Abstract

Objective: To evaluate the relationship between digital device exposure patterns and language delay severity, while examining their association with developmental outcomes in a carefully filtered pediatric cohort

Study Design: Retrospective cohort-based analytical study
Place and Duration of Study: This study was conducted at the College of Medicine, Al-Qadisiyah University, Iraq, from 1st December 2025 to 31st March 2026.

Methodology: 500 pediatric records were initially assessed. After applying strict inclusion criteria, 95 cases were retained for final analysis.

Results: A highly significant increase in daily screen time was observed with increasing language delay severity (P≤0.001), with strong pair-wise differences between mild vs. moderate and mild vs. severe groups (P≤0.001). Screen time showed a strong positive correlation with severity scores (r ≈ 0.70, P≤0.001). Conversely, sleep duration significantly decreased with increasing severity (P≤0.001), demonstrating a negative correlation (r ≈ −0.45, P ≤ 0.001). Early initiation of device use was significantly associated with poorer developmental outcomes (P≤0.001). The significant association between high screen exposure (>4 hours/day) and increased severity of language delay (P≤0.001). Additionally, developmental assessment outcomes were significantly influenced by device exposure patterns and age of initiation (P≤0.01). No significant differences were observed with respect to gender distribution.

Conclusion: Excessive screen exposure and early initiation of device use were strongly associated with increased language delay severity and poorer developmental outcomes in children. Reduced sleep duration further amplified these effects.