World journal of pediatric surgery · 2026
Factors associated with first recurrence of accidental foreign body incidents: a retrospective cohort study in children.
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Liang Jianfeng, Zhou Litou, Xu Yan
Аннотация
BACKGROUND: Foreign body incidents are common pediatric emergencies, but evidence on factors associated with first recurrence is limited. This study aims to identify risk factors for first recurrence using large single-center data.
METHODS: We conducted a retrospective cohort study of 48 197 children at a tertiary hospital (2020-2025). Kaplan-Meier analysis and multivariate Cox regression were performed. Schoenfeld residuals assessed the PH assumption; piecewise Cox models served as sensitivity analyses for age group and anatomical location, which violated it.
RESULTS: In a large single-center retrospective cohort of 48 197 children (median follow-up 1096 days), 3469 (7.2%) experienced a first recurrence. Adjusted recurrence hazards were higher for children aged 3 to <7 years (hazard ratio (HR)=1.19, 95% confidence interval (CI) 1.08 to 1.31), 1 to <3 years (HR=1.51, 95% CI 1.37 to 1.66) and <1 year (HR=1.30, 95% CI 1.10 to 1.55) than for children aged ≥7 years. Compared with the location of respiratory tract incidents, hazards were higher for the urogenital tract (HR=5.13, 95% CI 4.29 to 6.14) and soft-tissue incidents (HR=1.39, 95% CI 1.20 to 1.61), but lower for the digestive tract (HR=0.86, 95% CI 0.79 to 0.94) and nasal incidents (HR=0.85, 95% CI 0.77 to 0.95). Piecewise Cox regression in follow-up-window analyses showed that associations with age and anatomical location varied over time.
CONCLUSIONS: Recurrence risk after a first foreign-body event in children varies during follow-up. These findings may help clinicians identify children, particularly younger children and those with urogenital foreign-body events, who could benefit from targeted caregiver counseling and early follow-up. Risk-stratified prevention strategies could account for the time-varying nature of risk recurrence.
METHODS: We conducted a retrospective cohort study of 48 197 children at a tertiary hospital (2020-2025). Kaplan-Meier analysis and multivariate Cox regression were performed. Schoenfeld residuals assessed the PH assumption; piecewise Cox models served as sensitivity analyses for age group and anatomical location, which violated it.
RESULTS: In a large single-center retrospective cohort of 48 197 children (median follow-up 1096 days), 3469 (7.2%) experienced a first recurrence. Adjusted recurrence hazards were higher for children aged 3 to <7 years (hazard ratio (HR)=1.19, 95% confidence interval (CI) 1.08 to 1.31), 1 to <3 years (HR=1.51, 95% CI 1.37 to 1.66) and <1 year (HR=1.30, 95% CI 1.10 to 1.55) than for children aged ≥7 years. Compared with the location of respiratory tract incidents, hazards were higher for the urogenital tract (HR=5.13, 95% CI 4.29 to 6.14) and soft-tissue incidents (HR=1.39, 95% CI 1.20 to 1.61), but lower for the digestive tract (HR=0.86, 95% CI 0.79 to 0.94) and nasal incidents (HR=0.85, 95% CI 0.77 to 0.95). Piecewise Cox regression in follow-up-window analyses showed that associations with age and anatomical location varied over time.
CONCLUSIONS: Recurrence risk after a first foreign-body event in children varies during follow-up. These findings may help clinicians identify children, particularly younger children and those with urogenital foreign-body events, who could benefit from targeted caregiver counseling and early follow-up. Risk-stratified prevention strategies could account for the time-varying nature of risk recurrence.