National Post-Perinatal Infant Mortality and Cot Death Study, Scotland 1981-82.

Area of Science:

• Pediatrics
• Public Health
• Epidemiology

Background:

• Post-perinatal infant mortality (PPIM) remains a significant concern in public health.
• Understanding the causes of infant deaths beyond the neonatal period is crucial for targeted interventions.

Purpose of the Study:

• To analyze the causes and rates of post-perinatal infant mortality in Scotland.
• To investigate the specific category of sudden infant deaths (cot deaths) and their potential explanations.

Main Methods:

• A retrospective study of all infant deaths aged 8-365 days in Scotland during 1981-1982.
• Categorization of deaths into birth-determined, accident/acquired disease, and cot deaths.
• Detailed analysis of cot deaths, including necropsy findings.

Main Results:

• A total of 763 PPIM deaths occurred, with a rate of 5.6 per 1000 live births.
• Cot deaths constituted the largest category (369 deaths), with a rate of 2.7 per 1000 live births.
• 167 cot deaths (approximately 45% of cot deaths) remained unexplained even after necropsy.

Conclusions:

• Sudden infant deaths (cot deaths) were the primary driver of post-perinatal mortality in Scotland during the study period.
• A significant proportion of cot deaths lacked clear explanations, highlighting the need for further research.
• The study identified demographic patterns, such as higher rates in boys and second-born infants.