Sources of error in registering suicide.

Area of Science:

• Epidemiology
• Public Health
• Mortality Statistics

Background:

• Accurate suicide statistics are crucial for public health interventions.
• Potential sources of error in cause-of-death registration can affect the reliability of suicide data.
• International comparisons of suicide rates require careful consideration of data quality.

Purpose of the Study:

• To evaluate the influence of theoretical sources of error on suicide registration.
• To assess the impact of specific registration errors (drowning, unknown cause) on Nordic suicide statistics.
• To determine if observed differences in suicide rates between Nordic countries are real or artifacts of data collection.

Main Methods:

• Analysis of cause-of-death statistics from Nordic countries.
• Identification and evaluation of specific error sources in suicide registration.
• Comparative analysis of suicide rates across different Nordic nations.

Main Results:

• Two primary sources of error were identified: registration as drowning and as 'unknown' cause of death.
• The probability of suicide in these error categories is low, involving small numbers.
• These error sources minimally influence the differences observed in suicide rates between Nordic countries.

Conclusions:

• The documented differences in suicide statistics among Nordic countries likely reflect true variations in suicide frequency.
• Registration errors, specifically for drowning and unknown causes, do not substantially confound international comparisons of suicide rates.
• Findings support the validity of existing suicide rate differentials across the Nordic region.