Hemoglobin Screening Independently Predicts All-Cause Mortality

Area of Science:

• Biomedical Science
• Epidemiology
• Insurance Medicine

Background:

• Accurate mortality risk assessment is crucial for life insurance underwriting.
• Traditional risk factors include laboratory tests, blood pressure, and build.
• The incremental value of hemoglobin testing in this context requires further investigation.

Purpose of the Study:

• To determine if incorporating hemoglobin testing improves mortality risk prediction for life insurance applicants.
• To assess the independent contribution of hemoglobin levels to risk stratification.
• To analyze age and sex-specific associations between hemoglobin levels and mortality.

Main Methods:

• Analysis of hemoglobin test results from 1993-2007 for life insurance applicants.
• Vital status determined via Social Security Death Master File follow-up through 2011.
• Statistical analysis stratified by age and sex, with and without other risk factors.

Main Results:

• Low hemoglobin levels (≤12.0 g/dL in females 50+, ≤13.0 g/dL in all males) correlated with increased mortality risk.
• High hemoglobin levels (>15.0 g/dL in females, >16.0 g/dL in males) also indicated elevated mortality risk.
• These associations were independent of other tested risk factors.

Conclusions:

• Hemoglobin testing provides additional, independent risk assessment beyond traditional factors for life insurance applicants.
• Findings are consistent with previous studies in older populations.
• Further research is needed for younger populations due to limited data and disease prevalence.