Quality of cause of death certification at an academic hospital in Cape Town, South Africa
AbstractObjectives. To investigate the quality of cause of death
certification and assess the level of under-reporting of HIV/
AIDS as a cause of death at an academic hospital.
Design. Cross-sectional descriptive retrospective review of
death notification forms (DNFs) of deaths due to natural
causes in an academic hospital in Cape Town during 2004.
Errors in cause of death certification and ability to code causes
of death according to the 10th revision of the International
Statistical Classification of Diseases and Related Health Problems
(ICD-10) were assessed. The association between serious
errors and age, gender, cause of death and hospital ward was
analysed. A sample of DNFs (N=243) was assessed for level of
under-reporting of HIV/AIDS.
Results. A total of 983 death certificates were evaluated.
Almost every DNF had a minor error; serious errors were
found in 32.2% (95% confidence interval (CI) 29.3 - 35.1%).
Errors increased with patient age, and cause of death was
the most important factor associated with serious errors.
Compared with neoplasms, which had the lowest error rate,
the odds ratios for errors in endocrine and metabolic diseases
and genito-urinary diseases were 17.2 (95% CI 8.7 - 34.0) and
17.3 (95% CI 7.8 - 38.2), respectively. Based on the sub-sample,
the minimum prevalence of HIV among the deceased patients
was 15.7% (95% CI 11.1 - 20.3%) and the under-reporting of
deaths due to AIDS was 53.1% (95% CI 35.8 - 70.4%).
Conclusion. Errors were sufficiently serious to affect
identification of underlying cause of death in almost a third
of the DNFs, confirming the need to improve the quality of
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