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Table 3 Number of deaths at national level with unusable codes and percent in each category of unusable code

From: Improving quality of medical certification of causes of death in health facilities in Tanzania 2014–2019

Year Number of deaths with unusable code Signs, symptoms, Ill-defined COD (Cat 1) Impossible COD (Cat 2) Intermediate COD (Cat 3) Immediate COD (Cat 4) Insufficiently specified COD (Cat 5) % Total unuseable codes
2014 9536 0.3% 3.4% 29.8% 0.0% 66.5% 100%
2015 14,531 0.3% 1.4% 37.3% 0.0% 61.1% 100%
2016 14,607 0.2% 0.9% 37.6% 0.0% 61.3% 100%
2017 15,115 0.4% 1.0% 43.3% 0.0% 55.4% 100%
2018 11,574 11.4% 1.6% 36.8% 0.0% 50.2% 100%
Mean 13,073 2.5% 1.7% 37.0% 0.0% 58.9% 100%