Figure 1
From: Algorithms for enhancing public health utility of national causes-of-death data
Number of country-years of cause-of-death data by ICD revision from 1950 to 2008 used in this study based on publicly available datasets. Between 1950-1957, 40 countries used ICD-6 and sent data to WHO using the same Tab A format as ICD-7. ICD-6 has 235 country-years and 50.9 million deaths.