There are many technical terms and statistics used throughout this volume. These brief notes explain how these are used, and, in some cases, the source.
The ‘World as 100 Christians’ graphic draws on a number of sources to depict the proportion of various of subjects if the world consisted of 100 Christians. The outer ring of continent, gender, density, age, tradition and language comes mainly from data found in the World Christian Database (WCD). The inner ring of 12 global issues comes from the intersection of United Nations and the Worl…