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Methodology and sources of Christian and religious affiliation
(24,153 words)

The following essay is adapted from the World Christian Encyclopedia, first edition, 1982 (pp. 45–56), which was later updated for World Christian Trends, 2001 (pp. 468–76). In 2013, a more comprehensive treatment was presented in The World’s Religions in Figures: An Introduction to International Religious Demography. This short text, adapted primarily from these three sources, is intended to give the reader of this Encyclopedia some ideas …

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“Methodology and sources of Christian and religious affiliation”, in: World Christian Encyclopedia Online, Todd M. Johnson, Gina A. Zurlo. Consulted online on 03 October 2023 <>
First published online: 2020

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