Household size and composition often vary by religious affiliation, data from 130 countries and territories reveals. Muslims and Hindus have larger households than Christians and religious “nones,” influenced in part by regional norms.
Concentrated in Europe, Orthodox Christians have declined as share of the global Christian population, from 20% in 1910 to 12% today. But the Ethiopian community is highly observant and growing.
Between 1991 and 2008, the share of Russian adults identifying as Orthodox Christian rose from 31% to 72%, according to data from the International Social Survey Programme. During the same period, the share of Russia’s population that does not identify with any religion dropped from 61% to 18%.
George Mason University Professor Peter Mandaville, Dilwar Hussain of the Islamic Foundation, and Maha Azzam of the Middle East and North Africa Programme at Chatham House discussed key findings of a Pew Forum study containing profiles of some of the oldest, largest and most influential Muslim groups – from the Muslim Brotherhood to mystical Sufi orders and networks of religious scholars.
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