Browse 114 concepts used in the study of religion, review how survey researchers measured them in the past, and quickly compare the results of more than 7,600 survey questions.
The archive is a collection of surveys, polls, and other data submitted by the foremost scholars and research centers in the world. Review and analyze data online, or download free of charge.
Examine the religious composition, religious freedoms, demographics, constitutional clauses, survey findings and multiple social and political measures for 250 nations.
View maps of the United States and individual states for hundreds of variables, including congregational membership, census data, crime statistics and many others.
Generate congregational membership reports for any county, state and urban area in the United States using data collected by the Religious Congregations & Membership Study.
The profiles chart schisms and mergers, document membership trends, offer basic descriptions, and link to additional resources for more than 400 past and present American religious groups.
Browse dozens of topics from a major national survey of religious congregations. See how the responses vary by the size, religious family and region of the congregation.
Browse dozens of topics covered by major national surveys. See how the responses vary by demographic categories and, when available, how they change over time.
View maps of the United States and individual states for hundreds of variables, including congregational membership, census data, crime statistics and many others.
This survey examines religious affiliation, belief, and practice, demographic factors, and views on social issues (divorce, euthanasia, abortion, homosexuality, etc.) in Brazil.
5700 people were interviewed in 236 municipalities in the following states: São Paulo, Rio De Janeiro, Espirito Santo, Minas Gerais, Rio Grande Do Sul, Santa Catarina, Paraná, Bahia, Alagoas, Sergipe, Ceará, Federal District, Pernambuco, Paraíba, Rio Grande of the North, Piauí, Maranhão, Goiás, Tocantins, Pará, Acre, Mato Grosso, Mato Grosso do Sul, Amazonas, and Rondônia.
Sampling Procedures
The research of Datafohla uses a stratified random sample with quotas based on sex and age and random sampling of individuals. The population is Brazilians 16 years old and older. This universe is divided into four sub-universes: the Southern, Southeastern, Northeastern and North/Center-Western regions of Brazil. In each sub-universe, municipalities were selected randomly with probability proportional to size. As a result, this survey is representative for Brazil, for the four regions and for municipalities within certain statistical limits. The margin of error for this sampling procedure is plus or minus 2 percentage points at the 95 percent confidence level. This means that if 100 surveys were conducted with the same methodology, 95 of the results would be inside of the margin of error.