More Americans are active in religious groups than previously thought, and many others without ties to congregations still believe in God or a higher power, according to a broad survey of faith in America released Monday.
The study also found that most traditional Christians reject the label "evangelical," preferring to describe themselves as "Bible-believing" or "born again."
The survey was conducted by the Baylor University sociology department and the Baylor Institute for Studies of Religion as the first in a series on the spiritual life of Americans.
Researchers found that only 10.8 percent of Americans have no ties to a congregation, denomination or faith group. Previous surveys had put that figure at 14 percent, overlooking about 10 million people involved in some form of organized religion, the Baylor report said.
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Other surveys also have overlooked millions of evangelicals, because respondents who belonged to nondenominational groups or megachurches would often report that they had no denomination and were wrongly counted as unaffiliated, the study's authors say.
Baylor researchers found that one-third of Americans are evangelical Protestant, just under one-quarter are mainline Protestant, one-fifth are Roman Catholic and 5 percent are black Protestant. Jews make up 2.5 percent of the population, while 5 percent of Americans belong to other faiths.
The rest, who are not involved in religious groups, are not fully secular, researchers said. More than 60 percent of the unaffiliated say they believe in God or a higher power, and nearly one-third say they pray at least occasionally. Eleven percent believe Jesus is the son of God.
Among the more religiously observant Christians, the term "evangelical" is unpopular, according to the study. Nearly 70 percent of evangelical and black Protestants say "Bible-believing" better describes their views. Nearly as many liked the term "born again."
Only 15 percent of all respondents called themselves "evangelical," and within that group, just 2 percent said it was the best description.
The study also looked at the market for religious goods, including books and movies.
One-fifth of respondents have read either "The Purpose Driven Life" by pastor Rick Warren or the "Left Behind" series of apocalyptic novels, the survey found. Even more — 28.5 percent — had read "The Da Vinci Code," a best-selling mystery novel.
Asked whether God favored the United States, only one-fifth of respondents agreed. Evangelical Protestants were the most likely to agree, at 26 percent.
Researchers also examined Americans' conception of God and found the greatest share — about 31 percent — think of God as "authoritarian," deeply involved in people's lives and world events, angry and capable of punishing those who are unfaithful.
The survey of 1,721 respondents has a margin of error of plus or minus 4 percentage points and was conducted by the Gallup Organization between Oct. 8 and Dec. 12, 2005.
