By Pew Research Center's Religion & Public Life Project Pew Research Center conducted surveys among 24,599 adults across 15 countries in Western Europe. Interviewing was carried out under the direction of GfK through telephones (both cellphones and landlines) from April to August 2017. The questionnaire administered by survey interviewers was designed by Pew Research Center staff in consultation with subject matter experts and advisers […] …read more

Source:: Pew Research Center