By Pew Research Center's Religion & Public Life Project Pew Research Center conducted surveys among 24,599 adults (ages 18 and older) across 15 countries in Western Europe. Interviewing was carried out under the direction of GfK Belgium by telephone (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 […] …read more

Source:: Pew Research Center