I have recently undertaken a study of Christian deconversion–why do people leave Christianity. In reading about the topic, I came across an interesting study. A group of Dutch researchers studied religious (and other) transitions among 1,000 people. 653 of these respondents were raised in a religious home, and of them 186 left their church. Among those who left, when did they do so?
Percentage that leave the church by age group (n=186)
Age, % leaving church
As a summary, 28% of their sample left the Christian church, and, those who left were most likely to do so in the high school and early college years. I suppose this provides justification to churches that emphasize high school and college programs.
(Citation: Need, Ariana, and Nan Dirk De Graaf. 1996. European Sociological Review
12(1)87-99. Table 3.)
Technical note: I probably would have analyzed the data differently–equal age ranges + looking at hazard of leaving over time, not raw percentages. This approach may over emphasize leaving in youth… but still I think that it’s story is basically right.