By: Albrecht, Chris, and Jay D. Teachman.
Analyzing data from the 1995 National Survey of Family Growth, these researchers find that an increase in the number of transitions in childhood living arrangements increases the risk of a first premarital pregnancy before the age of 25 by between 23% to 41% for white teenagers and 14% to 21% for black teenagers. Being born out of wedlock increases the risk by between 55% to 134% percent for white teenagers and 69% to 73% percent for black teenagers.
Childhood living arrangements and the risk of premarital intercourse. Journal of Family Issues 24 (7): 867-94.