"The results indicate that travel between states to obtain abortions was important. Births in repeal states fell by almost 11% relative to births in nonrepeal states more tan 750 miles away but only by 4.5% relative to births in nonrepeal states more than 750 miles away but only by 4.5% relative to births in states less than 50 miles away and those in state between 250 and 750 miles away. Although not reported here, similar evidence was obtained indicating that travel was roughly equally common across all age groups, including teens. Assuming that no travel took place from distant states, these estimates for all births indicate that abortion legalization in New York, California, and a few other state sin 1970 reduced the fertility rate in these states by almost 11%. The Roe v Wade decision had a similar effect on births in this group of distant states in t eh years following 1973. These estimates can also e used to examine the extent to which birth rates fell between 1971 and 1973 in nonrepeal states as the result of travel or repeal states to obtain an abortion. To do so, we again assumed that women in states more than 750 miles away from repeal states did not travel to obtain abortions. Then the difference between the estimated reduction in birth rates in repeal states relative to that in states less than 250 miles away and states more than 750 miles away (6.32%) represents the extent to which births fell in the closest nonrepeal states owing to travel. A similar exercise for nonrepeal states between 250 and 720 away indicated that birth rates fell in those states by 6.25%. Taking a weighted average of all women by their distance from a repeal state, these estimates imply that travel to obtain an abortion led to a 4.5% decline in births to women in all nonrepeal states following legalization of abortion in repeal states."