Is there any data to show that child seats are actually less effective, or just as effective as seatbelts for serious injury? Because that would prove your case.) Steven Levitt: Yeah, that's a great question. In my data, and in another data set I've looked at for New Jersey crashes, I find very small differences in injury.
有没有任何数据是表明儿童汽车安全座椅在防止受伤这方面 比安全带效果差，或者至少不比安全带好的？ 因为这会加强你的论据。） 是的，这是个好问题。在我的数据里，另一组数据里， 我调查了新泽西州的车祸案例。 两种防范措施在减少受伤这方面差异很小。