The initial sampling frame for the Center Moriches study included 326 working telephone numbers. Of these 326 numbers, 212 were contacted and agreed to participate in the first wave of the study, for a response rate of 65 percent. Of these 212 initial respondents, 112 were successfully recontacted and agreed to participate in the second wave, for a retention rate of 52.8 percent.

For the Monroe study, 167 respondents (from a sampling frame of 300 working numbers) were contacted and agreed to participate in the first wave, for a response rate of 55.67 percent. Of these 167 respondents, 122 were successfully recontacted and agreed to participate in the second wave, for a retention rate of 73.1 percent.

In the Oklahoma study, 206 people participated in the first wave. The initial sampling frame consisted of 395, for a response rate of 52.15 percent. The second wave successfully recontacted 116 of the 206 initial respondents, for a retention rate of 56.3 percent.

In the Oregon study, the initial sampling frame included 413 phone numbers. Of these, 243 people were contacted, for a response rate of 58.8 percent. For the second wave, 145 were contacted and agreed to participate, for a retention rate of 59.7 percent.

Overall, 836 individuals participated in the first wave; and, of these, 495 respondents were contacted following the Court's decision and agreed to be interviewed again.