| Variable |
Non-Respondents
(N=2,024) |
Phone
(N=125) |
t |
P |
Phone+
E-mail
(N=236) |
t |
P |
Phone+
E-mail+Mail
(N=330) |
t |
p |
| Female |
56.5% |
63.2% |
-1.44 |
.149 |
58.9% |
-0.67 |
.498 |
56.1% |
0.16 |
.874 |
| Ethnicity |
| Asian Am. |
41.1% |
20.8% |
4.49 |
.000 |
25.0% |
4.74 |
.000 |
23.9% |
5.85 |
.000 |
| Latino |
21.7% |
25.6% |
-1.00 |
.317 |
22.0% |
-0.10 |
.917 |
20.6% |
0.44 |
.654 |
| White |
23.2% |
39.2% |
-3.98 |
.000 |
38.1% |
-4.88 |
.000 |
40.3% |
-6.38 |
.000 |