Table 1.
Characteristics of Survey Respondents and Nonrespondents
| Characteristic | Responders, n = 829 (%) | Nonresponders, n = 750 (%) | P Value* |
|---|---|---|---|
| Medical specialty | .27 | ||
| Generalist | 400 (48) | 388 (52) | |
| Internal medicine | 194 (23) | 200 (27) | |
| Family practice | 206 (25) | 188 (25) | |
| Infectious diseases | 429 (52) | 362 (48) | |
| Male gender | 605 (73) | 539 (72) | .62 |
| Age, y | |||
| ≤40 | 245 (30) | 200 (27) | .42 |
| 41–59 | 481 (58) | 457 (61) | |
| ≥60 | 102 (11) | 93 (12) | |
| U.S. region | .36 | ||
| East | 217 (27) | 186 (25) | |
| Midwest | 188 (23) | 150 (20) | |
| South | 250 (31) | 238 (32) | |
| West | 156 (19) | 149 (20) | |
| Practice setting | |||
| Office-based | 729 (88) | 685 (91) | .03 |
| Hospital staff | 100 (12) | 65 (9) | |
| Type of practice | .002 | ||
| Solo | 154 (19) | 173 (22) | |
| Group | 243 (29) | 187 (23) | |
| Staff model | 106 (13) | 70 (10) | |
| Not classified | 276 (33) | 302 (40) |
*
X2 test statistic for difference in distribution between responders and nonresponders.