Demographic Characteristics of Survey Respondents and Nonrespondents*
| Attribute | Respondents [No. (%)] | Nonrespondents [No. (%)] |
|---|---|---|
| Specialty† | ||
| Family practice | 113 (54) | 100 (68) |
| Pediatrics | 97 (46) | 48 (32) |
| Year of medical school graduation | ||
| 1940 to 1959 | 8 (5) | 4 (4) |
| 1960 to 1979 | 71 (46) | 44 (39) |
| After 1980 | 76 (49) | 64 (57) |
| Gender | ||
| Male | 123 (64) | 102 (72) |
| Female | 69 (36) | 39 (28) |
* Nonrespondent data based on administrative data; respondent based on administrative data plus survey response (99% correspondence).
† P < .05 for differences between respondents and non-respondents.