TABLE 1

Characteristics of Eligible Respondents in 2006 and 2013

Physician Characteristics20062013Pa
All respondents, n852854
Completed surveys, n852818
Excluded respondents, n223191
Eligible respondents,b n (%)629 (73.8)627 (76.7).62
Age, y, mean (SD)44.5 (11.4)46.5 (11.9).003
Female gender, n (%)359 (57.3)387 (62.2).08
US region, n (%).49
 Northeast138 (21.9)147 (23.4)
 Midwest136 (21.6)153 (24.4)
 South220 (35.0)202 (32.2)
 West135 (21.5)125 (19.9)
Practice area, n (%).94
 Urban, inner city147 (24.0)140 (23.0)
 Urban, non–inner city141 (23.0)136 (22.3)
 Suburban249 (40.7)255 (41.9)
 Rural75 (12.3)78 (12.8)
Practice setting, n (%).02
 Solo or 2-physician112 (18.8)80 (13.2)
 Group or staff health maintenance organization305 (51.3)316 (52.1)
 Hospital or clinic practicec178 (29.9)210 (34.7)
Patient visits per week, %, mean (SD)88.7 (62.1)77.4 (69.8).003
Patients with public health insurance, %, mean (SD)38.0 (32.2)41.8 (30.0).006
Practice ownership (full or part), n (%)
 Yesn/a194 (31.3)
 Non/a425 (68.7)
  • n/a, not applicable.

  • a P values compare 2006 and 2013 for each variable; P < .05 is considered significant.

  • b Eligible respondents: pediatricians who provide patient care and offer age-appropriate immunizations.

  • c These included medical school–affiliated clinics, hospital clinics, and community health center clinics.