TABLE 1

Respondent and Nonrespondent Characteristics

CharacteristicPediatriciansFPs
Respondents (n = 374)Nonrespondents (n = 101)Respondents (n = 286)Nonrespondents (n = 155)
Age in y, mean (SD)50 (11)51 (11)55 (8)56 (9)
Male sex, %363952**63**
Region, %
 Midwest22*20*3025
 Northeast23*11*1412
 South34*47*3442
 West21*23*2221
Location of practice, %
 Urban54523836
 Suburban45475256
 Rural1198
Setting, %
 Private practice807765**76**
 Hospital or clinic171825**15**
 HMO3610**8*
Proportion of patients aged 16–23 y, %
 <1015N/A57N/A
 10–1939N/A31N/A
 ≥2046N/A12N/A
Proportion of black or African American patients, %
 0–2478N/A83N/A
 25–4918N/A13N/A
 ≥504N/A4N/A
Proportion of non-Hispanic white patients, %
 0–2419N/A14N/A
 25–4929N/A19N/A
 ≥5052N/A67N/A
Proportion of patients with Medicaid or CHIP, %
 0–2443N/A66N/A
 25–4927N/A21N/A
 ≥5030N/A13N/A
Proportion of patients with private insurance, %
 0–2421N/A19N/A
 25–4918N/A25N/A
 ≥5061N/A56N/A
  • CHIP, Children’s Health Insurance Program; N/A, not applicable.

  • * P < .05 for overall comparison of respondents and nonrespondents within pediatricians.

  • ** P < .05 for overall comparison of respondents and nonrespondents within FPs.