Table 1.

Demographic and Practice Characteristics of Survey Respondents and Non-Respondents, United States, 2019-2020 (n = 968)

CharacteristicRespondents (n = 617)Non-Respondents (n = 351)P-Value
Mean (SD) physician age, years54.8 (9.4)56.7 (9.1).002*†
Female, %5038< .001*
Specialty, %
 Family physician5439< .001*
 General internist4661
Region of the United States, %
 Midwest2426.08
 Northeast1921
 South3336
 West2417
Location of practice, %
 Urban2723.19
 Suburban6768
 Rural69
Practice setting, %‡
 Private practice6678< .001*
 Hospital or clinic2517
 Health maintenance organization95
Median (IQR) number of providers in practice6 (3 to 12)5 (2 to 10).002*§
Decisions are made about purchasing and handling vaccines, %
 Independently5357.28
 At a larger system level4743

  • IQR, interquartile range; SD, standard deviation.

  • ↵* Bold values indicate statistical significance P < .05 between respondents and non-respondents.

  • † t-test used.

  • ↵‡ Numbers may not add to 100% due to rounding.

  • § Wilcoxon test used.