TABLE 1.

Baseline characteristics of primary care physician (PCP) respondents (n = 181)

Characteristics	Overall PCPs (n = 181)
Gender
Female	59.1%
Race/Ethnicity
Non-Hispanic White	82.6%
Black/Other	17.3%
Hispanic	5.0%
PCP age (years)
30–39	17.9%
40–49	13.6%
50–59	33.9%
60–69	26.5%
≥70	8.0%
PCP role
Physician	96.9%
Nurse practitioner	3.0%
Years out of school
<5 years	11.8%
5 years–<10 years	8.1%
≥10 years–<20 years	14.9%
≥20 years–<30 years	36.7%
≥30 years	28.5%
Specialty
Internal medicine	60.9%
Family medicine	26.1%
Geriatrics	4.3%
Other	8.7%
Community versus Academic primary care practice
Community	74.7%
Beth Israel Deaconess community practices (20 practices)	30.2%
Lahey Health/Lahey community practice (15 practices)	30.8%
Mount Auburn Health (MAPS) (8 practices)	13.2%
Academic	25.3%
Beth Israel Deaconess internal medicine and geriatrics	25.2%
Panel size
<1000 patients	30.6%
≥1000 patients	69.4%
Proportion of patients ≥65 years old in panel
≤20%	20.7%
21%–30%	28.6%
31%–40%	22.7%
41%–74%	25.2%