Table 1.

Provider and Practice Characteristics of Survey Respondents (N = 400)

	6–12 months N =90	1–2 years N =129	2+ years N =181	Overall N =400	p value*
Practice characteristics†
Number of patient encounters per year, mean (SD)	8,570.2 (10,692.5)	9,750.6 (12,840.1)	13,111.3 (15,871.3)	10,962.7 (13,951.8)	0.02
Number of providers at practice, mean (SD)	3.9 (7.3)	4.2 (5.4)	5.8 (8.2)	4.8 (7.3)	0.06
Provider characteristics
Provider type (%)
MD, DO	93.3	86.1	91.2	90.0	0.16
NP, PA, Other	6.67	14.0	8.8	10.0
Specialty
Family/internal medicine	51.1	69.0	70.2	65.5	0.02
Pediatrics	31.1	20.2	22.1	23.5
Other	17.8	10.9	7.7	11.0
Year of graduation from medical school (%)					0.58
1979 or earlier	13.3	22.5	19.3	19.0
1980–1989	40.0	34.9	28.7	33.3
1990–1999	22.2	20.9	24.3	22.8
2000–2009	11.1	10.1	14.4	12.3
Missing‡	13.3	11.6	13.3	12.8
Full or part-owner of practice (%)	68.9	65.1	66.9	66.8	0.86
Missing (N =42)	12.2	10.1	9.9	10.5
Work load in hours per week (%)					0.33
Up to 15	7.8	7.0	3.3	5.5
More than 15, up to 30	22.2	14.7	19.3	18.5
More than 30, up to 50	31.1	42.6	33.2	35.8
More than 50	24.4	24.8	30.4	27.3
Missing (N =52)	14.4	10.9	13.8	13.0
English is not a first language (%)	21.3	37.8	40.9	31.8	0.44
Missing (N =45)	14.4	9.3	11.1	11.3

*Comparisons were based on ANOVA for continuous items and chi-square for categorical variables. Bold indicates significance at p < 0.05

†Patient encounters per year, number of providers, provider type, and specialty are from administrative data. Providers’ length of time live on the EHR, number of years in practice, workload, and data on providers for whom English is not a first language are from the survey

‡Providers who graduated medical school in 2010 or later were not captured in the data