Table 1.

Characteristics of intervention and control departments at the beginning of the intervention (quarter 1, 2015)

	Intervention departments	Control departments
Total adolescent population	16,041	8,617
Department characteristics
Number of primary care departments	9	34
Department type
Pediatric	6	1
Family practice/other	3	33
Median number of adolescents (IQR)	1,833 (1,057–2,348)	201.5 (104–338)
Median number of providers (IQR)	9 (4–12)	3 (2–4)
Provider specialty (%)
Pediatric, MD or DO	44	2
Family medicine, MD or DO	36	52
Internal medicine, MD or DO	1	11
Nurse practitioner	13	24
Physician assistant	6	11
Patient characteristics
Age
11–12 y	4,722 (29)	2,227 (26)
13–15y	7,151 (45)	3,718 (43)
16–17y	4,168 (26)	2,672 (31)
Sex
Female	7,879 (49)	4,253 (49)
Male	8,162 (51)	4,364 (51)
Percent of preventive care visits during study period (%)	27	19
Tdap vaccine coverage, % (95% CI)	96.0 (95.7–96.3)	95.5 (95.1–95.9)
Meningococcal conjugate vaccine coverage	88.9 (88.4–89.5)	86.0 (85.3–86.7)

CI = confidence interval; DO = doctor of osteopathic medicine; IQR = interquartile range; MD = doctor of medicine; Tdap = tetanus/diphtheria/pertussis.