Table 1.

Baseline demographic and practice characteristics, by site, by intervention group and overall

Site	N	11–13 years old, %	Female, %	Non-white, %	Commercial Health Insurance, %
Intervention sites
A	1263	42.9	49.4	4.8	82.6
C	390	36.9	51.5	67.7	21.5
D	1815	36.0	51.0	2.4	74.3
E	133	30.1	60.2	51.9	11.3
F	987	47.7	52.1	3.5	71.1
G	136	31.6	47.8	11.0	55.9
H	99	36.4	51.5	37.4	49.5
I	66	34.9	56.1	18.2	31.8
J	53	34.0	49.1	98.1	18.8
Intervention total	4942	39.9	49.6	12.0	62.2
Control sites
L	1597	35.2	49.2	1.6	69.6
M	704	39.5	48.4	1.3	77.7
N	933	44.0	50.3	82.4	23.4
O	143	35.7	52.5	46.1	16.1
P	86	24.4	61.6	2.3	38.4
Q	160	18.1	50.6	5.0	60.6
R	117	28.2	51.3	5.1	67.5
S	103	32.0	44.7	3.9	64.1
T	913	36.6	48.2	23.4	71.9
U	921	39.5	49.5	9.0	84.0
V	242	36.0	53.3	83.5	32.6
Control total	5919	37.2*	51.1	23.4*	67.8*
Overall	10861	38.4	50.3	18.2	64.7

^*P <0.001 for differences between intervention and control groups