Table 2

Characteristics of participating paediatric practices

State	Staff size	# of monthly well-child visits (0–3 years old)	Medicaid population
Alaska	37	310	5%; 40% CHIP
Alabama*	81	133	38%
California	1017†	569	77%
Indiana‡	27	219	5%; 42% CHIP
Louisiana*	6	71	95%
Maryland	6	360	25%
Massachusetts	182	533	73%
New York	16	235	47%; 18% CHIP
New York	65	440	90%; 4% CHIP
New York	5	190	63%; 2% CHIP
New York*	~300	565	70%; 1% CHIP
New York	19	600	95%; 4% CHIP
New York*	307	297	80%
New York	17	400	95%; 4% CHIP
North Carolina	40	343	65%; 8% CHIP
Oregon	96	551	60%
Virginia	40	307	78%
Utah	28	345	13%

*Community health centre or federally qualified health centre.
†This # of staff represents their entire corporation, they initiated testing with one clinic.
‡Rural health designation.
CHIP, Children's Health Insurance Program.