Table 1

Characteristics of practices associated with study participation among 160 targeted medical practices
Practice characteristic
 No. of practices targeted
 % of targeted practices enrolled
 P-value
 % of targeted practices enrolled & eligible
 P-value
Practice volume
     <500 patients*
 48
 37.5
27.1
     500–<1000 patients
 60
 48.3
 0.19†
 45.0
 0.03†
     ≥1000 patients
 52
 55.8
51.9
Specialty
     Family medicine
 55
 43.6
 0.51‡
 34.5
 0.18‡
     Pediatrician
 105
 49.5
45.7

All targeted practices
 160
 47.5
41.9

* No. of Medicaid enrolled patients aged 0–3 yrs seen in 1999

† P-values are from Chi-square test (2 df)

‡ P-value is from Chi-square test (1 df)

Slade et al. BMC Health Services Research 2007 7:176   doi:10.1186/1472-6963-7-176