Table 1.

Registry Use in Physician Organizations

	All Physician Organizations (n=1040)	Medical Groups (n=693)	IPAs (n=347)
Presence of any registry—n (%)	493 (47.4)	326 (47.0)	167 (48.1)
Asthma registry—n (%)	304 (31.2)	176 (27.8)	128 (37.7)†
CHF registry—n (%)	339 (34.8)	207 (32.5)	132 (39.2)*
Depression registry—n (%)	143 (15.7)	90 (15.1)	53 (16.9)
Diabetes registry—n (%)	398 (40.3)	260 (40.3)	138 (40.4)
Number of registries—mean (SD) (range=0 to 4)	1.1 (1.4)	1.0 (1.4)	1.3 (1.5)*
Number of registries among organizations with at least 1 registry—mean (SD)	2.4 (1.1)	2.2 (1.2)	2.7 (1.0)‡

Note: Disease-specific registry percentages calculated from the total number of physician organizations treating disease. N=973 treat asthma; 975 treat CHF; 909 treat depression; 987 treat diabetes.

^*P<.05.

^†P<.01.

^‡P<.001.

CHF, congestive heart failure.