TABLE B-5 Coefficients of GAF and GPCI, Without Controls and With Controls for HPSA or RUCC

GAF Coefficients GPCI Coefficients
Measure PFC (only casemix controls) PFH (also controlled for HPSA) PFR (also controlled for RUCC) PIC (only casemix controls) P1H (also controlled for HPSA) PIR (also controlled for RUCC)
Have personal doctor -4.32 -6.49* -8.80* 2.99* -3.580 -29.30#
Timely routine care 1.18 -0.90 -7.62 9.56 5.19 -1 8.91#
Timely care in illness -4.82 -5.98 0.86 -11.34# -12.67# -1.33#
Wait <l 5 minutes -32.98 -37.49 -27.02 -39.75# -52.32# -45.04#
Easy specialist appointment -3.11 -4.00 -8.87 -9.89# -12.45# -36.05#
Rating of care overall -7.45 -8.40* -7.69 -18.25# -20.83# -21.64#
Rating of doctor -0.89 -1.57 -7.27 -7.1 7# -8.59# -32.13#
Doctor communication -4.86 -5.85 -2.58 -11.77# -12.59# -3.14#
Get needed care -16.80# -15.87+ -13.67- -33.60# -31.748 -35.72#
Influenza immunization -8.36 -11.98 -18.43+ 9.04 -0.23# -32.44#
Pneumovax immunization -20.58* -23.82+ -27.65# -18.16# -25.76# -58.53#
Breast cancer screening -1.26 -4.07 -4.90 12.33 4.89- -9.84#
Cholesterol screening (cardiac) 18.230 17.23# 14.01+ 42.36 40.83 37.16
Cholesterol screening (diabetic) 13.33+ 12.87+ 5.84 45.09 44.84 17.13
Hemoglobin Ale test (diabetic) -3.18 -3.68 -7.08* 9.51 7.83 -6.78#
Retinal exam (diabetic) 2.94 2.19 2.38 -0.72# -2.97# -17.67#
Mean of all items -4.56 -6.11 -7.41 -1.24 -5.01 -18.39

NOTES: On scale of percentage points. Significance indications: * = p <.05; + = p <.01; # = p <.001. GAF = geographic adjustment factor; GPCI = geographic practice cost index; HPSA = Health Professional Shortage Area; RUCC = Rural- Urban Continuum Code.

TABLE B-6 Coefficients of Difference Between Current (CMS) and Proposed (IOM) Factors (as IOM-CMS), With and Without Control for RUCC

Coefficient of Change in GAF Coefficient of Change in GPCI
Measure PFD (only casemix controls) PFDR (also controlled for RUCC) PID (only casemix controls) PIDR (also controlled for RUCC)
Have personal doctor 24.85# 18.26* -19.70 20.53
Timely routine care 13.76 8.32 -12.16 19.47
Timely care in illness -6.05 -6.87 24.99 36.93
Wait <l5 minutes -0.16 0.70 -8.45 -21.49
Easy specialist appointment 6.23 2.21 23.81 56.14
Rating of care overall -4.00 -0.15 17.50 7.25
Rating of doctor -8.48 -16.02 16.20 40.62
Doctor communication -15.25 -10.67 29.52 15.33
Get needed care 9.40 18.96 6.98 -1.46
Influenza immunization 20.31# 5.77 -63.76+ -23.80
Pneumovax immunization 18.76* 7.86 -60.82+ -31.52
Breast cancer screening 12.34 5.62 -20.19 4.80
Cholesterol screening (cardiac) 22.64# 17.03+ -40.83# -19.21
Cholesterol screening (diabetic) 25.51# 10.66* -51.59# -10.19
Hemoglobin Ale test (diabetic) 1 3.69+ 14.07+ -18.96' -6.55
Retinal exam (diabetic) 4.61 0.98 2.99 24.47
Mean of all items 8.64 4.80 -10.90 6.96

NOTE: On scale of percentage points. Significance indications: * = p <.05; + = p <.01; # = p <.001. CMS = Centers for Medicare & Medicaid Services; GAF = geographic adjustment factor; GPCI = geographic practice cost index; IOM = Institute of Medicine; RUCC = Rural—Urban Continuum Code.



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