18
Table 3. Multivariate Analysis Results, by Older Driver Policy Type
Medical Approach Renewal Requirements Approach
A. Main Effects Med Policy
Age-Targeted
Scale Renewal Cycle Requirements
Doctors/100,000 Pop. -.002 -.003 -.001
% 65 or Older .052* -.048 -.246**
Older Driver Fatal Crash Rate .001 .110** .137**
Fiscal Health .005 .027* -.024
Political Competition (Ranney) .014* .010 .015
% Urban .017** .027** .004
Administrative Capacity .006 -.009 .017
Adjusted/Cox and Snell R
2
.14 .10 .06
N
216
248
247
Medical Approach Renewal Requirements Approach
B. Interaction Effects Med Policy
Age-Targeted
Scale Renewal Cycle Requirements
Doctors/100,000 Pop. -.001 -.022 .062*
% 65 or Older -.635** -.412 -.512
Older Driver Fatal Crash Rate -.003 .104** .148**
Fiscal Health .006 .027* -.022
Political Competition (Ranney) -.079* -.083 .125
% Urban .017** .027** .004
Administrative Capacity .005 -.008 .011
% 65 or Older x Ranney .008** .004 .003
Doctors/100,000 x Ranney .000 .000 -.001*
Adjusted R
2
.17 .10 .09
N
216
248
247
Figures shown are unstandardized (linear) regression coefficients (for Medical Strategy
and Renewal Cycle) and logistic regression coefficients (for Age-Targeted
Requirements).
* p .05 ** p .01