Table 3 Results of univariate logistic regression analysis testing for a change in each indicated variable over time
From: Carotid endarterectomy and carotid artery stenting utilization trends over time
Year | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 1998-2008 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | 24,421 | 24,252 | 24,646 | 24,716 | 23,047 | 23,011 | 21,413 | 21,224 | 22,555 | 21,040 | 23,326 | Slope/OR | CI | P-Value |
Age, y (SE) | 70.97 (0.06) | 70.95 (0.06) | 71.11 (0.06) | 71.25 (0.06) | 71.25 (0.06) | 71.04 (0.06) | 70.9 (0.07) | 71.03 (0.07) | 71.12 (0.06) | 71.16 (0.07) | 71.06 (0.06) | 0.005 | -0.007-0.0016 | 0.41 |
% Male | 57.26 | 57.64 | 57.29 | 57.3 | 56.92 | 56.8 | 57.05 | 57.42 | 57.39 | 57.32 | 57.72 | 1.001 | 0.998-1.003 | 0.63 |
% Medicare | 71.72 | 71.73 | 73.1 | 73.19 | 74.68 | 74.95 | 73.07 | 73.7 | 73.92 | 73.43 | 70.98 | 1.002 | 1.000-1.005 | 0.08 |
% White | 92.87 | 91.92 | 91.47 | 89.96 | 89.82 | 88.56 | 89.32 | 89.98 | 89.48 | 87.52 | 87.28 | 0.949 | 0.945-0.953 | < 0.0001 |