Table 6.
Unadjusted and adjusted odds ratios comparing enhanced to traditional fee-for-service produced from the cervical cancer screening model
| Year | Unadjusted | Adjusted for Patient Characteristics | Adjusted for Patient and Physician Characteristics | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Odds Ratio | 95% CI | p-value | Odds Ratio | 95% CI | p-value | Odds Ratio | 95% CI | p-value | ||
| Income Q1 (lowest) | ||||||||||
| Enhanced vs. traditional fee-for-service | 2005 | 0.97 | (0.96–0.99) | 0.000 | 0.96 | (0.95–0.98) | <.0001 | 0.98 | (0.97–1.00) | 0.0231 |
| 2006 | 0.99 | (0.98–1.00) | 0.080 | 0.98 | (0.96–0.99) | 0.0008 | 1.00 | (0.99–1.02) | 0.7417 | |
| 2007 | 1.03 | (1.01–1.05) | 0.004 | 1.02 | (1.00–1.04) | 0.0271 | 1.06 | (1.04–1.08) | <.0001 | |
| 2008 | 0.98 | (0.96–1.01) | 0.145 | 0.99 | (0.97–1.0) | 0.649 | 1.04 | (1.02–1.07) | 0.001 | |
| 2009 | 1.10 | (1.07–1.14) | <.0001 | 1.14 | (1.10–1.17) | <.0001 | 1.16 | (1.13–1.20) | <.0001 | |
| 2010 | 1.04 | (1.00–1.08) | 0.028 | 1.10 | (1.06–1.14) | <.0001 | 1.16 | (1.11–1.20) | <.0001 | |
| 2011 | 1.04 | (1.00–1.09) | 0.082 | 1.09 | (1.04–1.15) | 0.0004 | 1.19 | (1.31–1.25) | <.0001 | |
| 2012 | 1.08 | (1.02–1.14) | 0.006 | 1.21 | (1.14–1.28) | <.0001 | 1.20 | (1.13–1.27) | <.0001 | |
| Income Q5 (highest) | ||||||||||
| Enhanced vs. traditional fee-for-service | 2005 | 1.06 | (1.04–1.07) | <.0001 | 1.07 | (1.05–1.09) | <.0001 | 1.06 | (1.05–1.08) | <.0001 |
| 2006 | 1.04 | (1.03–1.06) | <.0001 | 1.06 | (1.05–1.08) | <.0001 | 1.09 | (1.08–1.11) | <.0001 | |
| 2007 | 1.15 | (1.13–1.18) | <.0001 | 1.18 | (1.15–1.21) | <.0001 | 1.20 | (1.17–1.23) | <.0001 | |
| 2008 | 1.15 | (1.12–1.19) | <.0001 | 1.20 | (1.17–1.24) | <.0001 | 1.26 | (1.22–1.30) | <.0001 | |
| 2009 | 1.18 | (1.14–1.22) | <.0001 | 1.24 | (1.20–1.29) | <.0001 | 1.24 | (1.20–1.29) | <.0001 | |
| 2010 | 1.26 | (1.20–1.32) | <.0001 | 1.35 | (1.29–1.42) | <.0001 | 1.38 | (1.31–1.44) | <.0001 | |
| 2011 | 1.21 | (1.15–1.29) | <.0001 | 1.33 | (1.25–1.41) | <.0001 | 1.37 | (1.29–1.45) | <.0001 | |
| 2012 | 1.17 | (1.10–1.25) | <.0001 | 1.33 | (1.24–1.42) | <.0001 | 1.31 | (1.23–1.41) | <.0001 | |
| Ratios of Odds Ratios | ||||||||||
| Difference in enhanced vs. traditional fee-for-service between Q1 vs. Q5 | 2005 | 0.92 | (0.90–0.94) | <.0001 | 0.90 | (0.88–0.92) | <.0001 | 0.92 | (0.90–0.95) | <.0001 |
| 2006 | 0.95 | (0.93–0.97) | <.0001 | 0.92 | (0.90–0.94) | <.0001 | 0.92 | (0.90–0.94) | <.0001 | |
| 2007 | 0.89 | (0.87–0.92) | <.0001 | 0.87 | (0.84–0.89) | <.0001 | 0.88 | (0.86–0.909) | <.0001 | |
| 2008 | 0.85 | (0.82–0.89) | <.0001 | 0.83 | (0.79–0.86) | <.0001 | 0.83 | (0.80–0.86) | <.0001 | |
| 2009 | 0.94 | (0.90–0.98) | 0.007 | 0.92 | (0.87–0.96) | 0.000 | 0.94 | (0.89–0.98) | 0.0059 | |
| 2010 | 0.83 | (0.78–0.88) | <.0001 | 0.81 | (0.76–0.86) | <.0001 | 0.84 | (0.79–0.89) | <.0001 | |
| 2011 | 0.86 | (0.80–0.92) | <.0001 | 0.82 | (0.76–0.89) | <.0001 | 0.87 | (0.81–0.94) | 0.0003 | |
| 2012 | 0.92 | (0.85–1.01) | 0.064 | 0.91 | (0.84–0.99) | 0.032 | 0.91 | (0.83–0.99) | 0.0353 | |
Results for Q2-Q4 not shown. Ratios of odds ratios are also presented, with Q5 and traditional fee-for-service serving as referent groups