Table 2.
Percentage change in visits/person/year, post (2010–2014) vs pre (2007–2009). Comparison between intervention and control groups
| Intervention group | Control group | Difference in differences P value | |||||
|---|---|---|---|---|---|---|---|
| Pre avg. visit rate (2007–2009) | Post avg. visit rate (2010–2014) | % change post vs pre | Pre avg. visit rate (2007–2009) | Post avg. visit rate (2010–2014) | % change post vs pre | ||
| Primary care | 1.90 | 2.72 | +43% | 1.90 | 1.97 | +4% | <0.001 |
| Urgent care | 0.47 | 0.27 | −43% | 0.44 | 0.41 | −5% | <0.001 |
| Emergency dept. | 0.17 | 0.17 | −4% | 0.17 | 0.19 | +8% | 0.245 |
| Inpatient | 0.08 | 0.06 | −24% | 0.08 | 0.07 | −19% | 0.781 |
| Specialty | 1.36 | 1.60 | +18% | 1.40 | 1.66 | +19% | 0.986 |
| Other outpatient | 1.32 | 1.44 | +8% | 1.58 | 1.68 | +6% | 0.309 |
| Total | 5.30 | 6.27 | +18% | 5.57 | 5.97 | +6% | 0.008 |
| Avg. N | 1094 | 853 | 364 485 | 249 417 | |||
Source: See online Appendix Exhibit 2A and 2B for detailed trend results and P values for % change of post vs pre intervention results. For those interested in the regression coefficients, see online Appendix Exhibit 4.