Table 3.
Physician characteristics, by intervention group
| Intervention group with number of physicians | ||||||||
|---|---|---|---|---|---|---|---|---|
| Informed only | Insert | Outsert | Outsert + Patient Reminder | Insert + Outsert | Insert + Outsert + Patient reminder | All | P-value‡ | |
| N = 1282 | N = 1273 | N = 623 | N = 629 | N = 620 | N = 621 | N = 5048 | ||
| Number of patient visits | 55,961 | 53,748 | 26,379 | 27,392 | 26,061 | 26,912 | 216,453 | |
| Gender (% male) | 77.2 | 77.5 | 74.8 | 77.0 | 77.6 | 74.4 | 76.6 | 0.55 |
| Place of training (%) | 0.77 | |||||||
| Canada | 76.4 | 76.8 | 76.6 | 77.0 | 78.1 | 77.9 | 77.0 | |
| Solo practice (%) | 68.4 | 68.7 | 68.1 | 70.3 | 73.4 | 69.9 | 69.5 | 0.27 |
| Rural* (%) | 11.9 | 12.3 | 12.5 | 12.1 | 11.8 | 12.9 | 12.2 | 0.99 |
| Years since graduation: mean (std) | 26.9 (10.5) | 26.5 (10.2) | 26.0 (10.5) | 26.3 (10.3) | 26.8 (10.1) | 26.4 (9.9) | 26.5 (10.3) | 0.62 |
‡P-value testing the null hypothesis that there was no difference among the intervention groups. The proportion of patients receiving an eye exam was compared using GEE.
*A practice area was designated as rural if it was located in a geographic region with a population smaller than 10,000.