Results of stepwise multiple linear regression analysis
| VARIABLE* | β WEIGHT | P VALUE | F VALUE | MEAN SQUARE |
|---|---|---|---|---|
| Group 3† | −0.19 | .006 | 9.88 | 13.26 |
| Principal place of practice | −0.17 | .01 | 6.15 | 8.25 |
| Age of physician | −0.15 | .03 | 5.66 | 7.59 |
| Methadone program | 0.14 | .05 | 4.24 | 5.69 |
↵* The following variables were included in the regression model: group (dummy coding), age group, sex, country of graduation, professional inspection visit program (dummy coding), place of practice, residency in family medicine, number of continuing professional development credits or hours in a 5-year period, and methadone program.
↵† Group 3 comprised physicians reporting little or no continuing professional development activity.