Table 4 Unadjusted and adjusted intervention effects
Intervention | OR (95% CI) | P value |
|---|---|---|
Regression model 1a: unadjusted effect of insert and outsert (primary outcome) | ||
Outsert | 1.01 (0.98, 1.04) | 0.74 |
Insert | 0.99 (0.96, 1.02) | 0.50 |
Regression model 1b: effect of insert and outsert, adjusted for physician characteristics | ||
Outsert | 1.00 (0.97, 1.03) | 0.77 |
Insert | 0.99 (0.96, 1.02) | 0.58 |
Physician characteristics | ||
Physician age (per 10 years) | 1.00 (0.97, 1.04) | 0.94 |
Sex (reference is male) | 1.08 (1.03, 1.12) | < 0.0001 |
Canadian medical graduate (reference is no) | 0.93 (0.89, 0.97) | < 0.0001 |
Years in practice (per 10 years) | 0.96 (0.91, 0.99) | 0.03 |
Total visits (per 100 visits) | 1.00 (1.00, 1.00) | 0.23 |
Total billings (per $10,000) | 1.00 (1.00, 1.00) | 0.10 |
Practice location (reference is Southern) | 0.97 (0.91, 1.03) | 0.32 |
Rural practice (reference is no) | 0.99 (0.94, 1.03) | 0.55 |
Regression model 2: unadjusted effect of insert and outsert (secondary outcome) | ||
Outsert | 1.01 (0.98, 1.04) | 0.60 |
Insert | 0.99 (0.96, 1.02) | 0.64 |