Factors associated with higher frequency of diagnostic difficulty
| Diagnostic difficulty OR (CI)* | |
| Gender | 1.09 (0.82 to 1.43) |
| Formal consultation | |
| 1–2 times per week | 0.91 (0.39 to 2.09) |
| 3–4 times per week | 0.80 (0.35 to 1.84) |
| 5 or more times per week | 0.75 (0.33 to 1.70) |
| Experience in private practice/non-group model HMO | 0.85 (0.63 to 1.13) |
| Fewer years since residency | 1.04 (1.02 to 1.06) |
| Worse information processing | 1.29 (1.04 to 1.60) |
| Referral process problems | 1.43 (1.16 to 1.78) |
| Patient-related barriers | 1.07 (0.89 to 1.28) |
↵* OR for each 1-unit change, adjusted for all listed factors and geographic region.
HMO, health maintenance organisation.