Table 2. Hazard Ratios of Accepting Any or at Least $5000 General Payments From Univariable and Multivariable Analyses.
| Receiving any general paymentsa | Accepting at least $5000 of general paymentsb | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Univariable | Multivariable | Univariable | Multivariable | ||||||||
| Risk factor | HR (95% CI) | P value | Risk factor | HR (95% CI) | P value | Risk factor | HR (95% CI) | P value | Risk factor | HR (95% CI) | P value |
| Specialty | Female sex | Specialty | Female sex | ||||||||
| Internal medicine | 1 [Reference] | <.001 | Internal medicine | 1 [Reference] | .03 | Internal medicine | 1 [Reference] | <.001 | Internal medicine | 1 [Reference] | .002 |
| Orthopedic surgery | 7.31 (6.70-7.97) | Orthopedic surgery | 5.36 (4.42-6.51) | Orthopedic surgery | 8.51 (7.87-9.22) | Orthopedic surgery | 10.24 (8.13-12.89) | ||||
| Neurosurgery | 4.46 (3.77-5.29) | Neurosurgery | 3.25 (2.24-4.72) | Neurosurgery | 5.83 (4.87-6.99) | Neurosurgery | 3.14 (1.47-6.68) | ||||
| Sex | Male sex | Sex | Male sex | ||||||||
| Female | 1 [Reference] | <.001 | Internal medicine | 1 [Reference] | .03 | Female | 1 [Reference] | <.001 | Internal medicine | 1 [Reference] | .002 |
| Male | 1.53 (1.49-1.58) | Orthopedic surgery | 7.01 (6.35-7.73) | Male | 3.26 (2.96-3.59) | Orthopedic surgery | 6.76 (6.20-7.36) | ||||
| NA | NA | Neurosurgery | 4.08 (3.37-4.94) | NA | NA | Neurosurgery | 4.80 (3.98-5.80) | ||||
| Age at graduation, per 5 y | 1.26 (1.24-1.29) | <.001 | Age at graduation, per 5 y | 1.23 (1.21-1.25) | <.001 | Age at graduation, per 5 y | 1.24 (1.19-1.29) | <.001 | Age at graduation, per 5 y | 1.21 (1.15-1.26) | <.001 |
Abbreviations: HR, hazard ratio; NA, not applicable.
a
Likelihood ratio test for comparing models with or without interaction between sex and specialty group on receiving any general payments: χ22 = 6.76 (P = .03).
b
Likelihood ratio test for comparing models with or without interaction between sex and specialty group on receiving at least $5000 of general payments: χ22 = 12.17 (P = .002).