Table 2

Descriptive statistics of dependent and independent variables

DescriptionFrequency or mean (range)
Dependent variable
SuedPhysician ever sued 1 Jan 1990–31 Aug 19973423 (11.3%)
Independent variable(s)
AgeAge of physician (at 31 Aug 1997)45.4 (30–98)
AnesthesiologyPhysician specialty = anesthesiology1757 (5.8%)
OB/GYNPhysician specialty = OB/GYN1636 (5.4%)
Surgical specialtyPhysician specialty = orthopedic surgery, plastic surgery, neurosurgery1908 (6.3%)
Other surgeryPhysician specialty = other surgery1030 (3.4%)
RadiologyPhysician specialty = radiology1545 (5.1%)
Emergency medicinePhysician specialty = emergency medicine1121 (3.7%)
Primary carePhysician specialty = family practice, internal medicine, pediatrics (with no subspecialty)10056 (33.2%)
IMGInternational (outside US and Canada) medical school graduate10086 (33.3%)
Graduate of medical school outlier (<10th percentile)Physician is a graduate of a US medical school classified as a low outlier1121 (3.7%)
Graduate of medical school outlier (>90th percentile)Physician is a graduate of a US medical school classified as a high outlier3120 (10.3%)