Table 3 Radiology utilization among physicians and general adults

X-ray

 General adults

1.00

 Physicians

0.85

0.72–0.99

0.04

Sonography

 General adults

1.00

 Physicians

1.04

0.90–1.20

0.62

Computed tomography

 General adults

1.00

 Physicians

1.14

0.95–1.37

0.16

Magnetic resonance imaging

 General adults

1.00

 Physicians

2.19

1.68–2.84

<0.001

Radioisotope scanning

 General adults

1.00

 Physicians

0.97

0.66–1.42

0.87

Positron emission tomography

 General adults

1.00

 Physicians

1.57

0.39–6.40

0.53

Interventional procedures

 General adults

1.00

 Physicians

0.67

0.54–0.83

<0.001