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Table 1 Characteristics of Patients: (in brackets: useful / not useful / no assessment)

From: Physicians perceived usefulness of high-cost diagnostic imaging studies: results of a referral study in a German medical quality network

Sex N Age CT MRI Cath. All useful in % (95% CI)
Female 132 54.8 + 16.0 min 17; max 85 51 68 13 (106 / 23 / 3) 80,3 (72.7–86.2)
Male 100 56.0 + 16,6 min 13; max 85 44 28 28 (75 / 18 / 7) 75,0 (65.7–82.5)
No declaration 2 42 y, 51 y 1 1 0 (2 / 0 / 0) 100
Amount 234 55.3 + 16.2 min 13; max 85 96 97 41 (183 / 41 / 10) 78,2 (72.5–83.0)
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