TABLE 2

Parental Knowledge of Potential Cancer Risk From Imaging Tests That Use Ionizing Radiation

Potential Malignancy RiskSkull Radiographs (n = 742)Head CT (n = 742)
Almost no risk at all (<1:1 000 000)282 (38.0)a271 (36.5)
Very small risk (1:1 000 000)195 (26.3)196 (26.4)
Small risk (1:10 000)91 (12.3)105 (14.2)a
Moderate risk (1:1000)40 (5.4)38 (5.1)
Large risk (1:100)6 (0.8)8 (1.1)
I do not know128 (17.3)124 (16.7)
  • Data are presented as n (%).

  • a Most correct estimate.