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Table 3 Reliability analysis of the different study scales

From: Investigating computed tomography radiographers’ expertise in responding to severe contrast media reactions: a cross-sectional study

Scale

No. items

Cronbach’s alpha

Mean score

SD score

Adequate knowledge rate⁂

Overall knowledge scale

40

0.854

25.02

5.62

82.6%

Overall knowledge scale without general knowledge about IVCM

35

0.845

-

-

-

General knowledge about IVCM

5

0.450

2.85

0.91

64.3%

Risk factors of SCMR

10

0.727

5.73

1.80

56.4%

Precautions against SCMR

5

0.539

4.09

0.96

93.4%

Recognizing SCMR

10

0.751

7.14

2.20

80.1%

SCMR Management

10

0.859

5.21

2.37

50.2%

  1. ⁂Adequate knowledge is defined as a score that surpasses the theoretical average, which is calculated by dividing the maximum possible score by 2. For example, when it comes to general knowledge (with a maximum score of 40), a score greater than 20 is considered sufficient. However, for risk factors (with a maximum score of 10), a score higher than 5 is considered suitable
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BMC Medical Education

ISSN: 1472-6920

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