All the items of the NAH guidelines specified on the form

Yes

17

8.3

No

189

91.7

Type of clinical information provided on the request forms

Clinical diagnosis

72

35

Symptoms

38

18.4

Syndromes

35

17

Clinical signs

20

9.7

Clinical purpose

16

7.8

Other information

6

2.9

Past history

5

2.4

No clinical information

41

19.9

Pertinence of the request

Yes

129

62.6

No

38

18.4

Couldn’t be assessed*

39

18.9

Appropriateness

Appropriate

79

38.3

Appropriate in special cases

17

8.3

Specialized examination

35

17

Not appropriate

36

17.5

Couldn’t be assessed*

39

18.9

Grade of recommendation of CT Scan

Grade B

110

53.4

Grade C

21

10.2

Not appropriate/not assessed*

76

36.4