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Table 1 Facilities referrals/attendance and corresponding impact in the number of exams after the campaign

From: Impact of a radiological protection campaign in emergency paediatric radiology: a multicentric observational study in Brazil

Facility

Referrals/attendance before campaign (%)

Referrals after campaign

Attendances after campaign

Referrals/attendance after campaign (%)

Exam reduction

A

7.67

295

5.083

5.80

− 95

 

36.77

13.920

56.696

24.55

− 6.926

C

5.57

1.584

23.316

6.79

285

D

3.06

18

724

2.49

− 4

E

1.58

46

8.187

0.56

− 84

F

10.56

4.216

62.506

6.74

− 2.386

G

6.56

129

1.298

9.94

44

H

18.10

4.956

25.746

19.25

297

I

13.43

990

14.467

6.84

− 953

J

14.59

3.919

33.029

11.87

− 901

K

18.05

144

2.590

5.56

− 323

L

15.19

1.213

11.135

10.89

− 478

M

4.73

400

11.124

3.60

− 126

N

31.13

1.675

9.274

18.06

− 1.212

O

11.25

501

6.690

7.49

− 252

P

11.49

588

6.485

9.07

− 157

Q

3.13

103

5.256

1.96

− 61

R

7.11

3.977

49.608

8.02

448

S

2.75

64

3.096

2.07

− 21

  

38.738

336.310

 

− 12.906

     

− 25%

  1. *The exam reduction is the difference between the referrals/attendance ratio before and after the campaign multiplied by the number of attendances after the campaign
  2. **The overall reduction of 25% is the number of exams after the campaign (38,738) divided by the number of exams that would be done without the campaign (38,738 + 12,906). The reduction by type of exam and age group are shown in Table 2