Table 3 Predictors of inappropriateness of plain abdominal radiography according to the French National Authority for Health (HAS) and the American College of Radiology (ACR)

 - HUG

Ref

Ref

 - HDL

3.71 (1.72–7.99)

3.88 (1.78–8.45)

 - ≤ 65 years

Ref

Ref

 - > 65 years

2.79 (1.97–3.69)

2.41 (1.74–3.32)

 - Men

Ref

Ref

 - Women

2.10 (1.58–2.78)

1.95 (1.46–2.59)

 - 1

Ref

Ref

 - 2

0.51 (0.18–1.46)

0.53 (0.18–1.53)

 - 3

0.43 (0.16–1.20)

0.50 (0.18–1.42)

 - 4

0.35 (0.09–13.2)

0.39 (0.10–1.54)

 - Daytime

Ref

Ref

 - Nighttime

1.28 (0.93–1.77)

1.35 (0.97–1.89)

 - Week

Ref

Ref

 - Weekend

0.84 (0.62–1.13)

0.83 (0.61–1.13)

 - No

Ref

 - Yes

1.79 (1.19–2.69)