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Table 1 Assess Respiratory Risk in Surgical Patients in Catalonia (ARISCAT) risk score in the logistic regression model

From: PROtective Ventilation with a low versus high Inspiratory Oxygen fraction (PROVIO) and its effects on postoperative pulmonary complications: protocol for a randomized controlled trial

 

βcoefficient

Score *

Age (years)

 ≤ 50

0

0

 51–80

0.331

3

 > 80

1.619

16

Preoperative SpO2 (%)

 ≥ 96

0

0

 91–95

0.802

8

 ≤ 90

2.375

24

Respiratory infection in the last month

 No

0

0

 Yes

1.698

17

Preoperative anemia (Hb ≤10 g/dl)

 No

0

0

 Yes

1.105

11

Surgical incision

 Peripheral

1.480

15

 Upper abdominal

2.431

24

 Intrathoracic

  

Duration of surgery (h)

 ≤ 2

1.593

0

 2–3

2.268

16

 > 3

0.768

23

Emergency procedure

 No

0

0

 Yes

0.768

8

  1. *A risk score ≥ 26 predicts an intermediate to high risk for postoperative pulmonary complications after abdominal surgery. The simplified risk score was the sum of each logistic regression coefficient multiplied by 10, after rounding off its value
  2. Hb hemoglobin