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Table 1 Demographic characteristics of the population. Data are expressed as median (interquartile range), or number (%). The p-value always refers to comparison between the OFA group and the OA group

From: Effect of opioid-free anaesthesia on post-operative period in cardiac surgery: a retrospective matched case-control study

Variables

OFA group

(n = 55)

OA group

(n = 55)

P-value

Age, (years)

69 (62–74)

69 (65–74)

0.066

Gender (M), n (%)

43 (78)

35 (64)

0.115

Body mass index (kg m −2)

26 (24–30)

26 (23–30)

0.162

ASA, n (%)

 2

3 (5)

7 (12)

 

 3

41 (75)

38 (69)

 

 4

11 (20)

10 (19)

 

EuroSCORE II (%)

1.51 (0.98–3.1)

1.69 (0.87–3.01)

0.805

Euroscore (%)

6 (5–9)

6 (3–8)

0.238

Medical history, n (%)

 Coronary disease

31 (56)

27 (49)

0.571

 Arrhythmia

8 (14)

13 (24)

0.332

 Dyslipidaemia

31 (56)

34 (62)

0.556

 Smoking history

23 (42)

19 (35)

0.556

 High blood pressure

42 (76)

43 (77)

1

 Diabetes

15 (27)

15 (27)

1

 Chronic renal insufficiency

12 (22)

7 (13)

0.276

 Stroke

4 (7)

4 (7)

1

 Obstructive sleep apnoea

7 (13)

7 (13)

1

Treatment, n (%)

 Beta blocker

34 (62)

34 (62)

1.00

 Calcic channel blocker

9 (16)

6 (11)

0.581

 Aspirin

32 (58)

28 (49)

0.596

 Clopidogrel

2 (4)

6 (11)

0.261

 Angiotensin enzyme converting inhibitor

21 (38)

23 (42)

0.832

 Statin

32 (58)

34 (62)

0.832

 Diuretics

21 (38)

19 (35)

0.850

Left Ventricular Ejection Fraction (%)

60 (51–65)

60 (50–65)

0.278

Creatinine (mmol l−1)

83 (72–96)

84 (70–98)

0.558