Table 3 Characteristics of the patients assessed at 3 months according to the comparison with the score given before surgery and ICU admission

Number of patients (%)

42 (45)

51 (55)

Number of males (%)

28 (67)

36 (71)

0.822

Age, y: median (IQR)^a

73 (61-80)

74 (67- 78)

0.389

Education (%):

   Education (%): < 8 years

12 (29)

21 (41)

0.295

   ≥8 years

30 (72)

30 (59)

Use of any benzodiazepines (%)

3 (7)

8 (16)

0.334

Use of any antidepressants (%)

6 (14)

2 (4)

0.134

Use of any antihypertensive drugs (%)

36 (86)

42 (82)

0.780

Use of any B-blockers (%)

6 (14)

16 (31)

0.085

Use of any statins (%)

11 (26)

13 (25)

1

Smoking habits (%): no

12 (29)

13 (25)

0.921

Alcohol (%): no

25 (60)

24 (47)

0.322

Type of surgery (%):

General

5 (12)

19 (37)

0.011

Orthopaedic

20 (48)

13 (26)

Urologic

17 (40)

19 (37)

Type of anaesthesia (%): regional ± general

11 (26)

8 (16)

0.302

   general

31 (74)

43 (84)

ICU and hospital course

SAPS II median (IQR)^a

30 (24-45)

29 (24-39)

0.591

Mechanical Ventilation in ICU (%)

15 (36)

26 (51)

0.150

Delirium in ICU (%)

1 (2)

5 (10)

0.214

ICU LOS (days) median (IQR)^a

2 (1-2)

2 (1-3)

0.203

Hospital LOS^a (days) median (IQR)^a

7 (5-9)

7 (5-10)

0.590

Follow-up at 3 months

Perceived severity of illness > 5 (%)^b

5 (12)

18 (35)

0.009

PTSS-14 median (IQR)^a

25 (18-31)

24 (20-31)

0.685

HRQOL Comparison: worse (%)

14 (33)

20 (39)

0.711