Table 2 Clinical and laboratory parameters of the Low- and High-PIV Groups

Age^a

63.00 (51.00–67.00)

74.00 (59.00–81.00)

p = 0.010; W = 563.00¹

Sex (M/F)

20/21

23/18

p = 0.507; \({\chi }^{2}\)=0.44²

BMI^ab

24.42 (22.96–30.81)

27.34 (24.06–30.86)

p = 0.119; W = 554.50¹

Diagnosis, n (%)

p = 0.392; \({\chi }^{2}\)=2.30²

 Malignity

7 (58.33%)

5 (41.67%)

 Respiratory

10 (43.48%)

13 (56.52%)

 Operational

3 (30.00%)

7 (70.00%)

 Other

21 (56.76%)

16 (43.24%)

Comorbidity, n (%)

p = 0.145; \({\chi }^{2}\)=2.12²

 Present

26 (44.83%)

32 (55.17%)

 not present

15 (62.50%)

9 (37.50%)

HT, n (%)

10 (28.57%)

25 (71.43%)

p < 0.001; \({{\varvec{\chi}}}^{2}\)=11.22

DM, n (%)

7 (38.89%)

11 (61.11%)

p = 0.286; \({\chi }^{2}\)=1.14²

CV, n (%)

6 (35.29%)

11 (64.71%)

p = 0.173; \({\chi }^{2}\)=1.86²

Other disease, n (%)

18 (66.67%)

9 (33.33%)

p = 0.034; \({{\varvec{\chi}}}^{2}\)=4.47²

GCS^a

14.00 (6.00–15.00)

8.00 (3.00–15.00)

p = 0.126; W = 998.50¹

SOFA^a

6.00 (1.00–10.00)

9.00 (2.00–12.00)

p = 0.173; W = 693.50¹

APACHE II^ac

13.00 (7.50–20.50)

21.00 (14.00–28.00)

p = 0.015; W = 561.50¹

Lactate mmol/L^a

1.90 (1.30–3.00)

1.70 (1.10–3.80)

p = 0.937; W = 831.50¹

CRP mg/L^a

94.2 (29.7–143)

98.00 (48.50–180.00)

p = 0.266; W = 720.00¹

PCT µg/L^a

0.65 (0.31–4.34)

0.89 (0.24–5.80)

p = 0.492; W = 766.00¹