Table 4 Comparison of general data among the three groups of patients

n

45

77

38

Mortality at 3 months,n(%)

6 (13.3)

13 (16.9)

3 (7.9)

1.74

0.42

Mortality at 6 months,n(%)

7(15.6)

20 (25.9)

4 (10.5)

3.66

0.16

Male sex (%)

22 (48.9)

38 (49.4)

14 (36.8)

1.78

0.41

Age(years)

75.09 ± 7.82

76.53 ± 8.20

75.11 ± 7.49

0.66

0.52

Education level(years)

7.38 ± 3.63

8.13 ± 3.70

8.16 ± 3.81

0.68

0.51

CCI score

10.29 ± 3.68

10.88 ± 4.40

10.94 ± 3.86

0.37

0.69

Hypertension,n(%)

20 (44.4)

38 (49.4)

11 (28.9)

4.36

0.11

Diabetes,n(%)

16 (35.6)

24 (31.2)

14 (36.8)

0.46

0.80

Renal dysfunction,n(%)

8 (25.0%)

10(24.4)

6(21.4)

1.16

0.76

APACHEII score

15.64 ± 3.52

13.66 ± 4.92*

14.97 ± 6.16

2.51

0.84

SOFA score

10.47 ± 4.39

11.26 ± 4.24

11.03 ± 3.70*

0.52

0.60

Hb(g/L)

82.42 ± 14.92

81.78 ± 15.41

83.71 ± 16.80

0.20

0.82

Albumin(g/L)

23.36 ± 4.72

24.00 ± 3.38

23.95 ± 3.55

0.43

0.65

Duration of mechanical ventilation(h)

156.64 ± 36.54

169.89 ± 76.54

161.86 ± 38.55

0.65

0.82

Widow,n(%)

12(37.5)

21(51.2)

12(42.9)

3.20

0.36

Number of children

3.02 ± 1.06

3.02 ± 1.03

3.05 ± 0.93

0.01

0.98

Nursing home,n(%)

18(56.3%)

15(36.6%)

8(28.6%)

6.47

0.09