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Table 1 Patients characteristics

From: Clinical characteristics of pyogenic spondylitis and psoas abscess at a tertiary care hospital: a retrospective cohort study

 

All

Pyogenic spondylitis

Psoas abscess

p value

n = 126

n = 72

n = 54

Variables

n (%) or mean ± SD or median [IQR]

 

Male

69 (55)

38 (53)

31 (57)

0.61

Age, year

72 ± 11

74 ± 10

70 ± 11

0.07

Length of stay, days

60 [39–97]

60 [41–106]

58 [36–94]

0.06

In-hospital death

11 (8.7)

3 (4.1)

8 (15)

0.05

Invasive interventions

54 (43)

25 (35)

29 (54)

0.045

 Percutaneous drainage

50 (40)

21 (29)

29 (54)

0.006

 Operation

6 (4.8)

5 (6.9)

1 (1.9)

0.24

  Laminectomy

4 (3.2)

4 (5.6)

0 (0.0)

0.13

  Surgical drainage

2 (1.6)

1 (1.4)

1 (1.9)

1.00

Days after admission to diagnosis, day

0 [0–11]

0 [0–5]

2 [0–20]

0.0167

Days after admission to diagnosis, day ≥ 14 days

28 (22)

10 (14)

18 (33)

0.016

Antibiotics use, days

28 [17–42]

28 [18–42]

30 [15–42]

0.79

 Over 6 weeks

38 (30)

23 (32)

15 (28)

0.70

Symptoms

 Lumbago or back pain

72 (57)

49 (68)

23 (43)

0.004

 Fever

51 (40)

32 (44)

19 (35)

0.30

 Shock

11 (8.7)

2 (2.8)

9 (17)

0.009

Classification

 Type A*

33 (46)

 Type B*

18 (25)

 Type C*

21 (29)

 Multiple abscesses

30 (56)

Co-morbidities

102 (81)

56 (78)

46 (85)

0.36

Hospitalized for comorbidity

57 (45)

27 (38)

30 (56)

0.044

Hospitalized for other infections

17 (13)

6 (8.3)

11 (20)

0.07

Bacterial detection

84 (67)

45 (63)

39 (72)

0.34

 Gram-positive cocci

63 (50)

35 (49)

28 (52)

0.72

 Gram-negative rods

19 (15)

8 (11)

11 (20)

0.15

 Mycobacterium

2 (1.6)

2 (2.8)

0 (0.0)

0.51

Vital signs

 SBP, mmHg

132 ± 31

137 ± 28

127 ± 35

0.10

 DBP, mmHg

75 ± 18

78 ± 15

70 ± 20

0.0151

 Body temperature,  °C

37.3 ± 1.1

37.4 ± 1.1

37.2 ± 1.1

0.27

 Heart rate, /min

89 ± 19

88 ± 19

89 ± 19

0.30

Laboratory data

 WBC, × 102/μL

113 ± 51

106 ± 41

122 ± 61

0.07

 Hb, g/dL

11.3 ± 2.2

11.7 ± 1.8

10.7 ± 2.5

0.0116

 Plt, × 104/μL

22.8 ± 11.8

24.8 ± 11.5

20.0 ± 11.9

0.0234

 CRP, mg/dL

11.1 ± 9.8

9.4 ± 8.4

13.3 ± 11.0

0.0233

 T-bil, mg/dL

0.8 ± 0.5

0.8 ± 0.4

0.8 ± 0.5

0.75

 Alb, g/dL

3.3 ± 0.6

3.4 ± 0.6

3.1 ± 0.7

0.0045

 AST, IU/L

33 ± 30

31 ± 28

37 ± 31

0.26

 ALT, IU/L

26 ± 23

26 ± 25

24 ± 19

0.73

 LDH, IU/L

261 ± 123

239 ± 88

290 ± 153

0.0233

 Blood sugar, mg/dL

152 ± 71

141 ± 66

165 ± 76

0.06

 BUN, mg/dL

25.6 ± 22.8

20.9 ± 10.6

32.0 ± 32.0

0.0069

 Cr, mg/dL

1.3 ± 1.7

1.0 ± 0.8

1.7 ± 2.5

0.0178

 Na, mmol/L

137.0 ± 5.0

137.2 ± 5.1

136.7 ± 4.8

0.57

 K, mmol/L

4.0 ± 0.6

4.0 ± 0.5

3.9 ± 0.7

0.42

  1. *Classification by Pola et al. [17]