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Table 2 Post-operative haematocrit and haematocrit decline among different groups

From: Predictors of haematocrit in lumbar fusion for lumbar disc herniation: a surgical assessment

  

Frequency

Hct(post) (%)

P value

Hct decline (%)

P value

Gender

Male

375(54.6%)

34.54 ± 4.32

<0.001

9.20

<0.001

Female

312(45.4%)

30.30 ± 3.58

7.92

Smoking

Yes

189(27.5%)

34.70 ± 4.21

<0.001

8.85

.365

No

498(72.5%)

31.82 ± 4.38

8.53

Alcohol Drinking

Yes

43(6.3%)

35.31 ± 4.29

<0.001

8.91

.631

No

644(93.7%)

32.43 ± 4.48

8.60

Liver Disease

Yes

12(1.7%)

32.28 ± 3.96

.799

8.86

.837

No

675(98.3%)

32.62 ± 4.53

8.61

Anaemia

Yes

32(4.7%)

27.86 ± 2.46

<0.001

4.95

<0.001

No

655(95.3%)

32.85 ± 4.47

8.80

CCI

0

462(67.2%)

32.88 ± 4.47

.103

8.51

.684

1

162(23.6%)

31.86 ± 4.46

8.95

2

53(7.7%)

32.91 ± 5.08

8.49

3

9(1.3%)

30.88 ± 3.92

9.18

5

1(0.1%)

31.70

9.80

ASA

1

137(19.9%)

33.42 ± 4.69

.018

8.38

.217

2

467(68.0%)

32.46 ± 4.43

8.70

3

79(11.5%)

31.90 ± 4.55

8.73

4

4(0.6%)

36.70 ± 3.70

5.1

NNIS

0

516(75.1%)

32.81 ± 4.55

.096

8.40

.043

1

162(23.6%)

31.95 ± 4.38

9.44

2

9(1.3%)

33.19 ± 4.74

6.29

Surgery Segments

1

342(49.8%)

33.26 ± 4.43

<0.001

7.94

<0.001

2

292(42.5%)

32.16 ± 4.54

9.10

3

48(7.0%)

30.78 ± 4.45

10.70

4

5(0.7%)

32.48 ± 2.65

7.04

Length of ICU Stay

YES

67(9.8%)

31.42 ± 4.06

0.022

8.93

0.507

NO

620(90.2%)

32.74 ± 4.55

8.58

Occurrence of Redo Surgery

YES

11(1.6%)

33.36 ± 4.99

0.580

5.64

0.014

NO

676(98.4%)

32.60 ± 4.52

8.67

Wound Infection

YES

26(3.8%)

31.13 ± 4.12

0.089

8.09

0.499

NO

661(96.2%)

32.67 ± 4.53

8.64

  1. Hct (post) post-operative haematocrit, HCT decline decline of haematocrit, CCI Charlson Comorbidity Index, ASA American Society of Anaesthesiologists Physical Status Classes Index, NNIS National Nosocomial Infections Surveillance (pre-assessment scale)