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Table 2 Intra-operative and postoperative characteristics of patients who underwent cholecystectomy due to cholecystits grouped by NLR

From: The utility of the preoperative neutrophil-to-lymphocyte ratio in predicting severe cholecystitis: a retrospective cohort study

 

Total

NLR <3

NLR ≥3

p-value

 

(n = 632)

(n =376)

(n =256)

 

Operative procedure

   

0.833

 Open cholecystectomy

6 (0.9)

1 (0.3)

5 (2.0)

 

 Laparoscopic cholecystectomy

   

  - 4 port procedure

204 (32.3)

120 (31.9)

84 (32.8)

  - 3 port procedure

66 (10.4)

43 (11.4)

23 (9.0)

  - 2 port procedure

307 (48.6)

174 (46.3)

133 (52.0)

  - single port procedure

49 (7.8)

38 (10.1)

11 (4.3)

Mean operative time (min)

   

< 0.001

 Mean ± SD

76.5 ± 32.7

70.3 ± 25.4

85.6 ± 39.5

 

 Median (range)

70.0 (30 – 370)

65.0 (30 – 175)

77.5 (30 – 370)

Insertion of a drain

   

0.002

 No

373 (59.0)

241 (64.1)

132 (51.6)

 

 Yes

259 (41.0)

135 (35.9)

124 (48.4)

 

Open conversion

4 (0.6)

2 (0.5)

2 (0.8)

0.485

Addition of one or more port(s)

5 (0.8)

4 (1.1)

1 (0.4)

 

Frequency of total analgesics

   

0.385

 Mean ± SD

3.3 ± 3.9

3.2 ± 3.7

3.5 ± 4.3

 

 Median (range)

2.0 (0 – 22)

2.0 (0 – 20)

2.0 (0 – 22)

Postoperative hospital stay (days)

   

< 0.001

 Mean ± SD

4.4 ± 2.8

3.8 ± 2.1

5.2 ± 3.4

 

 Median (range)

4.0 (1 – 24)

3.0 (1 – 23)

5.0 (1 – 24)

Postoperative complications

37 (5.9)

16 (4.3)

21 (8.2)

0.056

 Voiding difficulty

8

4

4

 

 Pleural effusion

8

4

4

 Wound infection

5

2

3

 Pneumonia

5

2

3

 Bleeding

4

2

2

 Bile leakage

3

1

2

 Pneumothorax

1

1

0

 Pancreatitis

1

0

1

 Delayed gastric emptying

2

0

2

 
  1. Abbreviations: NLR neutrophil-to-lymphocyte ratio, SD standard deviation.