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Table 2 Association of Parkland Grading Scale with Pre-Operative Parameters n = 206

From: Utility of the Parkland Grading Scale to determine intraoperative challenges during laparoscopic cholecystectomy: a validation study on 206 patients at an academic medical center in Nepal

 

Parkland Grading Scale

p value

1 (n = 67)

2(n = 75)

3(n = 42)

4(n = 15)

5(n = 6)

Age, median

40

(21–68)

46

(15–67)

43

(23–67)

46

(30–75)

56

(37–75)

0.296*

WBC, median (range)

7000

(4200–10800)

6500

(4400–11300)

6650

(4300–13000)

6400

(4500–8800)

7400

(4500–8800)

0.289*

Total Bilirubin,

median(range)

0.6

(0.3–1.7)

0.6

(0.36-5)

0.6

(0.4–2.5)

0.5

(0.4–1.8)

0.6

(0.4–0.8)

0.420*

ALT

34

(17–95)

34

(16–143)

35

(20–132)

29

(13–138)

37

(22–77)

0.443*

AST

28

(12–67)

31

(12–67)

28.5

(17–123)

34

(14–124)

41

(22–58)

0.809*

BMI, median(range)

23.2

(18.3–29.4)

23.4

(18.4–35.2)

25.1

(20.1–35.2)

25.8

(21.1–36.1)

26.9

(21.3–27.9)

0.006*

Largest stone,

mm(range)

10.5

(4–26)

12

(2–30)

10.2

(5–37)

15

(3–40)

10

(12–22)

0.005*

H/o Cholecystitis, n(%)

     

< 0.001**

Yes

No

2(3)

65(97)

2(2.7)

73(97.3)

11(26.2)

31(73.8)

3(20)

12(80)

2(28.6)

5(71.4)

h/o of previous

abdominal surgery, n(%)

     

0.350**

Yes

No

15(22.4)

52(77.6)

10(13.3)

65(86.7)

6(14.3)

36(85.7)

4(26.7)

11(73.3)

-

7(100)

GB thickness, n(%)

     

< 0.001**

< 4mm

> 4mm

65(97.1)

2(2.9)

74(98.6)

1(2.4)

30(71.4)

12(28.6)

8(53.3)

7(46.7)

1(14.3)

6(85.7)

Peri-cholecystic

collection, n(%)

     

0.003**

Yes

No

-

67(100)

1(1.3)

74(98.7)

1(2.4)

41(97.6)

1(6.7)

14(93.3)

2(28.6)

5(71.4)

  1. *Kruskal –Wallis test was used to assess the association of grade with continuous measures
  2. **Fisher’s Exact Test was used to test the association of grade with binary (categorical) variables