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Table 2 The results of the univariate analysis

From: Association between preoperative platelet and 30-day postoperative mortality of adult patients undergoing craniotomy for brain tumors: data from the American College of Surgeons National Surgical Quality Improvement Program database

 

Statistics

OR

95% CI

P value

Sex, N (%)

    

 Male

8578 (47.489%)

Ref.

  

 Female

9485 (52.511%)

0.643

(0.532, 0.777)

< 0.00001

Race, N (%)

    

 White

12,822 (70.985%)

Ref.

  

 Asian

526 (2.912%)

0.767

(0.406, 1.448)

0.41330

 African American

1215 (6.726%)

0.899

(0.604, 1.338)

0.60128

 Unknown race

3500 (19.377%)

1.152

(0.916, 1.448)

0.22561

Age range, N (%)

    

 18–40

2921 (16.171%)

Ref.

  

 41–60

7499 (41.516%)

2.780

(1.737, 4.448)

0.00002

 61–80

7046 (39.008%)

5.005

(3.164, 7.916)

< 0.00001

 >81

597 (3.305%)

15.014

(8.938, 25.222)

< 0.00001

BMI

28.709 ± 6.743

0.986

(0.972, 1.001)

0.07702

Diabetes, N (%)

    

 No

15,938 (88.236%)

Ref.

  

 Yes (Noninsulin-dependent)

1341 (7.424%)

1.528

(1.119, 2.088)

0.00770

 Yes (Insulin-dependent)

784 (4.340%)

2.558

(1.855, 3.529)

< 0.00001

Smoking status, N (%)

    

 No

14,562 (80.618%)

Ref.

  

 Yes

3501 (19.382%)

1.125

(0.895, 1.414)

0.31210

Severe COPD, N (%)

    

 No

17,242 (95.455%)

Ref.

  

 Yes

821 (4.545%)

2.524

(1.851, 3.444)

< 0.00001

Hypertension, N (%)

    

 No

11,158 (61.773%)

Ref.

  

 Yes

6905 (38.227%)

2.256

(1.867, 2.725)

< 0.00001

Dialysis, N (%)

    

 No

18,007 (99.690%)

Ref.

  

 Yes

56 (0.310%)

6.593

(3.101, 14.018)

< 0.00001

Steroid use for chronic condition N (%)

    

 No

15,325 (84.842%)

Ref.

  

 Yes

2738 (15.158%)

2.349

(1.909, 2.890)

< 0.00001

Bleeding disorders N (%)

    

 No

17,690 (97.935%)

Ref.

  

 Yes

373 (2.065%)

2.263

(1.428, 3.587)

0.00051

Na

138.626 ± 3.187

0.911

(0.887, 0.936)

< 0.00001

Cr

0.862 ± 0.444

1.246

(1.118, 1.389)

0.00007

WBC

9.507 ± 4.474

1.073

(1.056, 1.090)

< 0.00001

PLT

244.122 ± 76.773

0.998

(0.997, 0.999)

0.00154

HCT

40.313 ± 4.803

0.922

(0.907, 0.938)

< 0.00001

BUN

17.324 ± 8.076

1.043

(1.035, 1.050)

< 0.00001

Preoperative transfusions N (%)

    

 No

18,000 (99.651%)

Ref.

  

 Yes

63 (0.349%)

5.751

(2.723, 12.147)

< 0.00001

preoperative systemic sepsis N (%)

    

 No

17,393 (96.291%)

Ref.

  

 SIRS

659 (3.648%)

2.599

(1.854, 3.644)

< 0.00001

 Septic Shock

11 (0.061%)

9.182

(1.978, 42.630)

0.00465

Operation time

211.344 ± 131.693

0.998

(0.998, 0.999)

0.00011

Emergency case N (%)

    

 No

16,873 (93.412%)

Ref.

  

 Yes

1190 (6.588%)

2.844

(2.198, 3.680)

< 0.00001

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