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Table 2 Distribution of surgical types

From: Association between preoperative hypokalemia and postoperative complications in elderly patients: a retrospective study

Surgical types

Hypokalemia (n = 436)

Normokalemia (n = 551)

P

OR

95%CI

Gastrointestinal surgery

83 (19.03%)

99 (17.98%)

0.667#

1.074

0.777–1.483

Urology

72 (16.51%)

103 (18.69%)

0.373#

0.860

0.618–1.198

Thoracic surgery

59 (13.53%)

106 (19.24%)

0.017#

0.657

0.465–0.929

Gynecology

78 (17.89%)

45 (8.17%)

< 0.001#

2.450

1.657–3.622

Orthopedics

46 (10.55%)

75 (13.61%)

0.145#

0.749

0.506–1.106

Biliopancreatic surgery

58 (13.30%)

51 (9.26%)

0.044#

1.504

1.009–2.242

Liver surgery

22 (5.05%)

31 (5.63%)

0.688#

0.891

0.508–1.563

Oral and maxillofacial surgery

6 (1.38%)

26 (4.72%)

0.003#

0.282

0.115–0.691

Thyroid and breast surgery

2 (0.46%)

4 (0.73%)

0.699*

0.630

0.115–3.457

Otorhinolaryngology

3 (0.69%)

3 (0.54%)

> 0.999*

1.266

0.254–6.302

Ophthalmology

2 (0.46%)

4 (0.73%)

0.901*

0.630

0.115–3.457

Throat head and neck surgery

3 (0.69%)

2 (0.36%)

0.793*

1.902

0.316–11.432

Vascular surgery

2 (0.46%)

2 (0.36%)

> 0.999*

1.265

0.177–9.017

  1. Data were expressed by frequencies and percentages.
  2. OR odds ratio (unadjusted), CI confidence interval
  3. #Chi-square test
  4. *Corrected Chi-square test