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Table 1 Characteristics of patients with complete data collected

From: The evaluation of risk prediction models in predicting outcomes after bariatric surgery: a prospective observational cohort pilot study

Characteristics

Complete data n = 197

No outcome weight n = 34

p

Mean age (SD)

45 years (12.8)

44.34 (11.6)

p = 0.63

Sex

 

 Male

21.3%

22.9%

p = 1.0

 Female

79.7%

77.1%

 

Ethnicity

 

 White British

68.5%

68.6%

p = 1.0

 Other

31.5%

31.4%

 

Attended pre-assessment

96.5%

91.4%

p = 0.072

Smoker

p = 0.199

 Current

12.7%

11.4%

 

 Ex-smoker

25.4%

40%

 Non-smoker

61.9%

48.6%

Alcohol

p = 0.251

 Current drinker

52.2%

50%

 

 Non-drinker

47.8%

50%

 

ASA-PS

p = 0.892

 ASA 1

13.7%

8.5%

 

 ASA 2

67%

68.6%

 

 ASA 3

19.3%

20.0%

 

 ASA 4

0%

2.8%

 

Diabetic

p = 0.73

 Insulin controlled

3.6%

5.7%

 

 Tablet controlled

24.9%

17.1%

 

 Diet controlled

2%

2.9%

 

 Non-diabetic

69.5%

74.3%

 

Other comorbidities

p < 0.001

 Ischaemic heart disease

3%

0%

 

 Liver disease

1.5%

0%

 

 OS-MRS mean (SD)

1.09 (0.77)

1.17 (0.98)

p = 0.564

 POSSUM physiology mean (SD)

14.48 (2.63)

15.6 (2.24)

p = 0.013

 POSSUM operative mean (SD)

9.11 (0.64)

8.34 (0.94)

p < 0.001

95% CI

(0.52–1.02)

Postoperative destination

p = 0.42

 Intensive care

0.5%

0%

 

 Post anaesthetic care unit (PACU)

36.6%

45.7%

 

 Ward

62.9%

54.3%

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