Table 1 Patient`s characteristics.

From: Incidence of postoperative complications is underestimated if outcome data are recorded by interns and first year residents in a low volume hospital setting

Patient`s characteristics

Total (n = 575)

M (± SD) or N (%)

Gender (male/female)

306/269

(53%/47%)

Age (years)

55.03 ± 16.77

BMI (kg/m)

29.68 ± 7.81

≤ 18

7 (1.2%)

18.5–24.9

172 (29.9%)

25.0–29.9

178 (31.0%)

30.0–34.9

60 (10.4%)

35.0–39.9

66 (11.5%)

 ≥ 40

87 (15.1%)

NA

5 (0.9%)

ASA

ASA 1

80 (14%)

ASA 2

350 (61%)

ASA 3

144 (25%)

ASA 4

1 (0%)

Charlson comorbidity index

 0

393 (68.35%)

 1

83 (14.43%)

 2

66 (11.48%)

 3

19 (3.30%)

 ≥ 4

14 (2.43%)

Smoking habits

 Current

147 (25.6%)

 Former

32 (5.6%)

 Never

226 (39.3%)

 NA

170 (29.6%)

Surgical procedures

 BS

132 (23%)

 CHE

76 (13%)

 AWS

241 (42%)

 CRS

81 (14%)

 Varia

45 (8%)

  1. M mean, N number, SD standard deviation, BMI body mass index, ASA American Society of Anesthesiologists, NA not available data.
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