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Table 2 Baseline characteristics of study patients

From: Incidence of life-threatening respiratory events after laparoscopic colon surgery with or without continuous respiratory rate monitoring

Variable

Respiratory rate monitoring (n = 69)

Traditional monitoring (n = 126)

P value

Age (year)

64.8 ± 12.7

64.3 ± 13.3

0.818

Gender (M/F)

39/30

69/57

0.881

BMI (kg/m2)

22.3 ± 3.2

22.9 ± 3.1

0.201

ASA grade (I/II/III/IV)

12/53/4/0

20/100/6/0

0.908

% VC

107.1 ± 20.3

112.6 ± 14.7

0.052

FEV1.0%

76.3 ± 10.8

79.0 ± 11.1

0.103

Smoking

30/69

30/126

0.006

COPD

11/69

3/126

0.001

Active liver diseasea

11/69

26/126

0.453

Hemodialysis

4/69

4/126

0.457

  1. Data are presented as mean ± standard deviation
  2. BMI body mass index, ASA American Society of Anesthesiologists, %VC % vital capacity, FEV1.0% forced expiratory volume 1.0 (sec) %, COPD chronic obstructive pulmonary disease, DM diabetes mellitus
  3. aAspartate aminotransferase > 30