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Table 1 Demographic data, duration of surgery, anesthesia and block performance in the two groups

From: Laparoscopic assisted versus ultrasound guided transversus abdominis plane block in laparoscopic bariatric surgery: a randomized controlled trial

 

Total (n = 120)

Group

p-vaue

UTAP (n = 60)

LTAP (n = 60)

Age (years)

 Min–Max

18.00–56.00

21.00–56.00

18.00–56.00

t(W)(df=106.835) = 1.595

 Mean ± SD

31.08 ± 8.61

32.23 ± 7.20

29.92 ± 9.74

p = .114 NS

 SE of Mean

0.79

0.93

1.26

 

 95.0% CI of the mean

29.52–32.63

30.37–34.09

27.40–32.43

 

Sex

 Male

50 (41.67%)

23 (38.33%)

27 (45.00%)

χ2(df=1) = 0.549

 Female

70 (58.33%)

37 (61.67%)

33 (55.00%)

p = .459 NS

Sex ratio (male: female ratio)

71.4%

62.1%

81.8%

p = .235

Weight (kg)

 Min–Max

82.00–137.00

88.00–120.00

82.00–137.00

t(W)(df=99.859) = 1.136

 Mean ± SD

105.53 ± 10.76

104.42 ± 8.14

106.65 ± 12.83

p = .259 NS

 SE of Mean

0.98

1.05

1.66

 

 95.0% CI of the mean

103.59–107.47

102.31–106.52

103.33–109.96

 

Height (meter)

 Min–Max

1.46–1.82

1.53–1.70

1.46–1.82

t(W)(df=99.953) = 1.209

 Mean ± SD

1.62 ± 0.06

1.62 ± 0.05

1.63 ± 0.08

p = .229 NS

 SE of Mean

0.01

0.01

0.01

 

 95.0% CI of the mean

1.61–1.64

1.60–1.63

1.61–1.65

 

BMI (kg/m2)

 Min–Max

35.11–49.45

35.11–47.84

35.11–49.45

t(df=118) = 0.647

 Mean ± SD

40.00 ± 3.16

39.97 ± 3.06

40.03 ± 3.28

p = .519 NS

 SE of Mean

0.29

0.39

0.42

 

 95.0% CI of the mean

39.43–40.57

38.18–40.76

39.18–40.88

 

WHO classification of BMI

 ‘30.0–34.9: Obesity class I’

18 (15.00%)

5 (8.33%)

13 (21.67%)

χ2(df=2) = 5.832

 ‘35.0–39.9: Obesity class II’

50 (41.67%)

30 (50.00%)

20 (33.33%)

p = .056 NS

 ‘40 or Above: Obesity class III’

52 (43.33%)

25 (41.6%)

27 (45.00%)

 

ASA

 Two

85 (70.83%)

40 (66.67%)

45 (75.00%)

χ2(df=1) = 1.008

 Three

35 (29.17%)

20 (233.33%)

15 (25.00%)

p = .315 NS

Duration of surgery (min)

 Min–Max

34.00–62.00

34.00–58.00

36.00–62.00

t(W)(df=115.704) = 0.651

 Mean ± SD

45.95 ± 5.72

46.3 ± 6.13

45.62 ± 5.32

p = .516

 SE of Mean

0.52

0.79

0.68

 

 95.0% CI of the mean

-1.39–2.76

44.71–47.88

44.24–46.99

 

Duration of anesthesia (min)

 Min–Max

40.00–65.00

44.00–65.00

40.00–61.00

t(W)(df=110.277) = 7.277

 Mean ± SD

50.93 ± 5.97

54.23 ± 5.60

47.62 ± 4.27

p < .001*

 SE of Mean

0.54

0.72

0.55

 

 95.0% CI of the mean

49.85–52.00

52.79–55.68

46.51–48.72

 

Duration of block performance (min)

 Min–Max

2.00–10.00

5.00–10.00

2.00–4.00

t(W)(df=82.271) = 17.36

 Mean ± SD

4.96 ± 2.56

7.13 ± 1.76

2.8 ± 0.8

p < .001*

 SE of Mean

0.23

0.22

0.10

 

 95.0% CI of the mean

3.83–4.82

6.67–7.58

2.59–3.00

 
  1. n number of patients, Min–Max Minimum to Maximum, SD Standard deviation, SE Standard error, CI Confidence interval, t Independent Sample t test, W Welch's correction, χ2 Pearson Chi-Square, df degree of freedom, NS Statistically not significant (p ≥ 05). *: Statistically significant (p < .05)