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Table 1 Patient baseline characteristics

From: Analgesic efficacy and safety of methylene blue combined with cocktail for periarticular infiltration following total knee arthroplasty: a prospective, randomized, controlled study

Patient characteristics

C group

M group

t/Z/χ2 value

P

(n = 35)

(n = 35)

Age (years)

68.8 ± 7.5

68.9 ± 7.1

 − 0.033

0.974a

Gender (male/female)

6/29

5/30

0.108

0.743b

Weight (kg)

63.9 ± 7.7

61.8 ± 6.4

1.266

0.21a

Height (cm)

154.9 ± 5.8

155.1 ± 7.5

 − 0.142

0.887a

BMI (kg/m2)

26.6 ± 2.4

25.8 ± 3.0

0.097

0.218a

ASA classification (I/II/III)

2/25/8

2/27/6

0.363

0.834c

Surgical duration (min)

87 ± 5.0

88 ± 5.9

 − 0.758

0.451c

  1. Values are given as the count or as the mean standard deviation (x̅ ± SD). ASA American Society of Anesthesiologists, BMI body mass index
  2. aStudent’s t test, bPearson chi-square test, cMann–Whitney U test
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Perioperative Medicine

ISSN: 2047-0525