Table 1 Baseline patient characteristics and pre- and perioperative characteristics.

From: Impact of Preemptive Analgesia on inflammatory responses and Rehabilitation after Primary Total Knee Arthroplasty: A Controlled Clinical Study

Variable

MMA with preemptive analgesia group

MMA without preemptive analgesia group

P-value

Patient characteristics

 Age (yr)

67.8 ± 7.2

68.8 ± 6.5

0.106

 Gender (male/female)

12/26

13/24

0.467

 BMI (kg m-2)

27.2 ± 2.7

26.8 ± 3. 1

0.08

 ASA (I/II/III)

2/26/10

2/29/6

0.370

Co-morbidities

 None

11

9

0.886

 Hypertension

15

17

 

 Diabetes

6

8

 

 Coronary artery disease

3

2

 

 others

2

1

 

 Side of surgery (R/L)

10/28

12/25

0.372

Preoperative data

 Pain at rest

6.11 ± 0.91

6.22 ± 0.95

0.148

 Pain at walking

6.65 ± 0.68

6.89 ± 0.61

0.101

 Hs-CRP (μg/ml)

1.99 ± 0.55

1.94 ± 0.52

0.644

Perioperative data

 Duration of surgery (min)

58.5 ± 8.6

56.1 ± 8.4

0.686

 Bleeding intraoperatively (ml)

423.5 ± 95.8

414.5 ± 98.4

0.207

 Duration of femoral tourniquet (min)

24.6 ± 6.4

23.9 ± 6.1

0.312

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