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Table 2 VAS scores and morphine equivalents consumption

From: Analgesic effect of single-shot ropivacaine at different layers of the surgical site in primary total hip arthroplasty: a randomised, controlled, observer-blinded study

Variables

Group A (n = 40)

Group B (n = 40)

Group C (n = 39)

P values*

Resting VAS

 2 h

2.4 ± 0.7

2.3 ± 0.9

3.4 ± 1.0

< 0.001**

 6 h

2.3 ± 0.6

2.1 ± 0.6

2.9 ± 0.7

< 0.001**

 12 h

2.2 ± 0.8

2.0 ± 0.5

2.6 ± 0.8

0.002**

 24 h

1.8 ± 0.4

1.8 ± 0.6

1.8 ± 0.5

0.834

 36 h

1.7 ± 0.6

1.6 ± 0.6

1.6 ± 0.6

0.850

 48 h

1.2 ± 0.4

1.2 ± 0.4

1.3 ± 0.6

0.268

 60 h#

1.1 ± 0.3

1.1 ± 0.3

1.3 ± 0.5

0.153

 72 h#

1.1 ± 0.3

1.0 ± 0.2

1.2 ± 0.4

0.122

Movement VAS

 6 h

3.8 ± 0.7

3.7 ± 0.9

4.6 ± 0.8

< 0.001**

 12 h

3.7 ± 0.8

3.5 ± 0.6

4.2 ± 0.9

< 0.001**

 24 h

3.3 ± 0.5

3.2 ± 0.5

3.4 ± 0.5

0.244

 36 h

3.2 ± 0.5

3.1 ± 0.4

3.1 ± 0.5

0.474

 48 h

2.7 ± 0.6

2.8 ± 0.4

2.9 ± 0.8

0.464

 60 h#

2.8 ± 0.6

2.6 ± 0.5

2.9 ± 0.3

0.170

 72 h#

2.1 ± 0.3

2.2 ± 0.4

2.3 ± 0.5

0.317

Morphine equivalents (mg)

 0-12 h

2.3 ± 5.4

1.9 ± 5.0

4.2 ± 7.7

0.191

 0-24 h

9.1 ± 13.3

9.6 ± 14.6

11.8 ± 15.7

0.688

 Total during hospitalisation

32.5 ± 47.2

32.1 ± 48.2

48.6 ± 57.8

0.270

  1. Values are the mean ± SD
  2. *From one-way analysis of variance or Kruskal-Wallis analysis for independent means for continuous variables amongst the three groups
  3. **Significant
  4. #25/26/23 patients in group A/B/C were in the hospital at 60 postoperative hours, and 24/26/23 patients in group A/B/C were in the hospital at 72 postoperative hours