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Table 2 Changes in WOMAC scores of the participants between preoperative measurement and following hip arthroplasty (n = 265)

From: Identification of patients with suboptimal results after hip arthroplasty: development of a preliminary prediction algorithm

 

Mean preoperative scorea (SD)

Mean preoperative scorea (SD)

Change in scoreb (SD)

95 % CI

Comparison between time points (p value)

WOMAC

     

 Pain

55.4 (19.2)

10.5 (16.7)

- 44.9 (22.6)

- 42.1 to–47.6

<0.001*

 Stiffness

57.1 (19.4)

12.5 (18.1)

- 44.6 (25.1)

- 41.6 to–47.7

<0.001*

 Function

53.2 (20.0)

9.6 (15.3)

- 43.6 (21.9)

- 40.9 to–46.2

<0.001*

 Total score

54.0 (18.7)

10.1 (15.1)

- 43.9 (21.1)

- 41.4 to–46.5

<0.001*

  1. SD standard deviation
  2. CI confidence interval
  3. aScores presented as standardized scores. Lower scores sign a better condition. Scores were measured on the day of the surgery
  4. bNegative changes in score indicate an improvement of the condition. Scores were measured on a mean of 446 ± 171 days following the intervention
  5. *p < 0.05