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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
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