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Table 1 Patient characteristics and mean total scores on questionnaires for the reliability and validity study.

From: Reliability and concurrent validity of the Dutch hip and knee replacement expectations surveys

  Reliability study Validity study
  Hip Knee Hip Knee
N 72 46 86 57
Female (N, %) 56 (77.8) 24 (52.2) 63 (73.3) 32 (56.1)
Age in years (mean, SD) 67.5 (9.7) 69.9 (8.2) 67.7 (10.4) 69.6 (8.2)
BMI in kg/m2 (mean, SD) 25.9 (4.0) 27.7 (4.6) 26.1 (5.4) 28.6 (5.1)
Living situation     
   Living alone (N, %) 20 (27.8) 14 (30.4) 22 (25.6) 17 (29.8)
   Living with partner and/or children (N, %) 52 (72.2) 32 (69.6) 64 (74.4) 40 (70.2)
Highest educational level     
   Primary school (N, %) 21 (29.2) 24 (52.2) 27 (31.4) 31 (54.4)
   Higher education (N, %) 51 (70.8) 22 (47.8) 59 (68.6) 26 (45.6)
Operation performed in:     
   University Medical Center (N, %) 13 (18.1) 7 (15.2) 20 (23.3) 9 (15.8)
   General hospital (N, %) 59 (81.9) 39 (84.8) 66 (76.7) 48 (84.2)
Expectation Score A (mean, SD) 66.8 (18.0) 60.4 (20.3) 65.5 (19.8) 61.3 (20.5)
Expectation Score B (mean, SD) 67.3 (19.8) 61.8 (20.8) NA NA
Expectation WOMAC Score (mean, SD) NA NA 81.1 (15.8) 78.2 (16.6)
  1. NOTE. BMI: Body Mass Index; Expectation Score A: score from first assessment of the Dutch Hip/Knee Replacement Expectations Survey; Expectation Score B: score from second assessment of the Dutch Hip/Knee Replacement Expectations Survey.