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Table 2 Distribution and floor/ceiling effects of HAAS-I and other measures in subjects with total hip arthroplasty

From: Development of the Italian version of the High-Activity Arthroplasty Score (HAAS-I) following hip and knee total arthroplasty: cross-cultural adaptation, reliability, validity and sensitivity to change

Outcome measures

Test mean (SD)

Re-test mean (SD)

Floor/ceiling effects (%)

HAAS

10.50 (3.62)

10.52 (3.42)

0/0 (0%,0%)

WOMAC

17.49 (22.40)

n.a.

10/0 (15%,0%)

WOMAC Pain

14.68 (20.81)

n.a.

21/0 (31%,0%)

WOMAC Stiffness

19.22 (25.41)

n.a.

32/0 (48%,0%)

WOMAC ADL

17.91 (22.91)

n.a.

11/0 (16%,0%)

NRS

2.01 (1.86)

n.a.

1/0 (2%,0%)

SF-36 Physical Function

67.23 (29.14)

n.a.

0/10 (0%,15%)

SF-36 Physical Role

46.30 (44.22)

n.a.

27/22 (40%,33%)

SF-36 Bodily Pain

62.06 (30.00)

n.a.

3/17 (5%,25%)

SF-36 General health

32.23 (16.90)

n.a.

0/0 (0%,0%)

SF-36 Vitality

59.86 (17.42)

n.a.

0/0 (0%,0%)

SF-36 Social function

72.38 (23.80)

n.a.

0/12 (0%,18%)

SF-36 Emotional Role

65.17 (45.48)

n.a.

20/40 (30%,60%)

SF-36 Mental Health

67.00 (21.26)

n.a.

0/4 (0%,6%)

  1. n.a. not available, SD standard deviation, ICC intraclass correlation coefficient, CI confidence interval, HAAS-I High-Activity Arthroplasty Score (Italian version), NRS numerical rating scale, WOMAC Western Ontario and McMaster University index, SF-36 Short Form Health Survey 36 items