Table 4.
Floor and ceiling effects for SF-36 subscale scores for the study groups at first and final follow-up*
| SF-36 scores | Total hip replacement (controls) |
Total hip replacement (patients) |
Total knee replacement |
Arthroscopic partial meniscectomy |
Anterior cruciate ligament reconstruction |
||||||
| % scoring 0 |
% scoring 100 |
% scoring 0 |
% scoring 100 |
% scoring 0 |
% scoring 100 |
% scoring 0 |
% scoring 100 |
% scoring 0 |
% scoring 100 |
||
| PF | Baseline | - | 12.0 | 8.3 | - | 1.4 | - | 1.6 | 0.0 | 2.2 | - |
| First follow-up | - | 13.6 | 1.3 | 0.7 | - | 1.4 | - | 6.3 | - | 4.3 | |
| Final follow-up | 2.2 | 8.7 | 3.9 | - | 2.7 | - | - | 28.3 | |||
| RP | Baseline | 19.6 | 54.3 | 80.8 | 2.0 | 70.4 | 2.8 | 39.7 | 19.0 | 76.1 | - |
| First follow-up | 21.4 | 61.9 | 35.3 | 31.7 | 40.8 | 26.8 | 20.6 | 50.8 | 19.6 | 45.7 | |
| Final follow-up | 26.2 | 42.9 | 35.3 | 35.3 | 38.0 | 19.4 | 10.9 | 71.7 | |||
| BP | Baseline | - | 40.0 | 9.0 | 1.3 | 8.3 | 1.4 | - | 1.6 | - | 2.2 |
| First follow-up | - | 36.0 | 0.6 | 27.1 | - | 26.4 | - | 12.7 | - | 21.7 | |
| Final follow-up | 2.0 | 38.0 | 0.6 | 25.8 | - | 19.4 | 2.2 | 41.3 | |||
| GH | Baseline | - | 8.7 | - | 4.3 | - | 1.5 | - | 16.1 | - | 8.7 |
| First follow-up | - | 13.0 | 0.7 | 5.7 | - | 8.8 | - | 27.4 | - | 13.0 | |
| Final follow-up | - | 6.5 | 1.4 | 4.3 | - | 8.8 | - | 21.7 | |||
| VT | Baseline | - | 4.4 | 2.2 | 0.7 | 3.0 | 4.5 | - | 3.2 | - | - |
| First follow-up | - | 11.1 | 0.7 | 5.1 | - | 7.6 | - | 7.9 | - | 13.0 | |
| Final follow-up | 2.2 | 4.4 | 0.7 | 4.4 | 3.0 | 4.5 | - | 6.5 | |||
| SF | Baseline | - | 64.0 | 3.2 | 17.7 | - | 22.5 | - | 52.4 | 2.2 | 32.6 |
| First follow-up | - | 53.1 | 0.6 | 60.8 | - | 57.7 | - | 68.3 | - | 67.4 | |
| Final follow-up | 2.0 | 52.0 | 1.9 | 55.7 | 2.8 | 53.5 | - | 84.8 | |||
| RE | Baseline | 10.8 | 59.5 | 47.5 | 30.2 | 46.9 | 28.1 | 14.3 | 54.0 | 30.4 | 41.3 |
| First follow-up | 13.5 | 67.6 | 17.3 | 55.4 | 28.1 | 53.1 | 12.7 | 68.3 | 15.2 | 76.1 | |
| Final follow-up | 18.9 | 75.7 | 23.0 | 54.0 | 26.6 | 43.8 | - | 84.8 | |||
| MH | Baseline | - | 20.0 | - | 6.6 | - | 12.1 | - | 9.5 | - | - |
| First follow-up | - | 15.6 | 0.7 | 24.1 | - | 21.2 | - | 22.2 | - | 21.7 | |
| Final follow-up | - | 13.3 | - | 19.0 | - | 16.7 | - | 15.2 | |||
*Note: First follow-up was three months for APM and six months for THR, TKR, and ACL groups; Final follow-up was five years for THR and TKR groups and two years for ACL.
PF = Physical Functioning, RP = Role Physical, BP = Bodily Pain, GH = General Health, VT = Vitality, SF = Social Functioning, RE = Role Emotional, MH = Mental Health.
Values indicating floor (15% or more with a score of 0) and ceiling (15% or more with a score of 100) effects are bolded.