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. 2021 Jan 4;21:2. doi: 10.1186/s12877-020-01929-6

Table 5.

Longitudinal comparisons of SF12v2, WOMAC, IPAQ, and Functional Assessments of all patients

Questionnaires and Functional Assessments Baseline Time point P valuea
6 months 12 months
SF12v2
 PCS 33.06 ± 8.55 38.96 ± 8.01 40.67 ± 7.93 < 0.01
 MCS 45.87 ± 9.70 47.04 ± 10.53 48.50 ± 10.19 0.46
WOMAC
 Total 42.27 ± 15.98 20.65 ± 15.24 16.65 ± 18.13 < 0.01
 Pain 8.67 ± 3.51 4.32 ± 3.20 3.73 ± 4.62 < 0.01
 Stiffness 3.48 ± 1.81 2.03 ± 1.70 1.77 ± 2.07 < 0.01
 Function 30.12 ± 11.96 14.26 ± 11.43 11.69 ± 12.86 < 0.01
 Percentage 44.03 ± 16.64 21.51 ± 15.87 17.35 ± 18.88 < 0.01
IPAQ
 Low 11 (21.6) 4 (12.1) 4 (9.5) 0.24
 Moderate 18 (35.3) 18 (54.5) 17 (40.5)
 High 22 (43.1) 11 (33.3) 21 (50.0)
Knee flexion/extension muscle strength
 Operated knee extension 12.56 ± 6.23 10.80 ± 4.99 15.53 ± 7.98 < 0.01
 Operated knee flexion 5.34 ± 2.92 4.61 ± 2.49 6.53 ± 3.85 0.03
 Non-operated knee extension 14.19 ± 7.61 14.07 ± 7.80 15.18 ± 8.36 0.79
 Non-operated knee flexion 5.55 ± 3.13 5.49 ± 2.48 6.74 ± 3.94 0.15
 Handgrip muscle strength 19.31 ± 5.92 18.98 ± 6.37 19.36 ± 7.66 0.97
 Six-meter gait speed test 10.24 ± 5.35 7.56 ± 2.14 7.69 ± 2.68 < 0.01

PCS physical component score, MCS mental component score, IPAQ International Physical Activity Questionnaires

a post-hoc Bonferroni log-rank test