Secondary outcome measures per detection time point
Variable | IAI | PENG | |||||||
---|---|---|---|---|---|---|---|---|---|
Mean score (95% CI) |
Mean difference | Cohen’s d | Mean score (95% CI) |
Mean difference | Cohen’s d | Group comparison | |||
WOMAC | |||||||||
Pre-treatment | 51.73 ± 9.09 (48.41–55.06) |
49.00 ± 8.12 (46.03–51.97) |
0.225 | ||||||
Week 4 | 42.53 ± 10.93 (38.54–46.53) |
–9.20 | 0.91 | 42.30 ± 9.13 (38.96–45.64) |
–6.70 | 0.77 | 0.929 | ||
Week 8 | 41.70 ± 10.35 (38.04–45.60) |
–10.03 | 1.02 | 46.93 ± 8.39 (44.13–50.30) |
–2.07 | 0.25 | 0.036 | ||
HHS | |||||||||
Pre-treatment | 50.00 ± 6.96 (47.46–52.54) |
48.90 ± 8.11 (45.94–51.86) |
0.557 | ||||||
Week 4 | 70.83 ± 8.71 (67.64–74.01) |
+20.83 | 2.51 | 66.13 ± 7.94 (62.67–68.52) |
17.23 | 2.14 | 0.021 | ||
Week 8 | 67.65 ± 8.35 (64.21–70.12) |
+17.65 | 2.16 | 61.40 ± 7.60 (58.62–64.18) |
12.50 | 1.59 | 0.007 | ||
QAQ score | |||||||||
Pre-treatment | 3.90 ± 0.92 (3.56–4.23) |
3.53 ± 1.13 (3.11–3.94) |
0.175 | ||||||
Week 8 | 1.73 ± 1.20 (1.29–2.17) |
–2.17 | 2.02 | 1.53 ± 1.07 (1.14–1.92) |
–2.00 | 1.81 | 0.499 | ||
Patient satisfaction | 4.26 ± 0.86 | 3.90 ± 0.99 | 0.138 |
Values are presented as mean ± standard deviation.
Cohen’s d effect size: < 0.2 = small effect, 0.2–0.8 = moderate effect, > 0.8 = large effect.
IAI: intra-articular injection, PENG: pericapsular nerve group, CI: confidence interval, WOMAC: Western Ontario and McMaster University Osteoarthritis Index, HHS: Harris Hip Score, QAQ: quantitative analgesic questionnaire.