NRS pre- and post-injection
NRS | IAI | PENG | |||||||
---|---|---|---|---|---|---|---|---|---|
Mean score (95% CI) | Mean difference | Cohen’s d | Mean score (95% CI) | Mean difference | Cohen’s d | Group comparison | |||
Pre-treatment | 6.96 ± 0.99 (6.59–7.34) |
7.18 ± 1.06 (6.71–7.48) |
0.618 | ||||||
Day 1 | 4.80 ± 0.99 (4.44–5.16) |
–2.16 | 2.18 | 2.57 ± 0.93 (2.22–2.91) |
–4.61 | 4.62 | < 0.001 | ||
Week 1 | 2.56 ± 0.62 (2.33–2.79) |
–4.40 | 5.32 | 2.73 ± 0.64 (2.50–2.96) |
–4.45 | 5.08 | 0.312 | ||
Week 4 | 2.60 ± 0.67 (2.35–2.85) |
–4.36 | 5.15 | 3.50 ± 1.00 (3.13–3.87) |
–3.68 | 3.57 | < 0.001 | ||
Week 8 | 3.10 ± 0.78 (2.99–3.21) |
–3.86 | 4.33 | 4.80 ± 1.03 (4.42–5.18) |
–2.38 | 2.27 | < 0.001 |
Values are presented as mean ± standard deviation.
Cohen’s d effect size: small effect (< 0.2), moderate effect (0.2–0.8), large effect (> 0.8).
NRS: numerical rating scale, CI: confidence interval, IAI: intra-articular injection, PENG: pericapsular nerve group.