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Correlation Matrix for Expectancy
| Measure | Headache improvement | Acupuncture effectiveness | HIT | NRS: Pain Usual | NRS: Pain Now | NRS: Pain Best | NRS: Pain Worst | PSQI |
|---|---|---|---|---|---|---|---|---|
| Headache improvement | − | 0.679§ | −0.289 | −0.464* | −0.223 | −0.164 | −0.217 | −0.470* |
| Acupuncture effectiveness | 0.679* | − | −0.067 | −0.422* | −0.261 | −0.365 | −0.193 | −0.498* |
P < 0.05.
HIT, Headache Impact Test; NRS, Numerical Rating Scale; PSQI, Pittsburgh Sleep Quality Index.
