Table 4.
Headache Days
| Bupivacaine | Saline | Effect Size | |||
|---|---|---|---|---|---|
| n | M (SD) | n | M (SD) | d | |
| Baseline | 25 | 23.15 (5.12) | 11 | 24.75 (4.35) | .33 |
| Treatment | 25 | 19.27 (8.39) | 11 | 24.17 (5.89) | .63 |
| 1 Month post‐treatment | 25 | 17.44 (9.08) | 11 | 22.82 (5.36) | .66 |
SD, standard deviation.
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