Treatment Response Across the Different Patient Categories
| Variable | Response | P Value | ||
|---|---|---|---|---|
| Minimal (n = 104) | Moderate (n = 130) | Significant (n = 328) | ||
| Sex | .38 | |||
| Female | 81 (19) | 92 (22) | 250 (59) | |
| Male | 23 (17) | 38 (27) | 78 (56) | |
| Age (years) | .03 | |||
| <65 | 49 (15) | 78 (24) | 202 (61) | |
| ≥65 | 55 (24) | 52 (22) | 126 (54) | |
| Previous treatment | .52 | |||
| Medications | 62 (19) | 71 (22) | 190 (59) | |
| Acupuncture/physical therapy | 0 (0) | 0 (0) | 1 (100) | |
| Combination treatment* | 33 (17) | 53 (27) | 108 (56) | |
| No treatment | 9 (20) | 6 (14) | 29 (66) | |
| Previous treatment | .30 | |||
| None | 9 (20) | 6 (14) | 29 (66) | |
| Medications and combination treatment* | 95 (18) | 124 (24) | 299 (58) | |
| Anesthetic | ||||
| Concentration | .92 | |||
| 0.25% Bupivacaine | 28 (20) | 33 (24) | 77 (56) | |
| 0.5% Bupivacaine | 67 (18) | 86 (23) | 216 (59) | |
| 1% Lidocaine | 2 (10) | 4 (20) | 14 (70) | |
| Combination anesthetic | 7 (20) | 7 (20) | 21 (60) | |
| Dose (milliliters) | .86 | |||
| 0.25% bupivacaine | 1.58 ± 2.84 | 1.45 ± 2.82 | 1.56 ± 3.10 | |
| 0.5% bupivacaine | 1.68 ± 1.21 | 1.76 ± 1.20 | 1.74 ± 1.18 | |
| 1% lidocaine | 1.0 ± 3.9 | 1.3 ± 1.9 | 1.7 ± 1.3 | |
| No. of GON block procedures | <.001 | |||
| 1 | 79 (35) | 67 (29) | 82 (36) | |
| ≥2 | 25 (7) | 63 (19) | 246 (74) | |
| Use % lidocaine | .77 | |||
| No | 95 (19) | 119 (23) | 294 (58) | |
| Yes | 9 (17) | 11 (20) | 34 (63) | |
Data are no. (%) unless otherwise indicated.
↵* Combination treatment refers to the use of both medications (acute and prophylactic) in addition to other therapies (e.g., botulinum toxin, acupuncture, physical therapy).
P < .05 was considered significant (in bold).
GON, greater occipital nerve.