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Injection sites and incidence of post-injection dizziness or vertigo.
| Injection site (quadrant) | Transient dizzy rate | Post-injection vertigo rate |
|---|---|---|
| Q1 | 8/35 (22.9%) | 0/35 (0%) |
| Q2 | 20/120 (16.7%) | 0/120 (0%) |
| Q3 | 13/92 (14.1%) | 3/92 (3.3%) |
| Q4 | 6/31 (19.4%) | 2/31 (6.5%) |
Q1, anterior-superior quadrant; Q2, anterior-inferior quadrant; Q3, posterior-inferior quadrant, and Q4, posterior-superior quadrant.
