Table 2.
Predictors of secondary outcome
| Variable |
p value univariate |
p value multivariate |
|---|---|---|
| Age | 0.237 | – |
| Sex | 0.912 | – |
| Preoperative headache intensity (NRS) | 0.595 | – |
| Headache ≤ 5 min in upright position | 0.616 | – |
| Visual disturbances | 0.386 | – |
| Auditory disturbances | 0.143 | 0.356 |
| Evolution into less intense/orthostatic headache | 0.296 | – |
| Symptom duration | < 0.001 | 0.001 |
| Lumbar opening pressure (cmH2O) | 0.253 | – |
| Preoperative epidural blood patch | 0.586 | – |
| Postoperative rebound hypertension | 0.945 | – |
| Classification of leak (type 1–4) | 0.597 | – |
NRS numeric rating scale
Secondary outcome was postoperative headache intensity rated on the NRS