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Table 1 Demographics, clinical features, and EBP response rate in SIH and PDPH patients

From: Comparisons of clinical characteristics, brain MRI findings, and responses to epidural blood patch between spontaneous intracranial hypotension and post-dural puncture headache: retrospective study

Variables SIH (n = 61) PDPH (n = 44) p-value
Age (years) 40 (33–51) 38 (29.5–53) 0.471
Gender    0.615
Male 24 (39.3%) 21 (47.7%)  
Female 37 (40.7%) 23 (52.3%)  
Symptom onset-diagnosis interval (days) 10 (6–15) 4 (3–10.5) < 0.01
Time to occur a headache after sitting (minutes) 5 (1–10) 8 (4–10) 0.518
Headache intensity (0–10) 7 (5–9) 7 (6–8) 0.651
Associated phenomena    
Nausea 32 (52.5%) 19 (43.2%) 0.317
Vomiting 15 (24.6%) 6 (13.6%) 0.240
Auditory symptoms 12 (19.7%) 3 (6.8%) 0.060
Dizziness 5 (8.2%) 3 (6.8%) 0.661
CSF opening pressure (cmH2O) 5.5 (3–8) (n = 40) 6.5 (4–9) (n = 22) 0.188
Hospitalization period (days) 7 (5–9.25) 6 (4–8.5) 0.087
Treatment    0.015
Conservative management 18 (29.5%) 24 (54.5%)  
EBP once 20 (32.8%) 14 (31.8%)  
EBP twice 17 (27.9%) 2 (4.5%)  
EBP three times 3 (4.9%) 4 (9%)  
EBP four times 3 (4.9%) 0 (0%)  
  1. spontaneous intracranial hypotension (SIH); post-dural puncture headache (PDPH); cerebrospinal fluid (CSF); epidural blood patch (EBP)
  2. Values are presented as the number of patients (%) or median (IQR)