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Table 2 Comparison of PLPH Frequencies in the 4 Hours and 1 Hour Supine Recumbence Groups

From: No effect of recumbency duration on the occurrence of post-lumbar puncture headache with a 22G cutting needle

  4 hours supine recumbence (n = 35) 1 hour supine recumbence (n = 35) P Value
  n(%) or Median(range) n(%) or Median(range)  
PLPH    
   Yes 10 (28.6%) 12 (34.3%) 0.607
   No 25 (71.4%) 23 (65.7%)  
Onset time of PLPH (hour) 4.5 (range, 4-120) 20 (range, 1-56) 0.582
Severity of PLPH (NRS) 3 (range, 1-10) 2 (range, 1-9) 0.203
Duration of PLPH (hour) 28 (range, 8-88) 12 (range, 8-72) 0.521
  1. PLPH = Post Lumbar Puncture Headache; NRS = Numeric Rating Scale