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Table 1 Demographic and Clinical Characteristics of the subjects

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 Mean ± SD n(%) or Mean ± SD  
Sex, Female 14 (40%) 13 (37.2%) 0.806
Age (year) 51.4 ± 13.9 52.9 ± 13.8 0.644
Drainage amount (mL) 24.9 ± 11.0 22.8 ± 8.6 0.368
Opening pressure (cm H20) 12.5 ± 4.3 13.5 ± 6.6 0.448
Closing pressure (cm H20) 10.4 ± 5.7 10.4 ± 5.1 0.986
Experience of LP    
   Yes 14 (40%) 11 (31.4%)  
   No 21 (60%) 24 (68.6%) 0.509
Experience of PLPH    
   Yes 4 (23.5%) 2 (20%)  
   No 13 (76.5%) 8 (80%) 0.831
Physician    
   Intern 1 (3%) 2 (6%)  
   First-year Resident 33 (97%) 28 (85%) 0.138
   Second-year Resident 0 3 (9%)  
LP attempts    
   1 27 (77.1%) 25 (71.5%)  
   2 4 (11.4%) 5 (14.2%)  
   3 3 (8.6%) 4 (11.4%) 0.805
   4 1 (2.9%) 0  
   7 0 1 (2.9%)  
Leukocytosis in CSF (WBC > 5 mm3) 7 (20%) 7 (20%) 1.000
Treatment using analgesics after PLPH    
   No use 4 (40%) 7 (58.3%)  
   Non-opioids added 2 (20%) 1 (8.3%) 0.613
   Non-opioids maintained 4 (40%) 4 (33.3%)  
  1. LP = lumbar Puncture; PLPH = Post Lumbar Puncture Headache