Needle size used PDPH % of patients with PDPH
Yes No
18G 7 4 63.60%
20G 24 25 49%
22G 9 20 31%
24G 4 11 26.60%
<24G (25,26&27) 1 11 8.30%
Table 3: percentage of PDPH developed when specific needle sizes were used among the study participants of GUH who developed PDPH, February 25-April 10, 2013.