“…The timing of EBP in the present study, with a median of 96 hours, was longer than suggested [16,17] and reported [18]. However, the optimal timing has not been established, but there are studies that suggest that EBPs performed 48 hours or later after LP could be more efficacious than early EBP [2,4,9,19]. The spontaneous recovery rate of PDPH may be high when small-gauge pencil-point needles are used for LP.…”