marginally insignificantP = 0.052
In patients with available myelographic images, the association between repeated EBPs and the presence of leakage sites became marginally insignificant (OR, 1.84; 95% CI, 0.99–3.41; P = 0.052), but the association remained significant for leakage sites at the thoracic spine (OR, 2.21; 95% CI, 1.15–4.23; P = 0.022).