Forty percent of all ESIs were associated with diagnosis codes for sciatica, radiculopathy, or herniated disc, whereas axial low back pain diagnoses accounted for 36%, and spinal stenosis for 23%.

• 在所有接受硬膜外注射的案例中，有40%25与坐骨神经痛、神经根痛以及椎间盘突出相关，同时诊断为轴性的腰背痛占36%25，椎管狭窄占23%25。