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Table 4: 
Possible MR imaging outcome predictors for interlaminar ESI in terms of the NASS patient-satisfaction scalea
NASS 1 or 2 (n = 37)NASS 3 or 4 (n = 19)P Value
Central HIZ or HIVD
    Present28 (66.7%)14 (33.3%)1.000
    Absent9 (64.3%)5 (35.7%)
Schmorl nodes
    Present5 (71.4%)2 (28.6%)1.000
    Absent32 (65.3%)17 (34.7%)
Modic type 1
    Present1 (50%)1 (50%)1.000
    Absent36 (66.7%)18 (33.3%)
Facet arthropathy
    Present9 (24.3%)7 (36.8%).362
    Absent28 (75.7%)12 (63.2%)
  • a Data are number of patients. Both the NASS patient-satisfaction index and MR imaging were available in 56 patients.