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Table 3: 
Possible clinical outcome predictors for interlaminar ESI in terms of the NASS patient-satisfaction indexa
NASS 1 or 2 (n = 44)NASS 3 or 4 (n = 24)P Value
Ageb49.1 ± 15.050.8 ± 12.3.734
Sex
    Male6 (46.2%)7 (53.8%).195
    Female38 (69.1%)17 (30.9%)
Duration of LBP
    <3 Months22 (62.9%)13 (37.1%).803
    >3 Months22 (66.7%)11 (45.8%)
  • a Data are number of patients. The NASS patient-satisfaction index was obtained in 66 patients.
  • b Mean age (years).