Table 5 Comparisons of binarized treatment parameters for the probability of maintaining pain relief

Volume (< 30 vs. ≥ 30 mm³)

205 vs. 91

χ² = 4.675, p = 0.031

Integral dose (< 1.4, 1.4–2.7, > 2.7 mJ)

114 vs. 144 vs. 39

low vs. intermediate: χ² = 5.020, p = 0.019

low vs. high: χ² = 6.026, p = 0.014

intermediate vs. high, χ² = 0.221, p = 0.638

D_mean (< 63 vs. ≥ 63 Gy)

75 vs. 221

χ² = 1.803, p = 0.179

D_max (< 72 vs. ≥ 72 Gy)

132 vs. 164

χ² = 2.756, p = 0.097

Prescriptin dose (< 58 vs. ≥ 58 Gy)

130 vs. 166

χ² = 0.440, p = 0.838