Table 5 Comparisons of binarized treatment parameters for the probability of maintaining pain relief
| Variables | n | Chi2 and P-values |
|---|---|---|
| Pain | ||
| 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 |
| Dmean (< 63 vs. ≥ 63 Gy) | 75 vs. 221 | χ2 = 1.803, p = 0.179 |
| Dmax (< 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 |