Figure 2

Tumor motion amplitudes and variability of prediction for men and women. We observed no significant difference between men and women regarding tumor motion amplitudes in all three directions: SI p = 0.056 (A); LL p = 0.549 (B); and AP p = 0.052 (C). Variability of prediction for the SI direction (D), men: y = 2.2008 + 0.7015*x; r = 0.7285; p = 0.0000; and women: y = 9.4583 + 0.1804*x; r = 0.2695; p = 0.0163. Test for difference between two correlation coefficients, p = 0.0000. Test for difference between two regression coefficients, p = 0.0001. LL direction (E), men: y = 1.7543 + 0.4717*x; r = 0.4572; p = 0.000; and women: y = 4.6229-0.2843*x; r = -0.2505; p = 0.026. Test for difference between two correlation coefficients, p = 0.0000. Test for difference between two regression coefficients, p = 0.0001. AP direction (F), men: y = 1.8117 + 0.346*x; r = 0.4538; p = 0.0000; and women: y = 2.7144 + 0.261*x; r = 0.1993; p = 0.0802. Test for difference between two correlation coefficients, p = 0.07. Test for difference between two regression coefficients, p = 0.57.