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. 2020 Mar 19;93(1108):20190789. doi: 10.1259/bjr.20190789

Table 5.

Association between relative dose and relative volume

Spearman rank correlation p-value
Rectum volume (%)
 1 0.364 p < 0.0001
 5 0.088 p = 0.21
 10 −0.087 p = 0.22
 35 −0.460 p < 0.0001
Bladder volume (%)
 1 −0.245 p = 0.0004

Correlation shows if there is association between relative dose (relative to planning) and relative volume (relative to planning volume).