Fig. 3From: Phase II study of stereotactic body radiotherapy with hydrogel spacer for prostate cancer: acute toxicity and propensity score-matched comparisonComparison of acute gastrointestinal and genitourinary toxicity between the spacer group and the control group after propensity score-matching. Toxicity was graded according to the Common Terminology Criteria for Adverse Events (CTCAE) version 4Back to article page