A total dose of radiation therapy should be more than 50Gy

The EORTC QLQ-core 30 questionnaire is composed of multi-item scales and single-item measures including 5 functional scales, 3 symptom scales, a global health status-QoL scale, and 6 single items. Each of the multi-item scales includes a different set of items - no item occurs in more than 1 scale. High scale score=higher response level; a high score for a functional scale=a healthy level of function, high score for the global health status/QoL=high quality of life but a high score for a symptom scale / item=high level of symptomatology/problems. The principle for scoring these scales: 1.) Estimate the average of the items that contribute to the scale = raw score. 2.) Linear transformation to standardize the raw score, so that scores range from 0 to 100. Results should be interpreted with caution as the numbers of patients with available data over time were limited, and because of high variances as evidenced by large standard deviations.