求助审稿人的一句提问！

Table 6 & 7: Since different radiotherapy treatment modalities are associated with different incidence of malnutrition and weight loss (Table 6), how the study was able to control for the contribution of chemotherapy (Table 7) to post- radiotherapy weight loss?
搞不太明白审稿人对different radiotherapy treatment modalities 的分析有意见还是对chemotherapy 的对体重减轻的结果有疑问。