$3$b$.$ the short$-$term efficacy: Reduction in cancer Index during the first days of treatment $[$Of note, you can change the subtitle, but should include the right information$]$

Reduction in cancer index was regarded to present the short$-$term efficacy of the new drug. You should compare the reductions of two drugs here. Again, instead of saying that the difference between this two groups is or is not statistically significant, you could provide the mean$/$sd values of the Index$10-$Index$0$ for each group. You could also talk about whether there is any difference between these two groups at the baseline index $($Index$0),$ which helps you interpret the data.

While the comparisons between treatment groups in cancer index are required, you could expand your analyses as you like $($as long as it$$s reasonable and statistically right$).$ For example, you may check any potential correlation between the cancer index reduction and age $($whether old patients had bigger or smaller reduction in cancer index$)$ upon treatment, between cancer index reduction and gender, etc.$).$ I am not going to limit your options but if you use some advanced statistical procedures, such as generalized linear regression, you should provide such information in $$Statistical Analysis$$ section and in your test here.