With no explanation, label text_A→text_B with either "no" or "yes".
text_A: Method 1: We look at how having a brother correlates with smallpox survival case by case according to vaccination reaction. Method 2: We look directly at how having a brother correlates with smallpox survival in general.
text_B: To understand how having a brother affects smallpox survival, is it more correct to use the Method 1 than Method 2?
no.