With no explanation, label text_A→text_B with either "no" or "yes".
text_A: Method 1: We look at how maternal smoking status correlates with infant's birth weight case by case according to unobserved confounders. Method 2: We look directly at how maternal smoking status correlates with infant's birth weight in general.
text_B: To understand how maternal smoking status affects infant's birth weight, is it more correct to use the Method 1 than Method 2?
yes.