" Not only do minorities get asthma at a higher rate, but [UCSF] pulmonologist Dr. Esteban Burchard ... has found that ethnicity is the most important factor in determining if a patient will respond to asthma therapy. Unfortunately, for the most most commonly prescribed asthma medication, Albuterol, 67 percent of Puerto Ricans and 47 percent of African-Americans show no improvement when taking it, yet Albuterol works…
Imagine two worlds:
World #1 (the horrible world): medical research neglects black people. They only bothered to develop an asthma treatment that works on white people.
World #2 (the reasonable world): medical research is careful to make sure they cover all groups. They developed several asthma drugs. None works well across all ethnic groups, but there is a good one available for each ethnic group.
In both of these worlds the most commonly prescribed asthma drug will be one that works on the vast majority of white people and does not work well on black people.
What they need to include to make the point they are trying to make is how the less commonly prescribed asthma drugs do on different ethnic groups.