How would you then explain all the double-blind clinical trials that demonstrated the majority of patients on Finasteride (a popular DHT inhibitor) slowed down,

How would you then explain all the double-blind clinical trials that demonstrated the majority of patients on Finasteride (a popular DHT inhibitor) slowed down, or slightly reversed, their hair loss, compared with the patients who were on placebo? (please Google for the studies and data, I don't have links ready but have reviewed them in the past, there are tons by different groups of researchers across many countries)