Change the following sentence into the active voice; also revise the sentence for clarity and brevity: The validity of self-report of raised nevi over the telephone was evaluated in comparison to dermatological examination among a sub-sample of 25 subjects from the total sample of 100.
The validity of raised nevi self-reporters over the telephone, in comparison to dermatological exam, amounted to a sub-sample of 25 subjects from the total, 100.
