Double-Blinded, Vehicle-Controlled Proof of Concept Study to Investigate the Recurrence of Inflammatory and Noninflammatory Acne Lesions Using Tretinoin Gel (Microsphere) 0.04% in Male Patients after Oral Isotretinoin Use

Table 5

Patient demographics.

Characteristic	Active	Vehicle
Number of subjects (𝑛)	10	10
Gender	100% male	100% male
Mean age (range)	21 years old (18–29)	22.4 years old (18–42)
Race	90% Caucasian	80% Caucasian
Duration of acne (range)	5.2 yrs (1–14)	5.6 yrs (2–11)