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Percentage reduction and mean difference in percentage reduction of inflammatory lesion (IL) counts from baseline between the benzoyl peroxide (BPO) and the vehicle groups. Data indicate the mean (●, BPO; ○, vehicle), the standard deviation (†), the standard error (‡), the median (■, BPO; □, vehicle), the median and interquartile range (gray box, BPO; white box, vehicle), or the mean difference (♦, BPO minus vehicle).
