Yimsaard P, McNeill A, Yong HH, et al. - Researchers explored sex variations in reasons for vaping and features of electronic cigarettes (ECs) used, like device type, device capacity, e-liquid nicotine strength, and flavor. They examined data from 3,938 adults (18+ years) using EC at least weekly who participated in Wave 2 (2018) of the ITC Four Country Smoking and Vaping Survey in Canada, the United States, England, and Australia. In females, "less harmful to others" (85.8%) was the most frequently cited reason for vaping, while in males less harmful than cigarettes" (85.5%) was. Females were more likely to cite "less harmful to others" and "help cut down on cigarettes" than males. Females were less likely to report using e-liquids containing >20 mg/ml of nicotine, and tank devices with >2ml capacity vs males. There was no significant gender difference in use of flavored e-liquids; fruit was the most common flavor for both males (54.5%) and females (50.2%). It was indicated that monitoring of gender variations in patterns of EC use would be beneficial to inform outreach activities and interventions for EC use.