Table 2. The effect of early menarche on the sexual behaviors from the Korea Youth Risk Behavior Web-based survey (2012).

Values are presented as number (%).

OR, odds ratio; CI, confidence interval.

^a)Odds ratio (adjusted for sociodemographic variables of paternal educational level, maternal educational level, living with both parents, academic performance and household income) for early menarche group for event compared with normal menarche group.