I believe the correct answer is: than children who live with the single parent.
According to the study cited by the United States Census Bureau, children who live with married parents grow up with more advantages than children who live with a single parent. The research shows that family structure has a great impact on the well-being of children. It is found that children living with both of their parents (biologically, married) consistently have better physical, emotional, and academic well-being than children who live with a single parent. The society also has a role in this, as the society shows more support to marriage.