In this subchapter:
(1) “Home visiting program” means a voluntary-enrollment program in which early childhood and health professionals such as nurses, social workers, or trained and supervised paraprofessionals repeatedly visit over a period of at least six months the homes of pregnant women or families with children under the age of six who are born with or exposed to one or more risk factors.
(2) “Risk factors” means factors that make a child more likely to experience adverse experiences leading to negative consequences, including preterm birth, poverty, low parental education, having a teenaged mother or father, poor maternal health, and parental underemployment or unemployment.