Associations Among Childhood Household Income, Latent Classes of Early Adverse Childhood Experiences, and Adolescent Mental Health.

The analytic sample was 2,524 adolescents, not the original birth cohort of about 5,000, and by age 15 about 73.4% of the original sample remained; adolescents followed to age 15 differed from the original sample in several maternal and family characteristics. The original cohort oversampled unmarried mothers and included many low-income and racial/ethnic minority families, so it is not a representative general population sample. Adversity information was parent-reported when children were 1, 3, and 5 years old, and some harsh discipline, abuse, and neglect items were only assessed if a parent took an in-home survey, so under-reporting and missingness are possible. The study did not include sexual abuse or parental separation/divorce in the ACE list. ACEs were collapsed into yes/no exposure across early childhood, so severity, frequency, and exact timing were not examined. Household income was measured only at birth, and the study did not formally test whether income or ACE class mediated adolescent symptoms. Class membership was estimated from statistical patterns, not from a clinical diagnosis, so it should not be read as a precise individual label.

The authors declared no relevant financial or non-financial interests to disclose.

Do not conclude that physical or emotional abuse in early childhood has little mental health impact because that group had symptoms similar to the Low ACEs group. This was an observational latent class analysis, not a tested intervention, and the Physical/Emotional Abuse group also had higher household income at birth, so the study cannot separate the effects of abuse, income, and other unmeasured factors.