Sampling bias due to consent procedures with adolescents

Area of Science:

• Adolescent Health
• Behavioral Science
• Public Health Research

Background:

• Adolescent substance use is a significant public health concern.
• Research on adolescent drug use often relies on self-reported data and parental consent.
• Potential biases introduced by parental consent requirements are not fully understood.

Purpose of the Study:

• To investigate the impact of parental consent on the accuracy of self-reported adolescent substance use.
• To compare the behaviors of students who provided parental consent versus those who did not.
• To assess potential biases in adolescent drug use research stemming from consent procedures.

Main Methods:

• Surveyed 604 seventh-grade students across four middle schools.
• Utilized a "bogus pipeline" approach with physiological samples for a subset of consenting students.
• Administered two questionnaires, one with and one without physiological measures, to assess differences between consent and non-consent groups.

Main Results:

• Students who provided consent differed significantly in cigarette and marijuana smoking compared to non-consenting students.
• No significant differences were observed in alcohol use between the two groups.
• Differences were also noted in exposure to smoking models and parental education levels.

Conclusions:

• Positive parental consent may introduce bias into adolescent substance use studies.
• Findings suggest that reliance on parental consent can affect the generalizability of research on adolescent drug and tobacco use.
• Researchers should consider consent bias when designing and interpreting studies on adolescent behaviors.