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# Adolescent movement behaviours explained 2.0 points of a 6.9-point CVD risk gap
- URL: https://www.coios.me/adolescent-movement-behaviours-explained-2-0-points-of-a-6/
- Published: 2026-09-20T00:09:31.000Z
- Updated: 2026-09-20T00:42:04.000Z
- Description: In 6,608 US adolescents followed for over two decades, the 6.9 percentage-point gap in predicted 30-year cardiovascular risk by parental education fell to 4.9 points in a scenario removing all unhealthy physical activity, screen time and sleep, and the relative gap was unchanged.
- Author: Daniel Ryan
- Tags: Behavioural science, Diet and physical activity, Inequalities in health and length of life, United States, #peer-reviewed, #refines, #item, #source-2026-09

Using the Add Health cohort, the authors classified adolescents' physical activity, screen time and sleep against the 24-Hour Movement Guidelines and decomposed the socioeconomic gap in predicted 30-year cardiovascular risk measured in adulthood. Adolescents whose parents had not completed college had a 6.9 percentage-point higher risk (RR 1.73), and a hypothetical intervention removing all unhealthy movement behaviours reduced the absolute gap by 2.0 points, almost all of it through physical activity, while the relative gap was unchanged (RR 1.76). Giving the lower group the same distribution of behaviours as the higher group had minimal effect, and the outcome is a predicted risk score rather than observed events.

*Why it is interesting: Puts a size on how much of the socioeconomic gradient in cardiovascular risk adolescent behaviour could account for, which is under a third of the absolute gap and none of the relative one.*

Source

[American Journal of Epidemiology, 18 September 2026](https://doi.org/10.1093/aje/kwag234?ref=coios.me)

DOI

10.1093/aje/kwag234

Type

Peer-reviewed article

Design

Causal decomposition (g-formula) in the Add Health cohort, n=6,608, enrolled 1994-95 and followed to 2016-18

Verdict

Refines prior evidence

Driver

[Diet and physical activity](https://www.coios.me/d-diet-activity/)

Driver

[Inequalities in health and length of life](https://www.coios.me/d-health-inequality/)