Fig. 1: Path diagrams for latent growth curve models. | Pediatric Research

Fig. 1: Path diagrams for latent growth curve models.

From: Four-year longitudinal associations of physical activity, waist circumference, and blood pressure in UK adolescents

Fig. 1

Path diagrams for a basic latent growth curve model and b adjusted latent growth curve model. I and L are both latent variables derived from the observed variables for (in this case) systolic blood pressure (SBP) measured at three time points. Baseline measures affect both the intercept and slope of the growth models, whereas change in waist circumference and physical activity only affect the slope of the growth models. I = intercept, L = latent growth curve slope; SBP 1 = Grade 7; SBP 2 = Grade 9; SBP 3 = Grade 11; S.1 = sex; IMD = Index of Multiple Deprivation; PA = physical activity, WC = waist circumference, PAd. = difference (change) in physical activity over 4 years; WCd. = -difference (change) in waist circumference over 4 years.

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