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Fig. 4 | BMC Medical Research Methodology

Fig. 4

From: Using linear and natural cubic splines, SITAR, and latent trajectory models to characterise nonlinear longitudinal growth trajectories in cohort studies

Fig. 4

Mean BMC growth trajectory (left panels) and mean BMC growth velocity and age at peak velocity (right panels) from the selected natural cubic spline LME models. Figure shows the estimated mean BMC trajectory (a, c, e) and mean BMC growth velocity (b, d, f) in females (black) and males (red) from natural cubic spline LME models in ALSPAC (a, b), BMDCS (c, d), and PBMAS (e, f). The vertical lines in subplots b, d, f represent the mean age at peak velocity. Shaded areas around the mean growth trajectories represent 95% confidence intervals

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