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. 2020 Mar 5;35(3):205–222. doi: 10.1007/s10654-020-00615-6

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© The Author(s) 2020

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Fig. 1 — Graphical representation of alternative longitudinal models: a mixed effects model; b growth mixture model (GMM); c latent class growth analysis (LCGA); d longitudinal latent class analysis (LLCA). Black line: population mean trajectory; blue line: individual-specific trajectory; red and green lines: class-specific trajectories; red and green triangles: class-specific values; x: observations for individual i