Fig. 2: Demographics and morphometrics variables versus socioeconomic factors. | Molecular Psychiatry

Fig. 2: Demographics and morphometrics variables versus socioeconomic factors.

From: Associations of family income with cognition and brain structure in USA children: prevention implications

Fig. 2

Linear associations of family income (FI) with fluid (FluidComp), crystallized (CrysComp), and total (CognComp) cognition composites (A), and with relative measures of total cortical volume (CV) and mean cortical thickness (CT) (D), averaged within participants of the same FI bracket. Effect size (partial η2) corresponding to nine ANCOVA factors and two independent samples (Discovery and Validation) for three cognitive scores (B) and three morphometrics (E). Scatter plots showing the reproducibility of the effect sizes (C, F). FI brackets: (1) <$5000; (2) $5000–12,000; (3) $12,000–16,000; (4) $16,000–25,000; (5) $25,000–35,000; (6) $35,000–50,000; (7) $50,000–50,000; (8) $75,000–100,000; (9) $100,000–200,000; (10) >$200,000. Factorial ANCOVA with nine factors of interest [FI, RLE, excess weight (EW), siblings (SIB), SMA, PED, sex, age, and area deprivation index (ADI)], and four covariates of no interest (race, intracranial volume, scanner manufacturer, and intra-scan head motion). Discovery and Validation samples of equal size (N = 3892), matched by demographic, socioeconomic, morphometric, and cognitive variables (Table 1).

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