Comparison of palmitic acid (16:0) molar percentage in stool samples at 1 year of age between ABISASD(n = 23) and matched ABISControls(n = 23). Targeted metabolomics employed mass spectrometry with selected reaction monitoring (SRM) for 22 fatty acids. Controls were selected for stool metabolomics via propensity score matching on biological sex and municipality, with no difference in age at stool collection (controls, 10.89 ± 3.51 months; future ASD, 11.19 ± 2.37; p = 0.726).
