Adjusted associations between the averaged concentrations (ng/mL, ln-transformed SG-adjusted) of maternal urinary mOPPs, mPYRs, and mNNIs over the three trimesters and children’s MDI and PDI scores using multivariate linear regression (MLR) models for participants from a birth cohort study in Wuhan, China, 2014–2017 ( participants, samples). The models were adjusted for maternal age (categorical), PBMI (categorical), maternal education (categorical), passive smoking (categorical), folic acid supplementation during pregnancy (categorical), parity (categorical), child sex (categorical), breastfeeding duration (categorical), and delivery mode (categorical). Sex-stratified analyses were adjusted for all the abovementioned confounders except child sex. * were considered statistically significant (FDR corrections were performed to adjust for multiple comparisons). The numerical values are listed in Table S7. Note: 3-PBA, 3-phenoxybenzoic acid; 5-hydroxy-IMI, 5-hydroxy-imidacloprid; CLO, clothianidin; DEP, diethyl phthalate; DETP, diethyl thiophosphate; DM-ACE, desmethyl-acetamiprid; DM-CLO, desmethyl-clothianidin; DMP, dimethyl phosphate; DMTP, dimethylthiophosphate; DN-IMI, desnitro-imidacloprid; IMI, imidacloprid; IMI-olefin, imidacloprid-olefin; MDI, mental development index; mNNIs, metabolites of neonicotinoid insecticides; mOPPs, metabolites of organophosphate insecticides; mPYRs, metabolites of pyrethroids; PBMI, prepregnancy body mass index; PDI, psychomotor development index; PNP, 4-nitrophenol; TCPy, 3,5,6-trichloro-2-pyridinol; THM, thiamethoxam; trans-DCCA, trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid.