“…Higher maternal education was associated with higher intelligence quotient and executive functioning in the CKiD cohort. 51 Although the KNOW-Ped CKD study of mild-to-moderate CKD in South Korea 52 ( Supplementary Table S1 ) found no crude association of family SEP with full-scale intelligence quotient, numbers were small, and estimates indicated poorer functioning in the lowest group. Findings for psychosocial functioning and mental health are conflicting, including significant and nonsignificant associations for income 53 , 54 and education 53 , 55 across CKiD and KNOW-Ped studies.…”