Table 2.

Risk of CRCT mathematics failure, stratified by gestational age and Neighborhood Deprivation Index.

	Total		Quartile 1 (least deprived)		Quartile 2		Quartile 3		Quartile 4 (most deprived)
	n failed/total	%	n failed/total	%	n failed/total	%	n failed/total	%	n failed/total	%
Total	41,657/327,316	12.7%	5,430/81,946	6.6%	9,420/81,725	11.5%	11,398/81,807	13.9%	15,409/81,838	18.8%
Term	36,074/294,076	12.3%	4,791/74,967	6.4%	8,273/73,990	11.2%	9,869/73,172	13.5%	13,141/71,947	18.3%
Late preterm	3,927/25,850	15.2%	457/5,628	8.1%	844/6,114	13.8%	1,048/6,709	15.6%	1,578/7,399	21.3%
Moderate preterm	1,285/6,265	20.5%	152/1,183	12.9%	239/1,385	17.3%	360/1,608	22.4%	534/2,089	25.6%
Early preterm	371/1,125	33.0%	30/168	17.9%	64/236	27.1%	121/318	38.1%	156/403	38.7%