Table 2.

Targeted number of children assessed/followed per year, per site.

GRADE	PK		K		G1		G2		G3	N (site)	N (total)
Year 1	PK = 100		K = 30		G1 = 30		G2 = 30		G3 = 30	220	880
Year 2			K = 100		G1 = 30	↘	G2 = 30	↘	G3 = 30	190	760
Year 3		↘		↘	G1 = 100		G2 = 30	↘	G3 = 30	160	640
Year 4				↘		↘	G2 = 100		G3 = 30	130	520
Year 5						↘		↘	G3 = 100	100	400
								↘

The number listed in the Year 1 row is the initial number of participants recruited per grade, per site. Following Year 1 diagonally per grade illustrates the number of participants who were followed longitudinally from the original sample (e.g., In Year 1, 100 preschoolers were recruited at each site and all 100 preschoolers will be followed longitudinally at each site for a total of 5 years). PK, preschool; K, kindergarten; G1, Grade 1; G2, Grade 2; G3, Grade 3. N (site) refers to the total number of children recruited per grade per site; N (total) refers to the total number of children recruited per grade across all sites.