. Author manuscript; available in PMC: 2020 Apr 1.

Published in final edited form as: J Sch Psychol. 2019 Mar 15;73:56–73. doi: 10.1016/j.jsp.2019.03.003

Table 2.

Sample Size and Attrition Rate

	9^th	10^th	11^th	12th
Cohort A	n = 467	n = 453 (3%)	n = 367 (19%)
Cohort B		n = 408	n = 391 (4%)	n = 306 (22%)
Total	n = 467	n = 861	n = 758	n = 306