. Author manuscript; available in PMC: 2018 Feb 18.

Published in final edited form as: Psychiatr Serv. 2016 Nov 15;68(4):345–352. doi: 10.1176/appi.ps.201600052

Table 1.

Intervention groups and their standardized test scores^a

Curriculum	Contact	Materials	% Passed Standardized Test	Mean % Passed
Yes	No	No	School 1 – 79	75
Yes	No	No	School 2 – 70	75
Yes	Yes	No	School 1 – 87	75
Yes	Yes	No	School 2 – 62	75
Yes	No	Yes	School 1 – 92	76
Yes	No	Yes	School 2 – 59	76
Yes	Yes	Yes	School 1 – 73	73
Yes	Yes	Yes	School 2 – 72	73
No	No	No	School 1 – 79	74
No	No	No	School 2 – 68	74
No	Yes	No	School 1 – 86	75
No	Yes	No	School 2 – 64	75
No	No	Yes	School 1 – 76	74
No	No	Yes	School 2 – 71	74
No	Yes	Yes	School 1 – 82	74
No	Yes	Yes	School 2 – 66	74

Two schools withdrew from the study for non-study-related reasons. Consequently the study was repeated during a second academic year with a new set of 6^th-grade students in five of the original schools, chosen to have similar demographics to the lost schools. Thus a total of 19 classes from 14 schools were included in the study.