TABLE 2.

Nathan and Gorman (2002) Study Criteria and Considerations for Ethnic Minority Youth

Nathan and Gorman (2002)Criteria

Type 1 Studies

I. Study must include a randomized prospective clinical trial

II. Study must include comparison groups with random assignment, clear inclusion and exclusion criteria, blind assessments, state-of-the-art diagnostic methods, and adequate sample size for power

III. There must be clearly described statistical methods

Type 2 Studies

Clinical trials must be performed, but some traits of Type 1 study were missing (e.g., inadequate sample size)

Additional Considerations for Evaluation of Studies With Ethnic Minority Youth

The between-group design experiments must include one or more of the following characteristics:

A. At least 75% of participants in the overall sample are ethnic minorities, or

B. Separate analyses with ethnic minority youth show superiority (statistically significant) to control conditions, or

C. Analyses indicate that ethnicity does not moderate key treatment outcomes, or that treatment is effective with ethnic minority youth despite moderator effect(s)

Note: Additional considerations developed exclusively for this review. Nathan and Gorman's Type 3 to 6 study criteria were not included because they correspond to methodologically less rigorous studies.