Table 4.

Results from ANOVA within individual studies.

	Effect of racial group, omnibus analysis		Pairwise comparisons
	F test (df)	P value	White vs Black				White vs Asian
			Mean difference	P value	Bonferroni corrected P value	Mean difference		P value	Bonferroni corrected P value
Study 1	3.34 (2,157)	.03	0.84	.004	.02	0.44		.19	.38
Study 2	7.75 (1,180)	.006	N/Aa	N/A	N/A	N/A		N/A	N/A
Study 3	1.12 (2,183)	.33	0.29	.38	.76	−0.27		.36	.72
Study 4	2.07 (2,72)	.13	0.42	.18	.84	0.52		.06	.12
Study 5	5.18 (1,173)	.02	N/A	N/A	N/A	N/A		N/A	N/A
Study 6	0.36 (1,166)	.55	N/A	N/A	N/A	N/A		N/A	N/A

^aN/A: not applicable (pairwise comparisons are only reported for studies with more than 2 racial groups).