From: Comparison of mixed model based approaches for correcting for population substructure with application to extreme phenotype sampling
SMMAT Method
Estimated Type I Error Rate
Burden (SMMAT-B)
0.0617
SKAT (SMMAT-S)
0.1039
SKAT-O (SMMAT-O)
0.1024
Efficient (SMMAT-E)
0.0883