ADIPOQ and metabolic syndrome: On the other hand, given a type I (α) error of 0.05, type II (β) error of 0.2, the proportion of apM1 +45 TT genotype among MetS-free subjects of 0.42, detectable OR of 1.8, and the MetS prevalence of 33%, and the minimum sample size required for the MetS group is 138.