PLOD1 and polycystic ovary syndrome: Also of importance, the PCOS group also had higher BMI and body fat percentage (Table 1), and adiposity represents an important potential confounder with regard to factors such as average circulating LH concentrations and LH pulse amplitude (Arroyo et al., 1997; Morales et al., 1996; Pagan et al., 2006; Taylor et al., 1997).