PLOD1 and obstructive sleep apnea syndrome: Although the median levels of LH and FSH were also lower in the OSA group, the differences were less pronounced (LH: 3.72 mIU/ml [IQR: 2.71–4.73] vs. 4.27 mIU/ml [IQR: 3.05–5.49], p = 0.007; FSH: 3.97 mIU/ml [IQR: 3.04–4.91] vs. 4.76 mIU/ml [IQR: 3.27–6.25], p = 0.031).