BMI: Body mass index; GAD-7: Generalized anxiety disorder-7 scale; PHQ-9: Patient health questionnaire-9 scale;  SpO2: resting room air pulse oximetry; TST90: total sleep time with oxygen saturation <90%; ODI: oxygen desaturation index; CT: computed tomography; FVC: function vital capacity; FEV1: forced expiratory volume in 1 second; CRP: C-reactive protein; PCT: Procalcitonin; IL-6: interleukin-6. This evidence concerns the gene IL6 and generalized anxiety disorder.