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 one second; CRP: C-reactive protein; PCT: procalcitonin; IL-6: interleukin-6. Here, IL6 is linked to generalized anxiety disorder.