GPT and obstructive sleep apnea syndrome: Compared with non‐OSAHS patients, those finally diagnosed OSAHS patients were more frequently to be men (79.24% vs. 64.36%), with older age (47 vs. 39.5 years), current drinkers (36.13% vs. 23.23%), with high blood pressures, with the symptom of morning dry mouth/mouth breathing and nocturia, higher AHI, ESS, and Berlin score, higher levels of fasting glucose, triglycerides, alanine aminotransferase, gamma‐glutamyl transferase, and alkaline phosphatase; and lower levels of total bilirubin (all P‐values < 0.05) (Table 2).