Metabolic associated fatty liver disease(MEFLD) is a major chronic liver disease that can lead to various adverse events, such as liver cancer, cardiovascular disease, and chronic kidney disease. The present community-based cohort study enrolls subjects who take health physical examinations at the sub-center outpatient department, Beijing Friendship Hospital. Investigators collect their baseline information, including demographic data, clinical history, physical examination, laboratory results, imageological examination, and so on. Follow-up surveys are conducted annually and the information collected is the same as the baseline. The outcome information, including cardiovascular disease, malignancy, liver cirrhosis, liver decompensation, liver transplantation, and all-cause mortality, are obtained by linking to the hospital discharge database and death registration system of Beijing. The primary aim of the study is to build a risk-stratified evaluation system for MAFLD through the cohort.

The present community-based cohort study enrolls subjects who take physical health examinations at the sub-center outpatient department, Beijing Friendship Hospital. After signing the informed consent, Their previous health physical examination results, which were recorded in the Hospital Information System (HIS) are collected retrospectively. Then, Investigators collect their baseline information, including demographic data, clinical history, physical examination, laboratory results, image logical examination, and so on. Additionally, follow-up surveys will be conducted annually and the information collected is the same as the baseline. The outcome information, including cardiovascular disease, malignancy, liver cirrhosis, liver decompensation, liver transplantation, and all-cause mortality, is obtained from the hospital discharge database and death registration system in Beijing. The study's primary aim is to build a risk-stratified evaluation system for MAFLD through a community population cohort with long-term stable follow-up.

Inclusion Criteria:

• Aged 18 years or older
• Permanent residents in Beijing
• Signing informed consent

Exclusion Criteria:

• No

The present community-based cohort study enrolls subjects who take health physical examinations at the sub-center outpatient department, Beijing Friendship Hospital from April 2022.