Meanings of using the surveillance in English

Methods: TB is a nationally notifiable disease in South Korea and is monitored using the surveillance system.

Patients and methods: Data was obtained using the Surveillance, Epidemiology and End Results database.

Design: Secondary data analysis using the Surveillance, Epidemiology, and End Results national tumor registry linked with Medicare claims data.

Materials and methods: Using the Surveillance, Epidemiology, and End Results-Medicare data, we identified 132,051 beneficiaries who died as a result of cancer in 2006-2011.

Materials and methods: Using the Surveillance, Epidemiology, and End Results (SEER)-Medicare linked database we selected patients diagnosed with stage I NSCLC between 1998 and 2008.