Table 5. Gastric cancer-related^* health care utilization and costs: overall and by treatment cohort and line of therapy.

SD = standard deviation; ED = emergency department; USD = United States dollar; SNF = skilled nursing facility. ^*Gastric cancer-related health care utilization and costs during the follow-up period included medical encounters with gastric cancer diagnosis codes and outpatient pharmacy claims or medical claims for gastric cancer drugs or supportive care treatments. ^†Patients receiving cancer-related treatments after the first-line chemotherapy completion date were categorized as 'additionally treated,' and the remaining patients were otherwise classified as 'supportive care only.' ^‡Gastric cancer-related health care utilization and costs were assessed during the following pre-defined periods of assessment: (1) Overall follow-up period: the period between the index gastric cancer diagnosis date and death or the end of the database (December 31, 2009), whichever occurred first; (2) Post-first-line chemotherapy period: the period between the day immediately following the first-line chemotherapy administration end date and death or the end of the database, whichever occurred first; (3) First-line chemotherapy period: the period between the gastric cancer index date and the first-line chemotherapy regimen end date; and (4) Second-line chemotherapy period: the period between the day immediately following the first-line chemotherapy regimen end date and the last date of the second-line chemotherapy regimen among patients who initiated second-line chemotherapy.