Fig. 2

Kaplan–Meier curves of cumulative hazards of GERD by the three statuses of frailty. GERD, gastroesophageal reflux disease. The y-axis indicates the cumulative hazard of GERD, and the x-axis indicates follow-up time in years.

Kaplan–Meier curves of cumulative hazards of GERD by the three statuses of frailty. GERD, gastroesophageal reflux disease. The y-axis indicates the cumulative hazard of GERD, and the x-axis indicates follow-up time in years.