Research Article

Renal Dysfunction is a Risk Factor of Death after Gastric Endoscopic Submucosal Dissection in Elderly Patients Aged ≥80 Years

Table 4

Long-term outcomes of endoscopic submucosal dissection.

Elderly group (108 patients)Nonelderly group (425 patients) value

Mean observation period (mean ± SD), months26.9 ± 23.236.4 ± 29.6<0.05
Gastric cancer death after ESD, n (%)1 (0.9)1 (0.2)n.s.
Deaths caused by conditions other than gastric cancer, n (%)13 (12.0)28 (6.6)0.06
Mean period from ESD to death, (mean ± SD), months30.2 ± 16.626.8 ± 17.8n.s.
Cause of death, n (%)
 Renal dysfunction2 (15.4)0 (0)<0.05
 Cardiovascular disease1 (7.7)2 (7.1)n.s.
 Cerebrovascular events2 (15.4)2 (7.1)n.s.
 Pneumoniae1 (7.7)3 (10.7)n.s.
 Cancer (except for gastric cancer)4 (30.8)9 (32.2)n.s.
 Others3 (23.0)12 (42.9)n.s.

ESD, endoscopic submucosal dissection; SD, standard deviation. The percentage was calculated according to the number of patients for each cause/deaths caused by conditions other than gastric cancer. Unpaired t-test; Fisher’s exact test; chi-square test.