1406-P: Trends in All-Cause and Cause-Specific Mortality in Older Adults With and Without Diabetes—A Territory-Wide Analysis in One Million Older Adults in Hong Kong

Objective: Nationwide data on trends in mortality in older adults with and without diabetes in Asia are lacking. We described the recent trends of all-cause and cause-specific (pneumonia, cardiovascular [CV], and cancer) mortality in adults aged ≥65 years in Hong Kong in 2014-2018. Methods: We performed a territory-wide analysis in 1,152,418 elderlies who had at least one in- or out-patient attendance in the Hospital Authority. We used the Joinpoint regression to assess patterns of mortality rate. Results: In 2014-2018, 354,357 (31.7%) and 763,488 (68.3%) old adults with and without diabetes were included respectively. All-cause death rate has declined in older adults with (458.7 vs. 431.2 events/10,000 person-years, average annual percent change [AAPC]: -3.1% [95% CI -4.2%, -2.1%]) and without (337.0 vs. 294.6 events/10,000 person-years, AAPC: -1.6% [-2.7, -0.4%]) diabetes. In 2018, compared with adults without diabetes, those with diabetes had higher all-cause mortality (1.4-fold), CV- (1.9-fold), and pneumonia-cause (1.3-fold) mortality. Pneumonia was the leading cause of death. CV death has declined significantly in old adults with with (AAPC: -5.5% [-6.8, -4.1%]) and without (AAPC: -5.8% [-8.6, -2.9%]) diabetes. There were no declines in cancer death in older adults with (AAPC: -1.6% [-2.7, 0.4%]) and without (AAPC: -1.6% [-2.7, 3.9%]) diabetes, while cancer death has surpassed CV death in old adults with diabetes. Cancer death has increased markedly in men with diabetes versus those without diabetes (AAPC: 2.9% [1.1, 4.6%] vs. 1.8% [-5.0, 1.4%]), particularly in the youngest-older adults (65-74 years) with diabetes. Conclusions: One in 3 elderlies had diabetes. Overall, cardiovascular-death had declined in these elderlies. Although elderly people with diabetes had a greater decline in all-cause death, they had substantially higher risk of cancer-death than those without diabetes, especially in younger men.