Key result
Current smoking linked to ~340% higher all-cause mortality risk versus never smoking.
Why the study?
Does current smoking increase all-cause mortality in adults aged 50+ in China?
Population
29,942 adults (21,658 women and 8,284 men) aged 50+ years in Guangzhou, China
Comparison
Current smoking vs Never smoking
Design
Cohort
Follow-up
average 8.8 years
Authors
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May support targeted cessation in recent Chinese cohorts; extends prior data but leaves causal effects open.
Cohort (n=29,942)
No
Does current smoking increase all-cause mortality in adults aged 50+ in China?
Hazard Ratio: 4.4 (95% CI 3.14–6.17)
p-value: p=<0.001
The mortality risk attributed to smoking in China is rising rapidly in more recent birth cohorts, reaching up to a four-fold increase in those born in the 1950s.
Xu et al. (2018) conducted a cohort in All-cause mortality (n=29,942). Current smoking vs. Never smoking was evaluated on All-cause mortality (HR 4.40, 95% CI 3.14-6.17, p=<0.001). Current smoking was associated with a 4.40-fold increased risk of all-cause mortality compared to never smoking among Chinese adults born since 1950.
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