Age-specific association between blood pressure and vascular and non-vascular chronic diseases in 0 ·5 million adults in China: a prospective cohort study

Publication date: June 2018 Source:The Lancet Global Health, Volume 6, Issue 6 Author(s): Ben Lacey, Sarah Lewington, Robert Clarke, Xiang Ling Kong, Yiping Chen, Yu Guo, Ling Yang, Derrick Bennett, Fiona Bragg, Zheng Bian, Shaojie Wang, Hua Zhang, Junshi Chen, Robin G Walters, Rory Collins, Richard Peto, Liming Li, Zhengming Chen Background The age-specific association between blood pressure and vascular disease has been studied mostly in high-income countries, and before the widespread use of brain imaging for diagnosis of the main stroke types (ischaemic stroke and intracerebral haemorrhage). We aimed to investigate this relationship among adults in China. Methods 512 891 adults (59% women) aged 30–79 years were recruited into a prospective study from ten areas of China between June 25, 2004, and July 15, 2008. Participants attended assessment centres where they were interviewed about demographic and lifestyle characteristics, and their blood pressure, height, and weight were measured. Incident disease was identified through linkage to local mortality records, chronic disease registries, and claims to the national health insurance system. We used Cox regression analysis to produce adjusted hazard ratios (HRs) relating systolic blood pressure to disease incidence. HRs were corrected for regression dilution to estimate associations with long-term average (usual) systolic blood pressure. Findings During a median follow-up of 9 years (IQR 8–10), the...
Source: The Lancet Global Health - Category: International Medicine & Public Health Source Type: research