Abstract:
:The Salt Substitute and Stroke Study is an ongoing 5-year large-scale cluster randomized trial investigating the effects of potassium-enriched salt substitute compared to usual salt on the risk of stroke. The study involves 600 villages and 20,996 individuals in rural China. Intermediate risk markers were measured in a random subsample of villages every 12 months over 3 years to track progress against key assumptions underlying study design. Measures of 24-hour urinary sodium, 24-hour urinary potassium, blood pressure and participants' use of salt substitute were recorded, with differences between intervention and control groups estimated using generalized linear mixed models. The primary outcome of annual event rate in the two groups combined was determined by dividing confirmed fatal and non-fatal strokes by total follow-up time in the first 2 years. The mean differences (95% CI) were -0.32 g (-0.68 to 0.05) for 24-hour urinary sodium, +0.77 g (+0.60 to +0.93) for 24-hour urinary potassium, -2.65 mmHg (-4.32 to -0.97) for systolic blood pressure and +0.30 mmHg (-0.72 to +1.32) for diastolic blood pressure. Use of salt substitute was reported by 97.5% in the intervention group versus 4.2% in the control group (P<.0001). The overall estimated annual event rate for fatal and non-fatal stroke was 3.2%. The systolic blood pressure difference and the annual stroke rate were both in line with the statistical assumptions underlying study design. The trial should be well placed to address the primary hypothesis at completion of follow-up.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Huang L,Tian M,Yu J,Li Q,Liu Y,Yin X,Wu JH,Marklund M,Wu Y,Li N,Elliott P,Yan LL,Labarthe DR,Hao Z,Shi J,Feng X,Zhang J,Zhang Y,Zhang R,Zhou B,Li Z,Sun J,Zhao Y,Yu Y,Neal Bdoi
10.1016/j.ahj.2019.12.020subject
Has Abstractpub_date
2020-03-01 00:00:00pages
136-145eissn
0002-8703issn
1097-6744pii
S0002-8703(20)30005-3journal_volume
221pub_type
杂志文章,随机对照试验abstract::Although many patients with coronary artery disease (CAD) have a positive exercise test without pain, the frequency and significance of this "silent" ischemia is unclear. Therefore, we studied 122 consecutive clinically stable patients with angiographically defined CAD (greater than 75 per cent luminal stenosis) and a...
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章,多中心研究
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究
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更新日期:2011-08-01 00:00:00
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pub_type: 临床试验,杂志文章
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更新日期:1992-10-01 00:00:00
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更新日期:1997-02-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2004.06.029
更新日期:2005-05-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2004-05-01 00:00:00
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章
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更新日期:2000-09-01 00:00:00
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pub_type: 杂志文章,meta分析
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pub_type: 杂志文章
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更新日期:2005-04-01 00:00:00