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BP and cholesterol are associated with vascular mortality

General

Clinical Question:
Are cholesterol and blood pressure associated with an increase in vascular mortality?

Bottom Line:
This study reinforces what we already know: Higher cholesterol levels and blood pressure are each associated with an increased risk of vascular mortality. Be careful with these results; this kind of study doesn't tell us that lowering cholesterol levels and blood pressure will prevent deaths. For that, we'd need an intervention trial. (LOE = 1a)

Reference:
Prospective Studies Collaboration, Lewington S, Whitlock G, Clarke R, et al. Blood cholesterol and vascular mortality by age, sex, and blood pressure: a meta-analysis of individual data from 61 prospective studies with 55,000 vascular deaths. Lancet 2007;370(9602):1829-1839.  [PMID:18061058]

Study Design:
Meta-analysis (other)

Setting:
Outpatient (any)

Synopsis:
These intrepid authors pooled data on nearly 900,000 individual patients enrolled in 61 prospective cohort studies. In these studies, approximately 55,000 patients died. Only 150,000 of the patients had lipid levels available, of whom approximately 5000 died. The authors evaluated the relationship between cholesterol level, blood pressure, age, and gender on vascular mortality (ischemic heart disease, stroke, and "other"). To reduce undue influence of a few outliers, they excluded patients with astronomical cholesterol readings. They don't report how many patients dropped out of the studies or the number of deaths from all causes. They do, however, report MANY relationships. If you want all the data, get the paper. On the whole, the authors found that the higher the cholesterol level, the greater the risk of vascular death. They also report a nearly linear risk of vascular mortality that increases as the patient gets older, independent of gender. Blood pressure has a similar relationship and blood pressure and cholesterol have additive effects. In contrast with randomized trials that show statins may decrease stroke risk, lipids were weakly and inconsistently associated with stroke deaths. This reinforces the theory that statins may have beneficial effects independent of their effects on lipids.

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Citation

Slawson, David C., et al., editors. "BP and Cholesterol Are Associated With Vascular Mortality." EE+ POEM Archive, John Wiley & Sons, 2019. Evidence Central, evidence.unboundmedicine.com/evidence/view/infoPOEMs/426356/all/BP_and_cholesterol_are_associated_with_vascular_mortality.
BP and cholesterol are associated with vascular mortality. In: Slawson DC, Shaughnessy AF, Ebell MH, et al, eds. EE+ POEM Archive. John Wiley & Sons; 2019. https://evidence.unboundmedicine.com/evidence/view/infoPOEMs/426356/all/BP_and_cholesterol_are_associated_with_vascular_mortality. Accessed June 16, 2019.
BP and cholesterol are associated with vascular mortality. (2019). In Slawson, D. C., Shaughnessy, A. F., Ebell, M. H., & Barry, H. (Eds.), EE+ POEM Archive. Available from https://evidence.unboundmedicine.com/evidence/view/infoPOEMs/426356/all/BP_and_cholesterol_are_associated_with_vascular_mortality
BP and Cholesterol Are Associated With Vascular Mortality [Internet]. In: Slawson DC, Shaughnessy AF, Ebell MH, Barry H, editors. EE+ POEM Archive. John Wiley & Sons; 2019. [cited 2019 June 16]. Available from: https://evidence.unboundmedicine.com/evidence/view/infoPOEMs/426356/all/BP_and_cholesterol_are_associated_with_vascular_mortality.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - BP and cholesterol are associated with vascular mortality ID - 426356 ED - Slawson,David C, ED - Shaughnessy,Allen F, ED - Ebell,Mark H, ED - Barry,Henry, BT - EE+ POEM Archive UR - https://evidence.unboundmedicine.com/evidence/view/infoPOEMs/426356/all/BP_and_cholesterol_are_associated_with_vascular_mortality PB - John Wiley & Sons DB - Evidence Central DP - Unbound Medicine ER -