How does alcohol affect the risk of intracerebral haemorrhage?

The following abstract is based on the Neurochecklist:

Alcohol use and risk of intracerebral hemorrhage

Chen CJ, Brown WM, Moomaw CJ, et al; ERICH Investigators.

Neurology 2017; 88:2043-2051.

Abstract

OBJECTIVE:

To analyze the dose-risk relationship for alcohol consumption and intracerebral hemorrhage (ICH) in the Ethnic/Racial Variations of Intracerebral Hemorrhage (ERICH) study.

METHODS:

ERICH is a multicenter, prospective, case-control study, designed to recruit 1,000 non-Hispanic white patients, 1,000 non-Hispanic black patients, and 1,000 Hispanic patients with ICH. Cases were matched 1:1 to ICH-free controls by age, sex, race/ethnicity, and geographic area. Comprehensive interviews included questions regarding alcohol consumption. Patterns of alcohol consumption were categorized as none, rare (<1 drink per month), moderate (≥1 drink per month and ≤2 drinks per day), intermediate (>2 drinks per day and <5 drinks per day), and heavy (≥5 drinks per day). ICH risk was calculated using the no-alcohol use category as the reference group.

RESULTS:

Multivariable analyses demonstrated an ordinal trend for alcohol consumption: rare (odds ratio [OR] 0.57, p < 0.0001), moderate (OR 0.65, p < 0.0001), intermediate (OR 0.82, p = 0.2666), and heavy alcohol consumption (OR 1.77, p = 0.0003). Subgroup analyses demonstrated an association of rare and moderate alcohol consumption with decreased risk of both lobar and nonlobar ICH. Heavy alcoholconsumption demonstrated a strong association with increased nonlobar ICH risk (OR 2.04, p = 0.0003). Heavy alcohol consumption was associated with significant increase in nonlobar ICH risk in black (OR 2.34, p = 0.0140) and Hispanic participants (OR 12.32, p < 0.0001). A similar association was not found in white participants.

CONCLUSIONS:

This study demonstrated potential protective effects of rare and moderate alcohol consumption on ICH risk. Heavy alcoholconsumption was associated with increased intracerebral haemorrhage risk. Race/ethnicity was a significant factor in alcohol-associated ICH risk; heavy alcohol consumption in black and Hispanic participants poses significant nonlobar ICH risk.

Abstract link

By Nik Frey (niksan) – stock.xchng: http://www.sxc.hu/browse.phtml?f=view&id=207042 [dead link], CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=26539
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