Blood pressure lowering and prevention of dementia: an individual patient data meta-analysis
Observational studies indicate U-shaped associations of blood pressure (BP) and incident dementia in older age, but randomized controlled trials of BP-lowering treatment show mixed results on this outcome in hypertensive patients. A pooled individual participant data analysis of five seminal randomi...
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| Veröffentlicht in: | European heart journal 2022-12, Vol.43 (48), p.4980-4990 |
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| creator | Peters, Ruth Xu, Ying Fitzgerald, Oisin Aung, Htein Linn Beckett, Nigel Bulpitt, Christopher Chalmers, John Forette, Francoise Gong, Jessica Harris, Katie Humburg, Peter Matthews, Fiona E Staessen, Jan A Thijs, Lutgarde Tzourio, Christophe Warwick, Jane Woodward, Mark Anderson, Craig S |
| description | Observational studies indicate U-shaped associations of blood pressure (BP) and incident dementia in older age, but randomized controlled trials of BP-lowering treatment show mixed results on this outcome in hypertensive patients. A pooled individual participant data analysis of five seminal randomized double-blind placebo-controlled trials was undertaken to better define the effects of BP-lowering treatment for the prevention of dementia.
Multilevel logistic regression was used to evaluate the treatment effect on incident dementia. Effect modification was assessed for key population characteristics including age, baseline systolic BP, sex, and presence of prior stroke. Mediation analysis was used to quantify the contribution of trial medication and changes in systolic and diastolic BP on risk of dementia. The total sample included 28 008 individuals recruited from 20 countries. After a median follow-up of 4.3 years, there were 861 cases of incident dementia. Multilevel logistic regression reported an adjusted odds ratio 0.87 (95% confidence interval: 0.75, 0.99) in favour of antihypertensive treatment reducing risk of incident dementia with a mean BP lowering of 10/4 mmHg. Further multinomial regression taking account of death as a competing risk found similar results. There was no effect modification by age or sex. Mediation analysis confirmed the greater fall in BP in the actively treated group was associated with a greater reduction in dementia risk.
The first single-stage individual patient data meta-analysis from randomized double-blind placebo-controlled clinical trials provides evidence to support benefits of antihypertensive treatment in late-mid and later life to lower the risk of dementia. Questions remain as to the potential for additional BP lowering in those with already well-controlled hypertension and of antihypertensive treatment commenced earlier in the life-course to reduce the long-term risk of dementia.
Class I evidence in favour of antihypertensive treatment reducing risk of incident dementia compared with placebo. |
| doi_str_mv | 10.1093/eurheartj/ehac584 |
| format | Article |
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Multilevel logistic regression was used to evaluate the treatment effect on incident dementia. Effect modification was assessed for key population characteristics including age, baseline systolic BP, sex, and presence of prior stroke. Mediation analysis was used to quantify the contribution of trial medication and changes in systolic and diastolic BP on risk of dementia. The total sample included 28 008 individuals recruited from 20 countries. After a median follow-up of 4.3 years, there were 861 cases of incident dementia. Multilevel logistic regression reported an adjusted odds ratio 0.87 (95% confidence interval: 0.75, 0.99) in favour of antihypertensive treatment reducing risk of incident dementia with a mean BP lowering of 10/4 mmHg. Further multinomial regression taking account of death as a competing risk found similar results. There was no effect modification by age or sex. Mediation analysis confirmed the greater fall in BP in the actively treated group was associated with a greater reduction in dementia risk.
The first single-stage individual patient data meta-analysis from randomized double-blind placebo-controlled clinical trials provides evidence to support benefits of antihypertensive treatment in late-mid and later life to lower the risk of dementia. Questions remain as to the potential for additional BP lowering in those with already well-controlled hypertension and of antihypertensive treatment commenced earlier in the life-course to reduce the long-term risk of dementia.
Class I evidence in favour of antihypertensive treatment reducing risk of incident dementia compared with placebo.</description><identifier>ISSN: 0195-668X</identifier><identifier>EISSN: 1522-9645</identifier><identifier>DOI: 10.1093/eurheartj/ehac584</identifier><identifier>PMID: 36282295</identifier><language>eng</language><publisher>England: Oxford University Press (OUP)</publisher><subject>Antihypertensive Agents - pharmacology ; Antihypertensive Agents - therapeutic use ; Blood Pressure ; Dementia - epidemiology ; Dementia - prevention & control ; Humans ; Hypertension - complications ; Hypertension - drug therapy ; Life Sciences ; Randomized Controlled Trials as Topic ; Santé publique et épidémiologie ; Stroke - drug therapy</subject><ispartof>European heart journal, 2022-12, Vol.43 (48), p.4980-4990</ispartof><rights>The Author(s) 2022. Published by Oxford University Press on behalf of the European Society of Cardiology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c378t-a3fe1549883c84c27cb4468ace00d95c6a59f6751809727d3293ca30775de6d73</citedby><cites>FETCH-LOGICAL-c378t-a3fe1549883c84c27cb4468ace00d95c6a59f6751809727d3293ca30775de6d73</cites><orcidid>0000-0002-6517-2984 ; 0000-0003-0148-3617 ; 0000-0001-9554-8869</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36282295$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-03891236$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Peters, Ruth</creatorcontrib><creatorcontrib>Xu, Ying</creatorcontrib><creatorcontrib>Fitzgerald, Oisin</creatorcontrib><creatorcontrib>Aung, Htein Linn</creatorcontrib><creatorcontrib>Beckett, Nigel</creatorcontrib><creatorcontrib>Bulpitt, Christopher</creatorcontrib><creatorcontrib>Chalmers, John</creatorcontrib><creatorcontrib>Forette, Francoise</creatorcontrib><creatorcontrib>Gong, Jessica</creatorcontrib><creatorcontrib>Harris, Katie</creatorcontrib><creatorcontrib>Humburg, Peter</creatorcontrib><creatorcontrib>Matthews, Fiona E</creatorcontrib><creatorcontrib>Staessen, Jan A</creatorcontrib><creatorcontrib>Thijs, Lutgarde</creatorcontrib><creatorcontrib>Tzourio, Christophe</creatorcontrib><creatorcontrib>Warwick, Jane</creatorcontrib><creatorcontrib>Woodward, Mark</creatorcontrib><creatorcontrib>Anderson, Craig S</creatorcontrib><creatorcontrib>Dementia rIsk REduCTion (DIRECT) collaboration</creatorcontrib><title>Blood pressure lowering and prevention of dementia: an individual patient data meta-analysis</title><title>European heart journal</title><addtitle>Eur Heart J</addtitle><description>Observational studies indicate U-shaped associations of blood pressure (BP) and incident dementia in older age, but randomized controlled trials of BP-lowering treatment show mixed results on this outcome in hypertensive patients. A pooled individual participant data analysis of five seminal randomized double-blind placebo-controlled trials was undertaken to better define the effects of BP-lowering treatment for the prevention of dementia.
Multilevel logistic regression was used to evaluate the treatment effect on incident dementia. Effect modification was assessed for key population characteristics including age, baseline systolic BP, sex, and presence of prior stroke. Mediation analysis was used to quantify the contribution of trial medication and changes in systolic and diastolic BP on risk of dementia. The total sample included 28 008 individuals recruited from 20 countries. After a median follow-up of 4.3 years, there were 861 cases of incident dementia. Multilevel logistic regression reported an adjusted odds ratio 0.87 (95% confidence interval: 0.75, 0.99) in favour of antihypertensive treatment reducing risk of incident dementia with a mean BP lowering of 10/4 mmHg. Further multinomial regression taking account of death as a competing risk found similar results. There was no effect modification by age or sex. Mediation analysis confirmed the greater fall in BP in the actively treated group was associated with a greater reduction in dementia risk.
The first single-stage individual patient data meta-analysis from randomized double-blind placebo-controlled clinical trials provides evidence to support benefits of antihypertensive treatment in late-mid and later life to lower the risk of dementia. Questions remain as to the potential for additional BP lowering in those with already well-controlled hypertension and of antihypertensive treatment commenced earlier in the life-course to reduce the long-term risk of dementia.
Class I evidence in favour of antihypertensive treatment reducing risk of incident dementia compared with placebo.</description><subject>Antihypertensive Agents - pharmacology</subject><subject>Antihypertensive Agents - therapeutic use</subject><subject>Blood Pressure</subject><subject>Dementia - epidemiology</subject><subject>Dementia - prevention & control</subject><subject>Humans</subject><subject>Hypertension - complications</subject><subject>Hypertension - drug therapy</subject><subject>Life Sciences</subject><subject>Randomized Controlled Trials as Topic</subject><subject>Santé publique et épidémiologie</subject><subject>Stroke - drug therapy</subject><issn>0195-668X</issn><issn>1522-9645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kUtvFDEQhC1ERJaQH8AF-QiHIX6MX9ySCEiklbiAxCGS1bF7WEcz48WeWZR_zyy77KnVXV_VoYuQt5x95MzJK5zLBqFMT1e4gaBs-4KsuBKicbpVL8mKcacare3Pc_K61ifGmNVcvyLnUgsrhFMr8nDT5xzptmCtc0Ha5z9Y0viLwvjvusNxSnmkuaMRh_0CnxaNpjGmXYoz9HQLU1oEGmECOuAEDYzQP9dU35CzDvqKl8d5QX58-fz99q5Zf_t6f3u9boI0dmpAdshV66yVwbZBmPDYttpCQMaiU0GDcp02ilvmjDBRCicDSGaMiqijkRfkwyF3A73fljRAefYZkr-7Xvv9jUnruJB6xxf2_YHdlvx7xjr5IdWAfQ8j5rl6YYRttdZCLyg_oKHkWgt2p2zO_L4AfyrAHwtYPO-O8fPjgPHk-P9x-ReEL4UP</recordid><startdate>20221221</startdate><enddate>20221221</enddate><creator>Peters, Ruth</creator><creator>Xu, Ying</creator><creator>Fitzgerald, Oisin</creator><creator>Aung, Htein Linn</creator><creator>Beckett, Nigel</creator><creator>Bulpitt, Christopher</creator><creator>Chalmers, John</creator><creator>Forette, Francoise</creator><creator>Gong, Jessica</creator><creator>Harris, Katie</creator><creator>Humburg, Peter</creator><creator>Matthews, Fiona E</creator><creator>Staessen, Jan A</creator><creator>Thijs, Lutgarde</creator><creator>Tzourio, Christophe</creator><creator>Warwick, Jane</creator><creator>Woodward, Mark</creator><creator>Anderson, Craig S</creator><general>Oxford University Press (OUP)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-6517-2984</orcidid><orcidid>https://orcid.org/0000-0003-0148-3617</orcidid><orcidid>https://orcid.org/0000-0001-9554-8869</orcidid></search><sort><creationdate>20221221</creationdate><title>Blood pressure lowering and prevention of dementia: an individual patient data meta-analysis</title><author>Peters, Ruth ; 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A pooled individual participant data analysis of five seminal randomized double-blind placebo-controlled trials was undertaken to better define the effects of BP-lowering treatment for the prevention of dementia.
Multilevel logistic regression was used to evaluate the treatment effect on incident dementia. Effect modification was assessed for key population characteristics including age, baseline systolic BP, sex, and presence of prior stroke. Mediation analysis was used to quantify the contribution of trial medication and changes in systolic and diastolic BP on risk of dementia. The total sample included 28 008 individuals recruited from 20 countries. After a median follow-up of 4.3 years, there were 861 cases of incident dementia. Multilevel logistic regression reported an adjusted odds ratio 0.87 (95% confidence interval: 0.75, 0.99) in favour of antihypertensive treatment reducing risk of incident dementia with a mean BP lowering of 10/4 mmHg. Further multinomial regression taking account of death as a competing risk found similar results. There was no effect modification by age or sex. Mediation analysis confirmed the greater fall in BP in the actively treated group was associated with a greater reduction in dementia risk.
The first single-stage individual patient data meta-analysis from randomized double-blind placebo-controlled clinical trials provides evidence to support benefits of antihypertensive treatment in late-mid and later life to lower the risk of dementia. Questions remain as to the potential for additional BP lowering in those with already well-controlled hypertension and of antihypertensive treatment commenced earlier in the life-course to reduce the long-term risk of dementia.
Class I evidence in favour of antihypertensive treatment reducing risk of incident dementia compared with placebo.</abstract><cop>England</cop><pub>Oxford University Press (OUP)</pub><pmid>36282295</pmid><doi>10.1093/eurheartj/ehac584</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-6517-2984</orcidid><orcidid>https://orcid.org/0000-0003-0148-3617</orcidid><orcidid>https://orcid.org/0000-0001-9554-8869</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Antihypertensive Agents - pharmacology Antihypertensive Agents - therapeutic use Blood Pressure Dementia - epidemiology Dementia - prevention & control Humans Hypertension - complications Hypertension - drug therapy Life Sciences Randomized Controlled Trials as Topic Santé publique et épidémiologie Stroke - drug therapy |
| title | Blood pressure lowering and prevention of dementia: an individual patient data meta-analysis |
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