Get help now — free helplines

You can call any of these for free. You do not need a diagnosis, an appointment, or a crisis to call — questions and plain exhaustion are reasons enough.

  • Alzheimer's Association 24/7 Helpline 800-272-3900 24 hours a day, 365 days a year Free, confidential support and information for people with dementia, caregivers, families and the public. Master's-level clinicians. Also Spanish.
  • 988 Suicide & Crisis Lifeline 988 24/7 Call or text 988, or chat at 988lifeline.org. For anyone in emotional distress or a mental-health crisis, including caregivers.
  • Alzheimer's Foundation of America (AFA) Helpline 866-232-8484 9:00 am - 9:00 pm ET, seven days a week Licensed social workers providing support, info and referrals. Also text message and web chat. Text: 646-586-5283

In a medical emergency, call 911. More numbers, and what each line does, on the help page.

This page is alzhub.org's plain-English summary of a published study, not the paper itself. It is generated from the record we hold for this study, sourced and linked below — check the original for the full text and methods.

✓ Peer-reviewed alzhub usefulness score 67 out of 100. Clinical trials

Topic: Drug trials: efficacy and safety

Brief Report15 September 1991Postmenopausal Estrogen and Prevention BiasElizabeth Barrett-Connor, MDElizabeth Barrett-Connor, MDAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-115-6-455 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptIn the last decade many investigators reported that postmenopausal women taking estrogen were at reduced risk for cardiovascular disease compared with women not taking estrogen (1). The results are fairly consistent and biologically plausible. PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics Cited ByCaring for Patients in an Evidence-Limited WorldPostmenopausal Hormone Therapy and Colorectal Cancer Risk by Molecularly Defined Subtypes and Tumor LocationNegative controls to detect uncontrolled confounding in observational studies of mammographic screening comparing participants and non-participantsChapitre 2 : Maladies cardiovasculairesImpact of Smoking Status on Stroke RecurrenceElizabeth Barrett-Connor: Instrumental Contributor to the Understanding of Midlife Well-being and Health in Both Women and MenAn introduction to instrumental variable assumptions, validation and estimationLong-term postmenopausal estrogen therapy may be associated with increased risk of breast cancer: a cohort studyHistory of hot flashes and aortic calcification among postmenopausal womenRace, Menopausal Hormone Therapy, and Invasive Breast Cancer in the Carolina Breast Cancer StudySmoking cessation and outcome after ischemic stroke or TIAEstrogen and Cardiovascular Disease: Is Timing Everything?Lost in Translation?Women and Coronary Artery DiseaseManaging Menopause Chapter 2 Cardiovascular DiseaseWhile hormone therapy unlikely harmful in younger postmenopausal women at low CV risk, protective effects cannot be claimedDesign Considerations for Clinical Investigations of Osteoporosis13th Annual C. A literature reviewAbstracts of the European Association of Poisons Centres and Clinical Toxicologists XXV International CongressHormone therapy and coronary artery calcification in asymptomatic postmenopausal women: the Rancho Bernardo StudyHormone Replacement Therapy and Risk of Acute Myocardial InfarctionOverweight and Effect of Hormone Replacement Therapy on Lipid Profiles in Postmenopausal WomenEstrogens and stroke: Use of oral contraceptives and postmenopausal use of estrogen: Current recommendationsHormone therap

Key findings

Study details

How this study scored 67/100
How this study's score is builtJournal tier 9 of 10; Journal's citation record left out, no data; Study design 12 of 12; Strength of evidence 5 of 5; Peer-review validation 10 of 10; How recent 1 of 5; Sample size 0 of 4; Effect reported 0 of 3; Studied in people 0 of 3; Randomised / blinded 0 of 2; Times cited left out, no data; Citations per year left out, no data; Impact for its field and year left out, no data; Cited by studies here left out, no data; Still being cited left out, no data; Senior author's track record left out, no data; Institution's track record left out, no data; Multi-centre collaboration left out, no data; Indexed in PubMed 2 of 2; Free to read 0 of 2. 39 of the 58 points it could be judged on, which is 67 of 100. Total 67 of 100.39 of the 58 points we could judge = 67 of 100

Published in a leading specialty journal, and it is a systematic review of all the studies on the question. Scored zero for sample size, effect reported and studied in people because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 39 of the 58 points we could judge it on, which is 67 out of 100.

ComponentPointsWhy
Journal tier 9 / 10 Tier 2 — leading specialty journal (Annals of Internal Medicine)
Journal's citation record — / 4 No journal record from OpenAlex — left out of this score
Study design 12 / 12 A systematic review of all the studies on the question
Strength of evidence 5 / 5 Rated “high” in our summary
Peer-review validation 10 / 10 Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent 1 / 5 1991 — older than 20 years, still counted
Sample size 0 / 4 Participant count not stated — scores zero (not stated in the record — scored 0)
Effect reported 0 / 3 No effect size reported — scores zero (not stated in the record — scored 0)
Studied in people 0 / 3 Not stated whether this was studied in people — scores zero (not stated in the record — scored 0)
Randomised / blinded 0 / 2 A review of other studies — randomisation is not credited here
Times cited — / 7 No citation count (not found in OpenAlex) — left out of this score
Citations per year — / 5 No citation count or no year — left out of this score
Impact for its field and year — / 6 No field-weighted citation impact (OpenAlex has none yet) — left out of this score
Cited by studies here — / 6 Not yet checked against this library's citation graph — left out of this score
Still being cited — / 4 No yearly citation counts — left out of this score
Senior author's track record — / 4 Senior author's record not available — left out of this score
Institution's track record — / 3 No institution listed in OpenAlex — left out of this score
Multi-centre collaboration — / 3 Institutions not listed — left out of this score
Indexed in PubMed 2 / 2 Indexed in PubMed (PMID 1872493)
Free to read 0 / 2 Behind a paywall — scores zero
Points 39 / 58 Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 39 of the 58 points we could judge it on is 67 out of 100.
Total 67 / 100 —

What each of these 20 components measures, and what this score is not →

Read the original

Free copy unknown: no free-copy check has an answer for this record yet. That does not mean it is paywalled.

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.

APA 7th

Barrett-Connor, E. L. (1991). Postmenopausal Estrogen and Prevention Bias. Annals of Internal Medicine. https://doi.org/10.7326/0003-4819-115-6-455

Vancouver

Barrett-Connor EL. Postmenopausal Estrogen and Prevention Bias. Annals of Internal Medicine. 1991. doi:10.7326/0003-4819-115-6-455. PMID: 1872493.

BibTeX

@article{barrettconnor1991-1872493,
  author  = {Barrett-Connor, Elizabeth L.},
  title   = {{Postmenopausal Estrogen and Prevention Bias}},
  journal = {Annals of Internal Medicine},
  year    = {1991},
  doi     = {10.7326/0003-4819-115-6-455},
  pmid    = {1872493},
  url     = {https://doi.org/10.7326/0003-4819-115-6-455}
}

Related studies in Clinical trials

Also tagged “deaths”

109 studies in the library carry the topic tag “deaths”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 109 tagged studies.

Similar studies

More on Clinical trials

See all studies in Clinical trials →