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Sites similar to happenstudy.com

Happenstudy alternatives & similar sites

The HAPPEN study – Hospital Acquired Pneumonia PrEveNtion: A randomised control trial — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Lung And Respiratory Health →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
pnumonia.com ↗	66 match 1 shared topics	Pneumonia Awareness and Prevention: What You Need to Know	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
barlowhospital.org ↗	64 match 1 shared topics	Respiratory Care in Los Angeles \| Barlow Respiratory Hospital	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
ctcmidtn.com ↗	64 match 1 shared topics	Clinical Trials of Middle Tennessee	en	lung-and-respiratory-health WordPress WooCommerce	robotsllmsaihumans	email phone	none
pneumoniacheck.com ↗	63 match 1 shared topics	PneumoniaCheck™	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
pnuemonia.com ↗	63 match 1 shared topics	Understanding Pneumonia: Causes, Symptoms, and Treatment Options	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
cslbehringevents.com ↗	63 match 1 shared topics	CSL Behring Events	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
alhi.com.au ↗	63 match 1 shared topics	Publications - 4DMedical	AU en	lung-and-respiratory-health WordPress	robotsllmsaihumans	email phone	none
jntnau.com ↗	62 match 1 shared topics	JntNAU – NAU HS460C E-portfolio	en	lung-and-respiratory-health WordPress	robotsllmsaihumans	emailphone	none
lsfmedicalsolutions.com ↗	62 match 1 shared topics	LSF Medical Solutions	en	lung-and-respiratory-health WordPress	robotsllmsaihumans	emailphone	none
pneumologica.com ↗	62 match 1 shared topics	Guía Pneumológica	en	lung-and-respiratory-health	robotsllmsaihumans	emailphone	none
aabipconference.com ↗	62 match 1 shared topics	AABIP 2026: 9th Annual Conference of American Association for Bronchology and Interventional Pulmonology	en	lung-and-respiratory-health WordPress	robots llmsaihumans	emailphone	none
cenerr.com.ar ↗	62 match 1 shared topics	CENERR Centro de Neumonología y Rehabilitación Respiratoria	AR en	lung-and-respiratory-health Webflow	robotsllmsaihumans	emailphone	none
acadiastudy.com ↗	62 match 1 shared topics	ACADIA Adolescent Asthma Clinical Study	en	lung-and-respiratory-health WordPress WooCommerce	robotsllmsaihumans	emailphone	none
avisdds.com ↗	62 match 1 shared topics	Home \| The Airway Revolution	en	lung-and-respiratory-health WordPress	robotsllmsaihumans	emailphone	none
nasitrol.com ↗	62 match 1 shared topics	Nasitrol – Nasal Spray for Sinus Irrigation	en	lung-and-respiratory-health WordPress WooCommerce	robotsllmsaihumans	emailphone	none
bchasthmaresearch.com ↗	62 match 1 shared topics	Asthma and Allergy Clinical Research Center at Boston Children’s Hospital	US~ en	lung-and-respiratory-health	robotsllmsaihumans	email phone	none
cambridgeme.org.uk ↗	62 match 1 shared topics	Cambridge M.E. and L.C. Support Group, CBME – Welcome to the CBME website. We are a voluntary group for anyone living with ME or Long Covid in Cambridgeshire	GB en	lung-and-respiratory-health WordPress	robotsllmsaihumans	emailphone	none
aaahp.org ↗	62 match 1 shared topics	AAAHP - Authorization required	en	lung-and-respiratory-health phpBB	robotsllmsaihumans	email phone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.