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Health Behavior clinical trials

The registry lists 967 studies for Health Behavior across more than 10 countries. 165 are recruiting or about to start. 512 of them are mainly about Health Behavior (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its 17 narrower conditions too, such as Smoking Cessation: 6,588 studies, 1,155 open.

ClinicalTrials.gov finds 15,335 studies for Health Behavior. How that becomes 965 here

This page counts the studies the registry files under Health Behavior, and those it files under no condition that list Health Behaviorthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 15,335Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −5,584Filed under a narrower condition, counted on its own pageSmoking Cessation 1,551 · Medication Adherence 917 · Patient Satisfaction 855 · Patient Compliance 681 · Patient Participation 365 · Treatment Adherence and Compliance 302 · 11 more
  3. −11List Health Behavior as a condition, but the registry did not file them under itMost often written as “Health Behavior Change” (5), “Oral Health Behavior Change” (4), and “Social Transmission of Health Behaviors” (1). The registry filed them under other conditions only, most often Sedentary Behavior (2) and Motor Activity (2).
  4. −8,775Match it another way144 name it in the title, 45 in a keyword, and 8,586 by a synonym or other text the search reads.
  5. 965The count on this page11 of them list Health Behavior in their own words; the registry filed them under no condition.

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Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

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Status

Completed
657
Recruiting
93
Status unknown
72
Not yet recruiting
50
Active, not recruiting
49
Enrolling by invitation
22

Phase

Phase 2
16
Phase 1
11
Phase 3
9
Phase 4
5
Early Phase 1
2

Where

United States
420
Turkey
73
Canada
42
United Kingdom
32
China
28
Spain
21

Who runs them

University of Pennsylvania (17) · Duke University (15) · Geisinger Clinic (15) · Stanford University (12) · University of North Carolina, Chapel Hill (10) · University of Alabama at Birmingham (10) · University of California, San Francisco (9) · Hadassah Medical Organization (8)

Coming up

1phase 3 study under way
50studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest

Who these studies take

Of the 93 Health Behavior studies recruiting now, 39 (42%) set no upper age limit and 37 (40%) stop at 75 or younger. 25 (27%) take children under 18. 13 (14%) are for women only and 1 (1%) for men only; 58 (62%) take healthy volunteers.

Recruiting studies that take each age, of 93
AgeWomenMen
1015 (16%)14 (15%)
1864 (69%)57 (61%)
3068 (73%)57 (61%)
4071 (76%)59 (63%)
5069 (74%)60 (65%)
6566 (71%)58 (62%)
7558 (62%)51 (55%)
8551 (55%)45 (48%)

Across all 967 studies, recruiting or not: 45% stop at 75 or younger and 38% at 65; 28% take children; 11% are for women only and 3% for men only; 67% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Health Behavior studies take

Of 585 interventional studies with no phase under Health Behavior, half reached primary completion within 15 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase15 mo5–32 · 585 studies—15 mo5–33 · 567 studies
Observational22 mo4–52 · 54 studies—25 mo5–55 · 52 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Started recruiting1

Results posted2

Newly registered5

Studies

Recruiting first, then most recently updated. Showing 50 of 967. Browse all 967 → or search them.