Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Projectile Motion: Example01:18

Projectile Motion: Example

14.4K
The theory of projectile motion is very useful for players of several sports to improve their performance. For example, a javelin thrower needs to throw their javelin in such a way that it travels as far as possible. The javelin thrower takes a short run-up to increase the initial speed of the javelin. The range of a projectile is at its maximum at a 45° angle so javelin throwers try to angle their throw as close to 45° as possible.
When we speak of the range (R) of a projectile on...
14.4K
Hypothesis Test for Test of Independence01:16

Hypothesis Test for Test of Independence

8.4K
The test of independence is a chi-square-based test used to determine whether two variables or factors are independent or dependent. This hypothesis test is used to examine the independence of the variables. One can construct two qualitative survey questions or experiments based on the variables in a contingency table. The goal is to see if the two variables are unrelated (independent) or related (dependent). The null and alternative hypotheses for this test are:
H0: The two variables (factors)...
8.4K
Survey Safety01:28

Survey Safety

471
Surveying near highways, rough terrain, or power lines involves significant risks. Working along highways is particularly dangerous and requires the use of warning signs and flagmen. It is safest to avoid working directly on roads and use offsets whenever possible. When highway work is unavoidable, it must follow all safety guidelines. Surveyors should wear bright clothing, such as orange reflective vests, to ensure visibility to motorists, coworkers, and hunters. In construction zones, wearing...
471
Diagnostic and Statistical Manual of Mental Disorders (DSM)01:27

Diagnostic and Statistical Manual of Mental Disorders (DSM)

1.7K
The Diagnostic and Statistical Manual of Mental Disorders (DSM) serves as the primary classification system for mental health disorders, providing standardized diagnostic criteria for clinicians and researchers. First published by the American Psychiatric Association (APA) in 1952, the DSM has undergone several revisions to reflect evolving psychiatric understanding. The fifth edition, DSM-5, released in 2013, introduced key updates that expanded diagnostic categories and modified diagnostic...
1.7K
Drug Regulation01:25

Drug Regulation

3.3K
Drug regulation encompasses the management of drug usage by evaluating its safety and efficacy through assessments conducted by regulatory authorities. Regrettably, the history of drug regulation is marred by several catastrophic events. One such incident is the Elixir Sulfanilamide tragedy, in which the toxic compound diethyl glycol was included in a sweet-tasting medication, leading to numerous fatalities. This event prompted the enactment of the Food, Drug, and Cosmetic Act in 1938. Under...
3.3K
Nuclear Fission02:50

Nuclear Fission

12.9K
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large...
12.9K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Pediatric Trauma Center Utilization for Children Transported by Emergency Medical Services.

Prehospital emergency care·2026
Same author

Morphologically tunable mycelium chips for physical reservoir computing.

Scientific reports·2026
Same author

Factors Associated With Use of Procedural Sedation in Pediatric Facial Laceration Repair in the Emergency Department: A Retrospective Cross-Sectional Study.

Pediatric emergency care·2026
Same author

The legacy of slavery and Black-White disparities in homicide by county-United States, 2000-2020.

Public health·2026
Same author

Racial Equity in Facial Laceration Repair: Evaluating a Pediatric Plastic Surgery Consult Guideline.

American journal of preventive medicine·2026
Same author

Building consensus in pediatric dermatology research.

The Journal of investigative dermatology·2026
Same journal

Suicidal Ideation and the Wider Value of Structured Care in Major Depression-Before the Near Miss.

JAMA network open·2026
Same journal

Interval Salpingectomy-Can We Have It All?

JAMA network open·2026
Same journal

What Patients Want From AI-Drafted Portal Messages-Empathy in the In-Basket.

JAMA network open·2026
Same journal

Hospital-Based Psychosocial Case Management and Suicide Prevention in South Korea: A Randomized Clinical Trial.

JAMA network open·2026
Same journal

Incidence of Recurrent Invasive Pneumococcal Disease in Canada.

JAMA network open·2026
Same journal

Opioid Use and Pain Resolution for Acute Pain Among Opioid-Naive Patients.

JAMA network open·2026
See all related articles

Related Experiment Video

Updated: Apr 2, 2026

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue
07:09

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue

Published on: May 9, 2019

8.5K

State Gun Laws and Firearm Suicide Rates.

Maple Goh1, Eric W Fleegler2, Michael Siegel1

  • 1Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Massachusetts.

JAMA Network Open
|April 1, 2026
PubMed
Summary
This summary is machine-generated.

State firearm laws, including handgun permits, waiting periods, and concealed carry licenses, are associated with significant reductions in firearm suicide rates. These laws show a cumulative effect, further lowering suicide rates when implemented together.

More Related Videos

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
06:55

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index

Published on: January 8, 2020

15.5K
Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice
07:15

Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice

Published on: March 15, 2024

3.0K

Related Experiment Videos

Last Updated: Apr 2, 2026

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue
07:09

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue

Published on: May 9, 2019

8.5K
Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
06:55

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index

Published on: January 8, 2020

15.5K
Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice
07:15

Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice

Published on: March 15, 2024

3.0K

Area of Science:

  • Public Health
  • Criminology
  • Epidemiology

Background:

  • Numerous states have enacted firearm laws to limit access for high-risk individuals.
  • Evidence on the effectiveness of these laws in reducing firearm suicides is mixed due to methodological limitations.

Purpose of the Study:

  • To examine the association between state firearm laws and firearm-related suicide deaths across all 50 US states from 1976 to 2024.

Main Methods:

  • Cross-sectional study using difference-in-differences fixed-effects panel regression with Prais-Winsten correction.
  • Annual state-level data on firearm-related suicides from 1976-2024 obtained from CDC WISQARS.
  • Six firearm laws were analyzed with a 2-year lag: handgun permits, waiting periods, concealed carry permits, minimum age, extreme risk protection orders, and dealer permits.

Main Results:

  • Handgun permit laws, waiting periods, and concealed carry licenses were significantly associated with decreased firearm suicide rates (e.g., waiting periods: -12.5%).
  • These laws were not associated with nonfirearm suicide rates, serving as a negative control.
  • States implementing 1, 2, or all 3 of these laws (handgun permits, waiting periods, concealed carry permits) showed progressively lower firearm suicide rates.

Conclusions:

  • Permit-to-purchase requirements for handguns, waiting periods, and concealed carry licenses are independently and cumulatively linked to lower firearm suicide rates.
  • These findings highlight the potential of specific firearm regulations in suicide prevention efforts.
  • The study underscores the importance of robust data and methodological approaches in evaluating firearm policy impacts.