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

Numerical Calculations01:24

Numerical Calculations

1.3K
In engineering applications, the representation of the numerical value is critical. Presenting or reporting the answer is one of the essential parts of engineering practices. Numerical calculations are performed using handheld calculators or computers since numerically accurate answers are always preferred.
The solution to a problem is obtained using different methods. While manually solving algebraic symbols is one of the most common methods, the graphical method is often preferred. Computers...
1.3K
Sample Size Calculation01:19

Sample Size Calculation

7.0K
Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units, observations, or groups (in some cases) used to get the data to estimate a population parameter. As the name suggests, the sample size is that of the sample drawn from the population and differs from the population size.
The sample size for the given experiment or sampling effort is fundamental to any study design. Sample size decides the number of...
7.0K
Significant Figures in Calculations00:58

Significant Figures in Calculations

21.2K
Uncertainty in measurements can be avoided by reporting the results of a calculation with the correct number of significant figures. This can be determined by the following rules for rounding numbers:
21.2K
Rules for Significant Figures01:44

Rules for Significant Figures

42.3K
In any measurement, the precision of the measuring tool is an essential factor. An ordinary ruler, for example, can measure length to the closest millimeter; a caliper, on the other hand, can measure length to the nearest 0.01 mm. As a result, the caliper is a more precise measurement tool because it can measure extremely minute changes in length. The measurements will be more accurate if the measuring tool is more precise.
It should be emphasized that when we represent measured values, the...
42.3K
Transport Number01:31

Transport Number

192
The transport number is the fraction of the total current carried by an ion in an electrolyte solution. It is defined as the ratio of the current carried by a specific ion to the total current flowing through the solution. The transport number, t, is central to understanding ionic mobility, which describes how fast an ion moves under the influence of an electric field. This link connects the physical behavior of ions in solution to the chemical processes that occur during electrochemical...
192
Conservation of Declining Populations02:07

Conservation of Declining Populations

13.7K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
13.7K

You might also read

Related Articles

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

Sort by
Same author

Population-Level Resources and Costs Associated with Low-Risk Prostate Cancer Patients on Active Surveillance.

Cancers·2026
Same author

Reference Values for Myocardial Strain by Cardiac Magnetic Resonance Feature Tracking: Insights From Healthy Volunteers and Heart Failure Patients Using Caas MR.

Reviews in cardiovascular medicine·2026
Same author

Reframing early health technology assessment through a lifecycle lens: Commentary on "defining early health technology assessment: building consensus using Delphi technique".

International journal of technology assessment in health care·2025
Same author

Using real-world, population-level data to assess the uptake of active surveillance for low-grade prostate cancer before and after the release of clinical guidelines.

Canadian Urological Association journal = Journal de l'Association des urologues du Canada·2025
Same author

Update to the PRISMA guidelines for network meta-analyses and scoping reviews and development of guidelines for rapid reviews: a scoping review protocol.

JBI evidence synthesis·2025
Same author

Updated breast cancer costs for women by disease stage and phase of care using population-based databases.

Health reports·2024
Same journal

Newsletter Spring 2026: Clinician Investigator Trainee Association of Canada (CITAC).

Clinical and investigative medicine. Medecine clinique et experimentale·2026
Same journal

A study of suicide risk and prognostic characteristics in patients with osteosarcoma.

Clinical and investigative medicine. Medecine clinique et experimentale·2026
Same journal

The expression and mechanism of action of MicroRNA-210 in preeclampsia.

Clinical and investigative medicine. Medecine clinique et experimentale·2026
Same journal

Risk assessment of intra-operative hemodynamic instability in patients with pheochromocytoma.

Clinical and investigative medicine. Medecine clinique et experimentale·2026
Same journal

Development and validation of a deep vein thrombosis risk nomogram for post-operative complications in prostate cancer patients.

Clinical and investigative medicine. Medecine clinique et experimentale·2026
Same journal

Analysis of the impact of SARS-CoV-2 infection on immune function and metabolic changes in college students.

Clinical and investigative medicine. Medecine clinique et experimentale·2026
See all related articles

Related Experiment Video

Updated: Apr 17, 2026

Author Spotlight: Enhancing Donor Heart Preservation Through Isolated Rat Heart Perfusion Studies
06:56

Author Spotlight: Enhancing Donor Heart Preservation Through Isolated Rat Heart Perfusion Studies

Published on: October 4, 2024

1.1K

Number Needed To… $ave?

Graeme M Rocker1, Jennifer Y Verma, Jillian Demmons

  • 1. gmrocker@dal.ca.

Clinical and Investigative Medicine. Medecine Clinique Et Experimentale
|February 10, 2015
PubMed
Summary
This summary is machine-generated.

A new metric, the Number Needed to Save (NN$), estimates healthcare cost-savings from interventions. For example, 26 patients completing a program could save $100,000 by reducing hospitalizations.

More Related Videos

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

13.6K
Embryo Microinjection and Transplantation Technique for Nasonia vitripennis Genome Manipulation
09:05

Embryo Microinjection and Transplantation Technique for Nasonia vitripennis Genome Manipulation

Published on: December 25, 2017

13.1K

Related Experiment Videos

Last Updated: Apr 17, 2026

Author Spotlight: Enhancing Donor Heart Preservation Through Isolated Rat Heart Perfusion Studies
06:56

Author Spotlight: Enhancing Donor Heart Preservation Through Isolated Rat Heart Perfusion Studies

Published on: October 4, 2024

1.1K
Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

13.6K
Embryo Microinjection and Transplantation Technique for Nasonia vitripennis Genome Manipulation
09:05

Embryo Microinjection and Transplantation Technique for Nasonia vitripennis Genome Manipulation

Published on: December 25, 2017

13.1K

Area of Science:

  • Health economics
  • Health services research
  • Healthcare management

Background:

  • The Number Needed to Treat (NNT) is a standard metric for evaluating therapeutic interventions.
  • There is a need for systems-level metrics to assess the economic impact of healthcare programs.

Purpose of the Study:

  • To introduce and explore the concept of the 'Number Needed to Save' (NN$) metric.
  • To adapt the NNT concept for estimating potential cost-savings to the health system from program implementation.

Main Methods:

  • Utilized outcomes from the INSPIRED COPD Outreach Program.
  • Calculated the NN$ based on avoided hospital bed days and associated healthcare expenditures.

Main Results:

  • 26 patients completing the INSPIRED COPD Outreach Program were associated with avoiding $100,000 in healthcare expenditures.
  • The NN$ metric quantifies resource redirection rather than direct cost savings.

Conclusions:

  • The proposed NN$ metric offers a novel approach to evaluating the economic impact of healthcare programs.
  • NN$ could inform system-level resource allocation decisions, similar to how NNT informs individual treatment choices.