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

Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

6.6K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
6.6K
Sample Size Calculation01:19

Sample Size Calculation

4.9K
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...
4.9K
One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation01:24

One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation

819
This lesson introduces two critical methods in pharmacokinetics, the Wagner-Nelson and Loo-Riegelman methods, used for estimating the absorption rate constant (ka) for drugs administered via non-intravenous routes. The Wagner-Nelson method relates ka to the plasma concentration derived from the slope of a semilog percent unabsorbed time plot. However, it is limited to drugs with one-compartment kinetics and can be impacted by factors like gastrointestinal motility or enzymatic degradation.
On...
819
Estimating Population Standard Deviation01:26

Estimating Population Standard Deviation

3.1K
When the population standard deviation is unknown and the sample size is large, the sample standard deviation s is commonly used as a point estimate of σ. However, it can sometimes under or overestimate the population standard deviation. To overcome this drawback, confidence intervals are determined to estimate population parameters and eliminate any calculation bias accurately. However, this only applies to random samples from normally distributed populations. Knowing the sample mean and...
3.1K
One-Way ANOVA: Unequal Sample Sizes01:15

One-Way ANOVA: Unequal Sample Sizes

6.0K
One-way ANOVA can be performed on three or more samples of unequal sizes. However, calculations get complicated when sample sizes are not always the same. So, while performing ANOVA with unequal samples size, the following equation is used:
6.0K
What are Estimates?01:06

What are Estimates?

6.6K
It isn't easy to measure a parameter such as the mean height or the mean weight of a population. So, we draw samples from the population and calculate the mean height or mean weight of the individuals in the sample. This sample data acts as a representative measure of the population parameter. These sample statistics are known as estimates. 
The estimate for the mean of a sample is denoted by ͞x, whereas the mean of the population is designated as μ. Further, parameters such...
6.6K

You might also read

Related Articles

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

Sort by
Same author

Reinfection dynamics of owned dogs with Echinococcus granulosus sensu lato in endemic rural areas of central Iran: Implications for cystic echinococcosis control.

PLoS neglected tropical diseases·2026
Same author

Unmet needs for opioid agonist therapy in Iranian prisons: a cross-sectional study.

International journal of prison health·2026
Same author

How Visible is the Sex Work in Iran?

Medical journal of the Islamic Republic of Iran·2026
Same author

A DEMATEL-Based prioritization of key factors contributing to telemedicine development.

Journal of education and health promotion·2026
Same author

Development of an early prediction model for endometriosis risk: the simplified adolescent factors for endometriosis (SAFE) score.

EClinicalMedicine·2026
Same author

A decade of change: trends in drug and alcohol use in Iran (2010-2019).

BMC public health·2026
Same journal

Peptidomics in the Spotlight: Advanced Sample Treatment Techniques and Analytical Insights.

Advances in experimental medicine and biology·2026
Same journal

Methods for the Investigation of Protein-Ligands Interactions.

Advances in experimental medicine and biology·2026
Same journal

Sample Preparation Strategies for Microbial Cell Surface Proteomics: Integrating Shaving and Shotgun Approaches.

Advances in experimental medicine and biology·2026
Same journal

Proteomic Sample Preparation for the Petroleum Industry: A Biocorrosion Case Study.

Advances in experimental medicine and biology·2026
Same journal

Proteomic and Functional Comparison of Extracellular Vesicles from Wild-Type and Lyn-Deficient Stromal Cells.

Advances in experimental medicine and biology·2026
Same journal

Proteomic Analysis of Histone Sequence Variants and Post-translationally Modified Forms.

Advances in experimental medicine and biology·2026
See all related articles

Related Experiment Video

Updated: Oct 26, 2025

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

7.7K

Review of Size Estimation Methods.

Mohammad Reza Baneshi1,2, Azam Rastegari1, Ali Akbar Haghdoost3

  • 1Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.

Advances in Experimental Medicine and Biology
|August 2, 2021
PubMed
Summary
This summary is machine-generated.

Accurate measurement of the global human immunodeficiency virus (HIV) burden is crucial. Precise HIV impact and magnitude estimates are essential for effective prevention, care, and treatment strategies worldwide.

More Related Videos

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

2.6K
An Innovative Method for Exosome Quantification and Size Measurement
11:38

An Innovative Method for Exosome Quantification and Size Measurement

Published on: January 17, 2015

31.1K

Related Experiment Videos

Last Updated: Oct 26, 2025

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

7.7K
Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

2.6K
An Innovative Method for Exosome Quantification and Size Measurement
11:38

An Innovative Method for Exosome Quantification and Size Measurement

Published on: January 17, 2015

31.1K

Area of Science:

  • Epidemiology
  • Public Health
  • Global Health

Background:

  • Understanding the global burden of human immunodeficiency virus (HIV) presents ongoing challenges.
  • Effective HIV prevention, care, and treatment programs rely on precise epidemiological data.

Purpose of the Study:

  • To highlight the critical need for accurate measurement of HIV burden globally.
  • To emphasize the necessity of precise HIV impact and magnitude estimates for subpopulations.

Main Methods:

  • This study is a review and synthesis of existing literature on HIV burden estimation.
  • Analysis of challenges in current HIV surveillance and data collection methods.

Main Results:

  • Significant challenges persist in accurately measuring the global HIV burden.
  • Lack of precise subpopulation data hinders effective program design and evaluation.

Conclusions:

  • Precise estimation of HIV impact and magnitude among diverse subpopulations is fundamental.
  • Addressing these measurement challenges is vital for advancing global HIV control efforts.