Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Quartile

Quartile

Quartiles are numbers that separate the data into quarters. Quartiles may or may not be part of the data. To find the quartiles, first, find the median or second quartile. The first quartile, Q1, is the middle value of the lower half of the data, and the third quartile, Q3, is the middle value, or median, of the upper half of the data. To get the idea, consider the same data set:
1; 1; 2; 2; 4; 6; 6.8; 7.2; 8; 8.3; 9; 10; 10; 11.5
The median or second quartile is seven. The lower half of the...

Detection of Gross Error: The Q Test

Detection of Gross Error: The Q Test

When one or more data points appear far from the rest of the data, there is a need to determine whether they are outliers and whether they should be eliminated from the data set to ensure an accurate representation of the measured value. In many cases, outliers arise from gross errors (or human errors) and do not accurately reflect the underlying phenomenon. In some cases, however, these apparent outliers reflect true phenomenological differences. In these cases, we can use statistical methods...

Quantifying and Rejecting Outliers: The Grubbs Test

Quantifying and Rejecting Outliers: The Grubbs Test

Sometimes, a data set can have a recorded numerical observation that greatly deviates from the rest of the data. Assuming that the data is normally distributed, a statistical method called the Grubbs test can be used to determine whether the observation is truly an outlier. To perform a two-tailed Grubbs test, first, calculate the absolute difference between the outlier and the mean. Then, calculate the ratio between this difference and the standard deviation of the sample. This number is...

Intelligence

Intelligence

The term "intelligence" is complex because it refers to both behavior and individuals, and its interpretation varies across cultures. European Americans tend to link intelligence with reasoning and cognitive skills, while in Kenya, it is tied to responsible participation in family and social life. In Uganda, intelligence is seen as the ability to know the right actions and carry them out effectively, while the Iatmul people of Papua New Guinea associate it with the capacity to remember detailed...

Measures of Intelligence

Measures of Intelligence

Psychologists measure intelligence by using standardized tests that produce a score known as the intelligence quotient or IQ. To understand IQ tests, it's important to recognize the key principles behind their construction: validity, reliability, and standardization.
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this; it...

Cochran's Q Test

Cochran's Q Test

Cochran's Q Test is a nonparametric statistical test used to determine if there are potential differences in the outcomes of three or more related groups on a binary (yes/no) or dichotomous outcome. It is essentially an extension of the McNemar Test, which is limited to two related samples - Cochran's Q test can handle three or more related samples, making it more versatile in scenarios where subjects are measured under multiple conditions. The test statistic follows a Chi-Square distribution,...

You might also read

Related Articles

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

Sort by

Same author

The white lies of leadership: caring dishonesty?

Nursing administration quarterly·2008

Same author

Who wants to spend $1,000?

Nursing management·2004

Same author

Wise buys. Do you have what it takes to sway new product purchases?

Nursing management·2004

Same author

2 cents for products under $100.

Nursing management·2004

Same author

Data gathering and problem solving: the foundation for expert decision-making.

Patient care management·2002

Same author

Error as opportunity: new approaches for more effective leadership.

Patient care management·2002

Same journal

Nurses' uncertainty in gender-affirming care: Implications for nursing leadership and organizational practice.

Nursing management·2026

Same journal

Innovativeness: A strategic necessity.

Nursing management·2026

Same journal

Improvising through ambiguity: Jazz leadership principles for nurse leaders.

Nursing management·2026

Same journal

Active listening in nursing leadership: A critical analysis.

Nursing management·2026

Same journal

Find Your Best Fit: An innovative orientation model cultivating connection and commitment in new graduate nurses.

Nursing management·2026

Same journal

Accountability grids as a structural instrument for role clarity and professional governance in nursing.

Nursing management·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 9, 2026

Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Published on: November 14, 2017

What's your GPO IQ?

¹Kathy Malloch Associates, Glendale, Ariz., USA.

Nursing Management

|April 24, 2004

Summary

This summary is machine-generated.

Group purchasing organizations (GPOs) leverage collective buying power to reduce costs. However, flexibility remains, as off-contract purchases are still possible.

More Related Videos

A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile

A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile

Published on: November 3, 2018

Oral Health Assessment by Lay Personnel for Older Adults

Oral Health Assessment by Lay Personnel for Older Adults

Published on: February 2, 2020

Related Experiment Videos

Last Updated: Jun 9, 2026

Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Published on: November 14, 2017

A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile

A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile

Published on: November 3, 2018

Oral Health Assessment by Lay Personnel for Older Adults

Oral Health Assessment by Lay Personnel for Older Adults

Published on: February 2, 2020

Area of Science:

Health care administration
Supply chain management
Health economics

Background:

Group purchasing organizations (GPOs) are central to healthcare procurement.
GPOs negotiate contracts to achieve cost savings through volume purchasing.
Understanding the scope and limitations of GPO agreements is crucial for effective cost management.

Purpose of the Study:

To analyze the cost-control mechanisms of group purchasing organization agreements.
To examine the implications of purchasing flexibility within GPO frameworks.
To provide insights into optimizing procurement strategies in healthcare settings.

Main Methods:

Review of GPO contract structures and negotiation strategies.
Analysis of purchasing data to identify on-contract vs. off-contract spending.
Comparative cost analysis of GPO-negotiated prices versus market rates.

Main Results:

GPO agreements effectively reduce costs via aggregated purchasing power.
Significant cost savings are realized through GPO member negotiations.
Opportunities exist for off-contract purchasing, potentially impacting overall cost-efficiency.

Conclusions:

GPO agreements offer substantial cost-saving benefits in healthcare procurement.
Strategic utilization of GPO contracts, alongside judicious off-contract purchasing, can optimize supply chain expenditures.
Further research is warranted to quantify the financial impact of off-contract purchasing decisions.