A Semi-Parametric Test for Umbrella Ordering of Binary Response Probabilities at Unknown Peak

2018 ◽  
Vol 70 (1) ◽  
pp. 7-16
Author(s):  
Parthasarathi Chakrabarti ◽  
Uttam Bandyopadhyay
Keyword(s):  
Low Power ◽  
Prospective Study ◽  
Good Health ◽  
Binary Response ◽  
Population Means ◽  
Parametric Test ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Umbrella Alternative ◽  
Unknown Peak

The Terpstra and Magel 1 multiple comparison test (referred to as the [Formula: see text] test) for umbrella alternative at unknown peak occasionally identifies false concavity in the population means. This work provides a semi-parametric test for umbrella ordering of chances of good health (free from disease) with unknown peak in a [Formula: see text] prospective study. The proposed test, a modified version of the [Formula: see text] test, determines true concavity in chances of good health more powerfully and shows low power against false concavity as compared to that of the [Formula: see text] test.

scholarly journals Nurses' leadership styles in the icu: association with personal and professional profile and workload

2009 ◽  
Vol 17 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Alexandre Pazetto Balsanelli ◽  
Isabel Cristina Kowal Olm Cunha ◽  
Iveth Yamaguchi Whitaker
Keyword(s):  
Leadership Styles ◽  
Leadership Style ◽  
T Test ◽  
Descriptive Statistics ◽  
Nursing Workload ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Professional Profile ◽  
Student’S T ◽  
Student’S T Test

This study aims to explore the association between nurses' leadership styles and personal and professional nursing profile and workload. The sample consisted of seven nurses and seven nursing technicians who were grouped into pairs. At the end of three months, nurses were queried regarding what leadership style would be adopted when the nursing technician under their evaluation delivered care to patients admitted to the ICU. Relevant data was analyzed by applying descriptive statistics, Tukey's multiple comparison test and Student's t-test (p< 0.05). Nursing workload reached 80.1% on average. The personal and professional profile variables did not show any relation with the leadership styles chosen by nurses (p>0.05). The determine, persuade, and share leadership styles prevailed. However, whenever the nursing workload peaked, the determine and persuade styles were used (p<0.05).

scholarly journals Time perception and age

2016 ◽  
Vol 74 (4) ◽  
pp. 299-302 ◽  
Author(s):  
Vanessa Fernanda Moreira Ferreira ◽  
Gabriel Pina Paiva ◽  
Natália Prando ◽  
Carla Renata Graça ◽  
João Aris Kouyoumdjian
Keyword(s):  
Time Perception ◽  
Healthy Subjects ◽  
Age Groups ◽  
Internal Clock ◽  
Time Interval ◽  
Comparison Test ◽  
Clock System ◽  
Multiple Comparison Test ◽  
The Common ◽  
Bonferroni Multiple Comparison Test

ABSTRACT Our internal clock system is predominantly dopaminergic, but memory is predominantly cholinergic. Here, we examined the common sensibility encapsulated in the statement: “time goes faster as we get older”. Objective To measure a 2 min time interval, counted mentally in subjects of different age groups. Method 233 healthy subjects (129 women) were divided into three age groups: G1, 15-29 years; G2, 30-49 years; and G3, 50-89 years. Subjects were asked to close their eyes and mentally count the passing of 120 s. Results The elapsed times were: G1, mean = 114.9 ± 35 s; G2, mean = 96.0 ± 34.3 s; G3, mean = 86.6 ± 34.9 s. The ANOVA-Bonferroni multiple comparison test showed that G3 and G1 results were significantly different (P < 0.001). Conclusion Mental calculations of 120 s were shortened by an average of 24.6% (28.3 s) in individuals over age 50 years compared to individuals under age 30 years.

The Tukey multiple comparison test: 1953-1976.

1977 ◽  
Vol 84 (5) ◽  
pp. 1050-1056 ◽  
Author(s):  
H. J. Keselman ◽  
Joanne C. Rogan
Keyword(s):  
Multiple Comparison ◽  
Comparison Test ◽  
Multiple Comparison Test

Effect of Various Sensory Inputs on Prose Learning

1979 ◽  
Vol 48 (3) ◽  
pp. 843-847
Author(s):  
Thomas N. Dorsel
Keyword(s):  
Multivariate Analysis ◽  
Principal Result ◽  
Visual Input ◽  
Analysis Of Covariance ◽  
Auditory Input ◽  
Sensory Inputs ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Significant Difference ◽  
Prose Learning

A pretest-posttest design was used to determine the effects of auditory input, visual input, auditory-visual input, and no input on prose learning. The principal result of a multivariate analysis of covariance combined with a multiple-comparison test was a significant difference in favor of auditory input. This difference seemed to be confined to definition items which were the substance of the input as opposed to application items which were not involved explicitly in the input. A difference between the present study and earlier ones was that a shorter exposure of stimuli was employed in the present study, which may have led to results favoring auditory input in contrast to earlier findings favoring visual input.

scholarly journals 1391. Body Mass Index and Leptin Levels at Different Stages of the Tuberculosis Spectrum

2021 ◽  
Vol 8 (Supplement_1) ◽  
pp. S780-S781
Author(s):  
Wajih Askar ◽  
Manuel G Feria ◽  
Shinsmon Jose ◽  
Rajat Madan ◽  
Moises A Huaman
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Multiple Comparison ◽  
P Value ◽  
Energy Regulation ◽  
Immune Functions ◽  
Comparison Test ◽  
Tb Treatment ◽  
Multiple Comparison Test ◽  
Plasma Leptin

Abstract Background Leptin is an adipose tissue-derived cytokine that plays a role in energy regulation and immune functions. High leptin levels and obesity have been associated with decreased risk of developing active TB. We aimed to characterize the association between body mass index (BMI) and leptin levels in patients at different stages of tuberculosis (TB). Methods Data from a cross-sectional cardiovascular risk study of 40 to 70 years old individuals enrolled in Lima, Peru, and Cincinnati, US, were analyzed. Four categories based on TB and treatment status were defined: no TB infection (QuantiFERON-TB test negative; n= 31), latent TB infection (LTBI; QuantiFERON-TB test positive; n= 43), active TB on treatment (in the continuation TB treatment phase; n= 30), and post-TB (within one year of TB treatment completion; n=16). BMI and plasma leptin levels were compared among the four groups using the Kruskal-Wallis test, followed by Dunn’s multiple comparison test if differences were found in the Kruskal-Wallis test. Multivariate ordered logistic regression models were used to assess factors associated with leptin levels, adjusted for potential confounders. Results The median age was 53 years, and 51% were female. BMI was different between study groups (p&lt; 0.01), with LTBI individuals having the highest BMI compared to other groups; see Figure 1A. Leptin levels were marginally low in the group with active TB on treatment, but no significant differences were found between groups (p=0.44; see Figure 1B). In multivariate analysis, leptin was associated with female sex (OR 23, 95%CI, 9-58), BMI (OR, 1.5, 95%CI, 1.2-1.7), and coronary plaque ≥25% stenosis (OR, 0.29, 95%CI, 0.08-0.99). Body mass index (BMI) and plasma leptin levels in participants with negative QuantiFERON-TB test (QFN-), latent tuberculosis infection (LTBI), active tuberculosis on treatment (ATBT), and post-TB treatment (TB-treated). Significance was determined using the Kruskal-Wallis test, followed by Dunn’s multiple comparison test if the Kruskal- Wallis test p-value was &lt;0.05. Conclusion LTBI individuals had a higher BMI compared to persons with active TB on treatment and post-TB. Higher leptin levels were associated with higher BMI, but we found no association between leptin and TB status in our cohort. Disclosures All Authors: No reported disclosures

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