Articles Related to t test
A Data-Based Adjustment for Fisher Exact Test
Fisher exact test is one of most popularly used methods in modern data analyses. However, it is conservative because of discreteness. The mid-p method may reduce the conservativeness but it is defined by the factor 1/2, an extra term beyond data. This paper considers an adjustment defined by a data-based factor. The adjusted test is compared with other ten tests. Special attention is given to the comparison between the data-based factor and the factor 1/2. The standardized version of the adjusted test is asymptotically
standard normal.
Consistent Confidence Limits, P Values, and Power of the Non-Conservative, Size – α Modified Fisher exact Test
The classical Fisher exact test [1], which is unconditionally the uniformly most powerful unbiased (UMPU) test, requires randomization at the critical value(s) to be of size α. Obviously, one needs a non-randomized version of this. Rejecting the null only if the test-statistic’s outcome is more extreme than the critical values, reduces the actual size considerably. The modified Fisher exact test introduced in [2] additionally rejects the null when the test attains the critical value c(t) and the randomization probability γ(t) (that depend on the total number of successes T) exceeds a threshold γ0, which is determined such that, for all values of the nuisance parameter, the size of the unconditional modified test is smaller, but as close as possible to α. This greatly improves the size and power of the test as compared to, for example, the conservative nonrandomized Fisher exact test, while controlling the Type 1 error rate.
Blood Type Distribution in Patients Attending the Laboratory of Yalgado Ouedraogo University Hospital, in Ouagadougou, Burkina Faso
Determining erythrocyte antigens is a crucial and preventive procedure in case of any immunohematology accident.
Healthy and Unhealthy Dietary Patterns are related to Lipid Parameters in Patients with Type 2 Diabetes Mellitus
The effects of a single food or nutrient on disease may be insufficient and poor, but the cumulative effect is detectable. The purpose of this study is to determine the relationship between dietary patterns and lipid parameters in patients with type 2 diabetes.
Hemodynamic and Autonomic Reactivity to Mental and Physical Stress in Lean, Overweight and Obese Subjects
There could be progressive changes in hemodynamic and autonomic parameters causing cardiovascular damage from lean to morbid obesity. We aim to study resting and reactivity of hemodynamic and autonomic parameters to physical and mental stress in lean, overweight and obese subjects of the Oman Family Study (OFS).
Profile of Cytokines (IL-1β, TNF- α and IL-10) in Eyelid Tumors
Tissue cytokine levels (IL-1β, TNF-α and IL-10) have been utilized for screening, diagnosis, prognostication and treatment of tumors. The current study, therefore, purports to measure the levels of common cancer associated cytokines in histopathologically confirmed tissue samples of eyelid tumors.
Do Expression Profiles of Cytokines VEGF, TNF- α, IL-1β, IL-6 and IL-8 Correlate with Gallbladder Cancer?
Gallbladder carcinoma is a multifactorial disease with a complex interplay at molecular levels. Here we look at the expression of specific cytokines (TNF-α, IL-1β, IL-6, IL-8 and VEGF) in GBC patients to develop them as biomarkers of gallbladder cancer.
Missing Breakfast, Sleep and Exercise: Are You Skipping Out Years of Life
People who regularly have breakfast are a third less likely at risk, of being obese than those who are breakfast skippers. The study aims to find the relationship between breakfast and sleeping habits with adiposity among medical students.
Impact of Training Programme on Knowledge and Perception of Primary Health Care (PHC) Workers on Nutrition Component of Safe Motherhood Initiative in South-West Nigeria
One of the core components of Safe Motherhood Initiatives (SMI) is nutrition, yet only few studies have considered this adequately. The goal of this intervention study was to evaluate the effect of training programme on knowledge and perception of PHC health workers on nutrition components of SMIs.
Effects of Transfer Point Glucan #300 Supplementation on Children exposed to Passive Smoking - Placebo-driven Double-blind Clinical Trials
In this study, we focused on the effect of β-glucan supplementation of children with chronic respiratory problems. We measured the
levels of cortisol, salivary IgE and cotinine in 56 children and evaluated the effect of 30 day supplementation with 100 mg/day oral
dose of yeast-derived β-glucan. Our results showed strong decrease of cotinine and cortisol levels in saliva of β-glucan-supplemented
children.
Stature Estimation from the Anthropometric Measurements of Footprint in Iban Ethnics of East Malaysia by Regression Analysis
A person’s stature is an identifying characteristic that is often used in forensic investigation. Footprint is the one of the valuable physical evidence encountered in the crime scenes and examination of barefoot impressions is important especially in developing countries like India, Malaysia where majority of the rural population like to walk barefooted because of socio-economic and climatic reasons.
