Sentences with phrase «using t tests»

Sample descriptive for all variables in the total sample and in the DBD − and DBD + subgroups and their differences using t tests

Each comparison is tested for statistical significance using t tests and χ2 tests as applicable.

Differences by depression and GI quintiles were tested by using t tests for continuous variables.

Groups were compared using t tests, χ2 tests, and F tests.

We also used t tests to assess differences between dropouts and completers in pretreatment psychopathology: no significant differences were found for depression (BSI)(t46 =.78, P =.44), anxiety (BSI)(t46 =.84, P =.41), posttraumatic symptoms (IES - R)(t46 = − 1,077, P =.29), or WAI - S (t41 = −.639, P =.53).

Not exact matches

This paper examines the day of the week effect in the crypto currency market using a variety of statistical techniques (average analysis, Student's t - test, ANOVA, the Kruskal - Wallis test, and regression analysis with dummy variables) as well as a trading simulation approach.

To date Amarillo has tested 5 of the 19 known old workings at Lavras do Sul and 4 of these have returned significant gold values, including the Butia prospect 215,000 ounces of gold Indicated from 6.4 MT at 1.05 g / t Au, and 308,000 ounces of gold Inferred from 12.9 MT at 0.74 g / t Au using a 0.30 g / t cut - off grade.

Initial metallurgical tests used a conventional coarse gravity process to achieve 70 % gold recovery from Granada waste rock averaging 0.5 g / t, producing a 4.5 g / t gravity concentrate to be further processed at the mill.

We monitored the ten study streams during the dry (April & December), transition (July), and peak (October) rainfall seasons of 2013, and compared responses using t - tests.

The snacks were divided into subgroups based on product type (fruit drink snacks, licorice, non-dairy ices, ice creams and savories) and their caloric content per portion was compared with the caloric content of reference products derived from the Dutch Food Composition Database [13], using one - sample t - tests.

Only a CIR Blood Test (Carbon Isotope Ratio) can differentiate between Synthetic & Natural Testosterone & to give an example the difference between 400 NG / DL T - Level & 900 NG / DL is the difference between battling a strong man & a Gorilla & WADA labs do Not use CIR testing — USADA does use the CIR

A composite knowledge score, representing the percent correct of 21 knowledge questions, was calculated; preintervention and postintervention composite knowledge scores for each individual were compared using the paired t test.

Second, comparisons in milk waste data were studied using an unequal sample size, unequal variance t - test and the degrees of freedom for the test were calculated using the Welch - Satterthwait equation [21].

We estimated differences in resource use and costs with the independent samples t test procedure and differences in effects with odds ratios and weighted incidence rates from the cohort study.

Student's t, chi square, Fisher's exact, and Mann - Whitney tests were used where appropriate with P < or =.05 deemed significant.One hundred fifty - six women were randomized; three were excluded after randomization.

Mean values of T, adjusted for time of saliva collection and usual wake time (AM), were compared using paired t testsT, adjusted for time of saliva collection and usual wake time (AM), were compared using paired t testst tests.

The Student's t - test was used as this is a valid method to analyze the difference in treadmill times in 2 independent groups.

The 2 - tailed Student's t - test was used to assess the statistical significance of our results.

Continuous variables were analyzed using Student's t - test.

Data were entered and analyzed using SAS, BMDP, and Epi Info version 6.17 Statistical tests used to compare sociodemographic characteristics (Tables 1 and 2) included Student's t test, χ2 test, and Fisher's exact test as appropriate.18 Analyses of breastfeeding problems and frequency were examined using χ2 tests and Student's t test, respectively.

The so - called STEP trial, sponsored by pharmaceutical giant Merck & Co. and the federally funded HIV Vaccine Trials Network (HVTN), was the first to test the idea of stimulating the immune system's killer T cells to hunt for the virus more aggressively, in this case using a weakened form of the cold virus to carry three genes from HIV.

T o test whether BA can protect fruit from D. suzukii, Ray and his graduate student Christine Krause Pham conducted a series of experiments using two bowls of fresh, ripe blueberries — a preferred fruit of D. suzukii.

Methods used for conducting statistical tests (e.g., t - test, Wilcoxon signed rank test, Wald test of regression coefficient) and for constructing confidence intervals (e.g., normal - based 95 % CI: mean ± 2SD, likelihood ratio - based interval) should be clearly stated.

T - ray test Clough, an R.P.I. doctoral student in electrical, computer and systems engineering who hopes to complete his PhD within a year, has demonstrated a cost - effective technique for using sound waves to boost the effective distance of terahertz spectroscopy from less than a meter to several meters.

To test whether men can also choose the most fertile scents from a set of unknown women, a group of researchers conceived a study using smelly T - shirts.

Meanwhile, Sangamo is testing a therapy that uses an older genome editing technique to disrupt CCR5 in patients» CD4 + T - cells so that HIV is locked out.

In addition, the Student's t test was used to compare mean change of three indices from baseline in both treatment groups.

Using this test, the team found that genetically - intact HIV hides in specific subsets of CD4 + T - cells.

Fanta and his team used a commercially available test to analyze levels of the genes ERCC1 and TS in 41 patients with metastatic colorectal cancer.

High - sensitivity cardiac troponin T (hs - cTnT), a protein that can be measured via a blood test, is a biomarker of cardiovascular risk and could be approved in the United States for clinical use soon.

Supported by comparative control testing, in which the researchers induced inflammation using very similar antigens not matching the specific T - cell, they were able to prove that T - cells only migrate into tissue inflamed by their specific antigen.

The DKFZ researchers conducted this study in collaboration with Epiontis, a Berlin - based company that specializes in the epigenetic tests that were used to determine the ratio of the various T cell populations.

Subsequent tests revealed that the retrovirus used to ferry the corrective gene into the DNA of blood - making cells in the bone marrow had lodged in or near a gene that regulates T cells, possibly prompting their uncontrolled growth.

Using analysis of variance, t - tests, or chi - square tests as appropriate, we compared the clinical characteristics among exposure groups and among subjects with World Trade Center cough according to prognostic subgroups: those with predominantly upper - airway symptoms (29 subjects) or lower - airway symptoms (95 subjects) or those with bronchial responsiveness (249 subjects).

For in vitro experiments, t test or one - way ANOVA was used to calculate the P values.

So, in addition to a Student's t - test (which was originally performed) we plan to analyze the data using negative binomial regression.

Student's t test was used to compare genetically modified mice with their respective background control mice.

A cotton T - shirt manufactured and tested in 2050 may appear to be the same age as an artifact from the 11th century when dated using the radiocarbon method.

This will include testing the mechanism of action of different adjuvant and antigen formulations by measuring B - and T - cell responses and by using various functional assays (ELISA, FACS, cytokine profiles), transcriptomics and / or proteomics.

A within - subject design, statistical analysis using a Student's t - test, paired two - tailed distribution was used.

The HZI will develop a vaccination protocol for mucosal administration based on three novel strategies: (i) development and optimization of a vaccination protocol in which parenterally - primed T and B cells are subsequently pulled into the mucosa by the local delivery of the cognate antigen to the requested effector site, (ii) testing the co-administration of antigens with novel mucosal adjuvants using different mucosal immunisation routes and schedules, and (iii) testing various nanoparticles co-administered with different immunomodulators for their ability to generate both systemic and mucosal immune responses following transcutaneous / trans - follicular vaccination.

Last year, Marson and Schumann successfully used CRISPR to perform precise DNA sequence replacements in primary human T cells for the first time by prefabricating the CRISPR machinery in test tubes, then adding it to the freshly donated immune cells.

Microsoft Excel 2003 was used to perform statistical analysis and two - tailed Student's t - test for determining the p - value.

Unpaired student's t - test was also used to compare gene expression variation in siTRF2 silenced versus non silenced scrambled siRNA HCT116 cells in the presence of bleomycin sulfate.

Unpaired student's t - test was used to compare average sphere sizes of silenced and control cells.

Statistical analysis was performed using ANOVA and unpaired two - tailed t test with GraphPad Prism software (La Jolla, CA).

Data are shown as mean ± s.d. Statistics were performed using Student's t - test.

Data are shown as mean ± s.d. Statistics were performed using Student's t - test (a), one - way ANOVA (b) and Mann — Whitney U test (d, f).

T - tests were used to compare log - transformed antibody levels at each study time point.

For continuous variables that were normally distributed, we used Student's t test or the one - way analysis of variance.