Intracluster correlation coefficients for the Brazilian Multicenter Study on Preterm Birth (EMIP): methodological and practical implications

Abstract Research purpose. The research aimed at identifying the main factors influencing export values in the region of Great Britain (GB) for the period of the last 30 years. Design / Methodology / Approach. In order to implement the investigation, the following tasks were intended: (1) To analyse scientific literature and mark out at least five non - dependent variables that impact export values of Great Britain. (2) Basing on findings, outlined in a scientific review, suggest or choose the methodology that is the most appropriate for this kind of tasks’ determination. (3) Collect the data for dependent and non-dependent variables (at least 30 samples). (4) Based on the presented methodology, determine the selected factors’ impact and make the statistical and economic analysis. The research was mainly done using quantitative analysis methods (descriptive, correlation, regressive analysis). Quantitative modelling and descriptive statistics methods are selected for investigation because they can suggest a different approach to analysing the factors influencing export values. Findings. Five non-dependent variables were marked out as factors influencing the export values in the selected region: gross domestic product (GDP); the number of employees in the region; amounts of cargo transportation; average salary in the region and labour costs. Calculation of the correlation coefficients showed that all independent variables were statistically significant. There is a very strong relationship between export values and GDP, employment, and labour costs. Originality / Value / Practical implications. The findings of this research can be applied in order to evaluate and determine the economic impact of the GB processes on the entire world, as Britain’s export values are among the top ten in the world. It is important to emphasise that the deeper analysis of the influencing factors of the volume of export in Great Britain showed an interrelation of these factors. So further investigation of this factor’s impact is essential.

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The Role of Anemia in Term and Preterm Pregnancies: Evidence from the Brazilian Multicenter Study on Preterm Birth (EMIP)

10.33696/gynaecology.2.018 ◽

2021 ◽

Vol 2 (2) ◽

Keyword(s):

Preterm Birth ◽

Multicenter Study

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Multicenter Evaluation of Five Assays for Myoglobin Determination

Clinical Chemistry ◽

10.1093/clinchem/46.10.1631 ◽

2000 ◽

Vol 46 (10) ◽

pp. 1631-1637 ◽

Cited By ~ 11

Author(s):

Martina Zaninotto ◽

Franca Pagani ◽

Sara Altinier ◽

Paolo Amboni ◽

Roberto Bonora ◽

...

Keyword(s):

Clinical Practice ◽

Rheumatoid Factor ◽

Reference Values ◽

Multicenter Study ◽

Method Comparison ◽

Correlation Coefficients ◽

Analytical Performance ◽

Men And Women ◽

Reference Limits

Abstract Background: Lacking assay standardization, different myoglobin methods may produce results that differ significantly. Methods: A multicenter study was carried out to compare the analytical performance of five commercially available assays for myoglobin measurement. Linearity, imprecision, interferences, and method comparison were studied according to NCCLS guidelines, whereas reference values were determined following IFCC recommendations. Results: The BNA and Opus showed relatively high imprecision (all but one total CV >7.4%). Other assays showed lower CVs, but they varied among laboratories, particularly at a normal myoglobin concentration (Access, 6.0–11%; Hitachi, 3.8–5.8%; Stratus, 3.4–6.5%). Results were lower in anticoagulated samples on the Access, in heparin and citrate samples on the Stratus, and in citrate samples on the BNA and Opus, and increased in heparin and EDTA samples on the Hitachi. Use of separator gel produced results significantly lower (P <0.001) on the Hitachi and higher (P = 0.016) on the Opus. Bilirubin, turbidity, and hemoglobin had no effect on evaluated methods, but rheumatoid factor affected the Access. In method comparisons, high correlation coefficients (≥0.98) were obtained. The Stratus gave higher results; however, the Access and BNA gave the lowest. The following upper reference limits (μg/L) for men and women, respectively, were obtained: Access, 70 and 52; BNA, 51 and 49; Hitachi, 67 and 58; Opus, 80 and 50; and Stratus, 86 and 63. Conclusion: The possibility of high imprecision and marked disagreement among commercial myoglobin assays should be carefully considered in clinical practice.

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A study on comparative colour fading in daylight and xenon arc lamp

Research Journal of Textile and Apparel ◽

10.1108/rjta-05-2018-0037 ◽

2019 ◽

Vol 23 (1) ◽

pp. 2-17

Author(s):

Asim Kumar Roy Choudhury ◽

Biswapati Chatterjee

Keyword(s):

Design Methodology ◽

Correlation Coefficients ◽

Social Implications ◽

Direct Dyes ◽

Light Fastness ◽

Content Type ◽

Different Depths ◽

Experimental Findings ◽

High Repeatability ◽

Practical Implications

Purpose The purpose of this paper is to compare light fastness assessments by exposure of fabric dyes with various dyes in daylight and an artificial xenon arc lamp. Design/methodology/approach Cotton fabric dyed with 66 reactive, vat, azoic and direct dyes dyed in different depths were exposed to daylight and Xenon arc lamp for assessment of light fastness by standard methods. The light fastness rating and fading hours by the two methods were analysed and compared statistically. Findings The correlation between the corresponding light fastness rating (LFR) measured in Xenotest and daylight is quite high (0.93). The logarithmic correlation coefficients between fading hour (FH) and LFR in Xenotest and daylight are 0.95 and 0.88, respectively. For Xenotest, the assessed LFRs are same as those predicted from geometric progression up to LFR of 5.5, and thereafter, the former is higher. On the other hand, in the case of daylight, the assessed LFR is lower. Assessments for three successive seasons showed high repeatability in case of Xenotest and moderate repeatability in case of daylight. Assessments for three successive seasons showed high repeatability in case of Xenotest and moderate repeatability in case of daylight. Research limitations/implications The exposure conditions in daylight cannot be controlled or standardised, whereas the exposure in Xenon arc lamp in the accelerated fading instrument can be strictly controlled. These differences in exposure control may affect the repeatability of experimental findings. Practical implications Inconsistent ratings may be because of little deterioration of samples during storage, as well as seasonal variation of daylight. Social implications There are no direct social implications. Originality/value The researches on the comparison of the two light fastness assessment methods have not been reported in any recent publication to the best our knowledge.

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