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2015 ; 4
(ä): 633
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
StatXFinder: a web-based self-directed tool that provides appropriate statistical
test selection for biomedical researchers in their scientific studies
#MMPMID26543767
Suner A
; Karakülah G
; Ko?aner Ö
; Dicle O
Springerplus
2015[]; 4
(ä): 633
PMID26543767
show ga
The improper use of statistical methods is common in analyzing and interpreting
research data in biological and medical sciences. The objective of this study was
to develop a decision support tool encompassing the commonly used statistical
tests in biomedical research by combining and updating the present decision trees
for appropriate statistical test selection. First, the decision trees in
textbooks, published articles, and online resources were scrutinized, and a more
comprehensive unified one was devised via the integration of 10 distinct decision
trees. The questions also in the decision steps were revised by simplifying and
enriching of the questions with examples. Then, our decision tree was implemented
into the web environment and the tool titled StatXFinder was developed. Finally,
usability and satisfaction questionnaires were applied to the users of the tool,
and StatXFinder was reorganized in line with the feedback obtained from these
questionnaires. StatXFinder provides users with decision support in the selection
of 85 distinct parametric and non-parametric statistical tests by directing 44
different yes-no questions. The accuracy rate of the statistical test
recommendations obtained by 36 participants, with the cases applied, were 83.3 %
for "difficult" tests, and 88.9 % for "easy" tests. The mean system usability
score of the tool was found 87.43 ± 10.01 (minimum: 70-maximum: 100). A
statistically significant difference could not be seen between total system
usability score and participants' attributes (p value >0.05). The User
Satisfaction Questionnaire showed that 97.2 % of the participants appreciated the
tool, and almost all of the participants (35 of 36) thought of recommending the
tool to the others. In conclusion, StatXFinder, can be utilized as an
instructional and guiding tool for biomedical researchers with limited statistics
knowledge. StatXFinder is freely available at
http://webb.deu.edu.tr/tb/statxfinder.