Victor Oguoma

7 Questions 17 Answers 0 Followers

Questions related from Victor Oguoma

How do I resolve an error with running ROC analysis using R Commander?

I tried to run a ROC analysis using the R commander, but I keep getting the following error message: RcmdrMsg: [12] WARNING: Warning in sink(type = "output") : no sink to removeRcmdrMsg: [13]...

01 January 2016 2,993 3 View

Is coefficient of multiple regression analysis or p-values better for my problem?

I carried out an analysis to determine superiority of predictive potential of two methods (A and B) to cardio-metabolic risks. Method 'A' gave coefficient of multiple regression of 0.427 and...

01 January 2015 5,419 16 View

What are the methods to determine cut-off points from an ROC Analysis?

I carried out a ROC analysis using a statistical software XLSTAT, which normally uses Maximum sum of Sensitivity and Specificity as the cut-off point. However, in the attached file, which is one...

11 November 2014 5,713 5 View

Can anyone help with advise on the statistical tools appropriate for analysis of data collected through the WHO STEPS Questionnaire?

I have data collected using the WHO STEPS questionnaire but having some challenges with getting it into an appropriate statistical tool for analysis. Anyone got some idea?

07 July 2014 9,686 11 View

Journal Citation Report Impact Factor and Global Impact Factor: which one supersedes?

Can someone advise whether the impact factor and impact factor assessing body matters, especially in considering ones research output towards a grant award. More than a couple of journal impact...

05 May 2014 9,576 7 View

Can anyone help with knowledge, attitude and practice (KAP) in diabetes?

In developing a questionnaire for KAP studies on diabetes in a community setting, what are the specific open/close ended questions that could be asked to ascertain their KAP?

03 March 2014 6,713 5 View

How can I determine/assess the quality of published articles in terms of age and population they studied?

I am writing up a systematic review article and wish to know any method I can use to analyse/assess statistically the quality of population recruited by the studies in my review.

03 March 2014 9,390 4 View