Wednesday, October 22, 2014

Primer in statistics part 2

This is the second part of a two part series.

First, a guide in selecting the proper
statistical tests based on the research question will be laid out in
text and with a table so that researchers choose the univariable
statistical test by answering five simple questions.

Second, the
importance of utilizing repeated measures analysis will be illustrated.
This is a key component of data analysis as in many dental studies,
observations are considered repeated in a single patient (several teeth
are measured in a single patient).

Third, concepts of confounding and
the use of regression analysis are explained by going over a famous
observational cohort study.

Lastly, the use of proper agreement analysis
vs. correlation for study of agreement will be discussed to avoid a
common pitfall in dental research.

Primer of statistics in dental research: P... [J Prosthodont Res. 2014] - PubMed - NCBI

Primer in statistics part 1

This series of 2 articles aim to introduce dental researchers to 9 essential topics in statistics to conduct EBD with intuitive examples. The part I of the series includes the first 5 topics

(1) statistical graph

(2) how to deal with outliers

(3) p-value and confidence interval

(4) testing equivalence

(5) multiplicity adjustment.

Part II will follow to cover the remaining topics including

(6) selecting the proper statistical tests

(7) repeated measures analysis

(8) epidemiological consideration for causal association

(9) analysis of agreement.

J Prosthodont Res. 2014 Jan;58(1):11-6

Friday, October 17, 2014

Vikings and Superheroes: building a statistical network

The Icelandic sagas of the Norse people are thousand-year-old chronicles of brave deeds and timeless romances, but how true to Viking life were they? Researchers used a statistical network of associations between characters to find out. Read More