little data challenges
TRANSCRIPT
Too much jogging may be as bad for you as not running at all, study suggests.The Independent March 19, 2015
The (Supposed) Dangers of Running Too MuchWhat the data says, and what it doesn’t.
Runner’s World Feb 3, 2015
Sedentary: 413 / 128 Light: 576 / 7Moderate: 262 / 8Strenuous: 40 / 2
dot plots by Meaghan Nolan
easiest approach, increase sample size
however, large samples do not replace effective designs
little data design implications
appropriate contrasts & framing of problem
Big Data & population-level contrasts
use power-thinking: rejection strengths & effect sizes
resources
http://www.independent.co.uk/life-style/health-and-families/health-news/too-much-jogging-may-be-as-bad-for-you-as-not-running-at-all-study-suggests-10020478.html
http://www.runnersworld.com/health/the-supposed-dangers-of-running-too-much
http://hdexplore.calit2.net/wp/project/personal-data-for-the-public-good-report/
http://www.statisticalsolutions.net/pss_calc.php
https://whatthestats.wordpress.com/2012/09/10/statistical-power/
https://onlinecourses.science.psu.edu/stat414/book/export/html/245
Cohen 1992. Statistical Power Analysis & A Power Primer.