The authors of the above paper have noticed significant errors in Table 2. The errors appear in columns 5 to 8, in which the computed sample sizes are incorrect. The correct Table 2 is provided below:Table 2Sample size calculations.Site (initial mean value)% changeSEM (kPa)ESSample size required for crossover designSample size required for parallel design80% power90% power80% power90% powerWrist (472 kPa)30%841.19810263225%840.991113364620%840.791519547015%840.6024329012010%840.405268200266Leg (501 kPa)30%931.14911283625%930.951114385020%930.761621587615%930.57273510013210%930.385775220294Neck (413 kPa)30%791.11911283825%790.921215405220%790.741722608015%790.55283710614210%790.376079232310Back (606 kPa)30%1001.2979222825%1001.07912304020%1000.861317466015%1000.6422288010610%1000.434559172230SEM, standard error of measurement; ES, effect size (Gyatt’s responsiveness index =percentage change divided by the square root of two times the mean square error term from the repeated measures analysis of variance test).
Scandinavian Journal of Pain – de Gruyter
Published: Oct 1, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera