The phrase "trial article" is not commonly used in written English.
It is possible that you are thinking of the term "trial balloon," which is a tactic used in politics and public relations to test the public's response to an idea before officially announcing it. In this case, you could use it in a sentence like, "The politician floated a trial balloon in the form of an op-ed article to gauge public opinion on her proposed policy change."
Quitting after two years because she realised she was "never going to be the best architect", a series of trial articles landed her on a job on teenage magazine Petticoat and within six months the Daily Mail had poached her to become their deputy fashion editor.
All I can say is be wary of requests, never agree to paid work without proof of payment, and deliver trial articles at your own discretion.
Of the 604 randomized clinical trial articles that were reviewed, 231 (38%) met eligibility criteria for the present study.
A PubMed literature search was conducted to identify relevant, peer-reviewed saxagliptin clinical trial articles published between January 2008 and June 2015.
A PubMed literature search was conducted to identify relevant, peer-reviewed clinical trial articles published between January 2008 and June 2015 related to saxagliptin.
MS performed the Medline searches, carried out duplicate data extraction for some randomised controlled trial articles and data items, and commented on the manuscript.
The first data set [ 8] contains per-group data from 16 randomized controlled trial articles with a dichotomous outcome, i.e. group sizes and event rates.
We either derived cohorts of baseline never-smokers from trial articles or asked authors to provide such cohorts with new data runs.
KJ contributed to the conception and design, carried out data extraction for all meta-analysis and randomised controlled trial articles and items, compiled the results, and co-drafted the manuscript.
ML contributed to the conception, design and co-ordination of the study, carried out duplicate data extraction for some randomised controlled trial articles and items, compiled the results, performed the statistical analysis and co-drafted the manuscript.
