Self-reported information about CAM use did not rule out selection bias, the possibility of socially desirable responses, and probable variation in data collection, and hence may not reflect the actual behavior and/or practice of a student.
Our study is limited to playground slide-related injuries that were seen in U.S. emergency departments participating in NEISS data collection, and thus may not be generalizable to other populations.
As noted by Luff et al. [ 35], "while self-report scales and questionnaires are traditionally 'quick and easy' forms of data collection, this may not be the case when working with people living in care homes" (p.25), owing to the high levels of physical and cognitive frailty [ 38].
Further, as a cross-sectional study, the barriers experienced by the participants outside of the data collection window may not have been captured.
According to the national guidelines, all consent documents in a research protocol need to be translated into the national language, irrespective of the language of data collection which may not be Amharic.
In the UK, the Royal College of Paediatrics and Child Health recently introduced training for health professionals on how to use the new charts[ 24] but at the time of data collection this may not have had an impact on parents' experiences.
"These results, which may appear to be unusual and interesting, may simply indicate problems with the data collection and not the measurement of things that are actually going on," Mr. Kober said.
In the case of small countries, assistance with data collection and analysis may always be required.
The risk of bias for the included articles was not assessed as the scope of the review was specifically interested in only accelerometer related data collection and analysis, and this may not have been the primary outcome of the study.
