As healthcare reforms, both in England and other countries make even publicly-owned healthcare providers increasingly autonomous, these questions have increasing and wider importance.
Nations have increasing options.
There have been increasing questions raised, even among those who once promoted the drugs, that they are not the panacea to treating chronic pain.
It is also possible that 'thinking aloud' may have increased attention to questions, so prompting responses that may differ from those obtained in normal conditions.
As enrollments have increased over the years, questions have been raised periodically about whether to build new schools or add on to existing ones — thereby maintaining the Princeton plan.
The questionnaire was long, which may have increased missing rates for later questions.
Although these tools are frequently used in other settings, there is a subset of the WAST questions that have increased sensitivity in the orthopaedic trauma population [ 12].
In elderly populations, in particular, non-response to questions could have increased the chance of under-reporting; however, this misclassification is likely to have been non-differential and hence may have biased the results towards the null.
These additional questions would have increased the precision and accuracy of the data with respect to whether the pregnant women meet the recommendation of engaging in exercise of moderate intensity.
Moreover, researchers can standardize measures across participants and have increased flexibility, including using branching/contingency questions, or multilingual versions of instruments [ 4, 12, 18, 19].
