The problem about these studies is that they did not use a standard methodology – making comparison all but meaningless.
Complicating matters further, many studies are small and they use a variety of methodologies, making comparison difficult.
The lack of an established standardized methodology makes direct comparison difficult and may limit the evidence of reproducibility.
When comparing the present prevalence rates with international data [ 1, 9, 51- 57], the general trend is that respondents of the QLS reported excessive behaviors less frequently than participants of other surveys, although again, the large variability in sample characteristics and assessment methodology makes direct comparison difficult.
A large body of literature exists on issues associated with cancer care "wait times" nationally and internationally [ 8], however, the variability of methodologies used make comparison of results and use of information for decision-making difficult.
This makes comparison difficult.
An executive at one leading bank, who declined to be named, said the RiskMetrics model's transparency enables him to replicate its methodology and make comparisons among clients.
In addition, the studies highlighted in the present review as well as in the reviews of Vorsters et al 17 and Seghal et al, 21 showed that the large variability in sampling and genotyping methodology make direct comparisons of data, like concordance, inaccurate.
Despite a general alignment of aggregate DTCA expenditure and the trend directionality, lack of robust disclosure of DTCA expenditure and the sampling methodology used to collect such data makes comparisons difficult to validate.
For the available studies methodologies differ making comparisons difficult.
