Exact(1)
At the Comparison schools the response rate was less important (overall around 25% of IEC students sampled) as the sample was recruited to try to minimise difference in demographic characteristics between this sample and the FUn group, prioritising comparability over representativeness.
Similar(59)
For chi-square tests, under- or over-representativeness was assessed using adjusted standardised residuals set at ±2.0.
The over-representativeness of academia and NGOs in the e-mail survey was counterbalanced by interviews at country level, where other stakeholder representativeness was greater.
Conversely, the over-representativeness of the older people might be reasonably due to their perception for the need to clinical check-up, especially when counseling by a cardiologist was provided freely.
Another limitation is the representativeness of the sample: HCPs, specifically MDs, were over-represented while CBO stakeholders were under-represented.
The results from the representativeness analysis indicated that the respondents with a higher level of education in the study sample were over-represented, whereas respondents with a lower level of education were underrepresented when compared to the 2001 census of the Local Government area of Brisbane.
However, there are concerns over the representativeness of these findings considering the small number of stores that received tags (n = 2) and the limited time period over which tag effectiveness was assessed (1 week pre-intervention and up to 6 weeks post intervention).
Assigning exposures to these respondents allows for a larger study population and may reduce concern over its representativeness by including more persons outside of urban areas.
For example, there are likely to be problems associated with measurement, non-response and changes in representativeness over time and age.
Because headaches fluctuate over time, the representativeness of this measurement period is uncertain.
The present analysis provides evidence for response representativeness over the survey periods, despite the parallel changes in compliance.
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