In analyzing the number of hospital nights, we considered both the means for all respondents and the means for those respondents with at least one hospital admission (based on either administrative data or self-report) considering overall admissions and IBD-related admissions.
58 721 patients with cancer for whom ethnicity information (Office for National Statistics 2001 16-group classification) was available from self-reports (considered to represent the 'gold standard') and their hospital record.
However, to ensure subjective methods were appropriately managed, all the studies were assessed for quality (e.g. checking accuracy of self reports by considering reciprocity).
For instance, the presence of mental health constraints was significantly associated with a poorer 'school environment' when self reports were considered, and tended towards poorer 'school environment' when parent reports were used.
For most of the health issues presented in this study, self-reports are considered valid for population-level research.
Self report may be considered the most appropriate method to use for monitoring adherence as part of continuous quality improvement in clinical practice.
Self report has been considered the method of choice for clinical use; it is cheap, relatively unobtrusive and able to distinguish between intentional and unintentional non-adherence, which have different underlying causes and therefore require different interventions.
Self report has been considered the method of choice for measuring non-adherence in clinical practice [ 8]; it is cheap, relatively unobtrusive, can be used on all types of medicines and is able to distinguish between intentional and unintentional non-adherence (which have different underlying causes and therefore require different interventions).
The correction procedure which directly corrects prevalence rates derived from self-reports by considering body perception [ 10], showed the smallest deviation from prevalence rates derived from measured data [ 13].
Involvement of a health care professional in determining the presence of a disease state was considered to confer a low risk of misclassification, whereas patient self-reporting was considered to confer a high risk.
However, given that patient self-report is considered the standard in patient-reported outcomes measurement [ 15- 18], a reliance on only parent proxy-report is insufficient.
