ER use in the prior year was collected using two methods: self-report by the Veteran and abstraction of the VA medical records using the Austin Automated Database.
The fact that these criteria were assessed by different methods (self-report, parental report, and clinical examination) adds to the evidence of validity [ 22].
OA case definitions used in the literature vary by site of joint involvement (knee, hip, hand, generalised, unspecified) and by method (self-report, clinical diagnosis/classification, plain radiography or other imaging, combinations of these).
Comparisons of the differences in reporting method (self-reported, measured by medical staff) and changes over time give an indication of self-report bias.
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).
We further carried out subgroup analysis to explore potential sources of heterogeneity based on sex, study location (Eastern vs. Western countries), duration of follow-up (<11.4 vs. ≥11.4 years), and outcome identification method (clinical examination vs. self-report) by using random-effects models.
The Tromsø studies have been linked electronically to the Cancer Registry of Norway (CRN) enabling the identification of cancer patients by two methods; through self-reporting of cancer in the survey and through registration in the CRN.
The study is based on self-reporting by religious groups, a method that the study's authors acknowledge is imprecise because religious groups can inflate their numbers.
Self-reports by children are the primary method of oral health status and oral HRQoL assessment, supplemented by parent or guardian proxy report [9, 10].
The method used to estimate time spent on each project was based on retrospective self-reports by each team member.
This is challenging, particularly because of the limited capacity of self-report by these individuals, which means that assessment relies in large part on observational methods.
