At the time of data analyses, 472 patients were randomised, 433 patients consented to the quality-of-life study, and 410 of them completed a baseline questionnaire.
Samples sourced at WMRGL were collected through the University of Birmingham's Human Biomaterials Resource Centre (HBRC), an HTA-licensed facility dedicated to the collection, processing and storage of appropriately consented, high quality human biomaterials for research.
Interviewers may influence the type of people who consent to take part, the quality and quantity of interview data.
Patients for this part of the trial were included on the basis that they provided written informed consent to participate in the quality of life/health economics sub-study of the trial.
When assessing children's competence to consent, the quality and relevance of information must be optimized.
Special attention is directed to the question of whether reaching high numbers of persons who get tested results in infringements of individual rights to confidentiality, consent and quality of care.
Among those trials for which authors reported obtaining individual consent, the quality of consent processes appeared to improve over time (ordinal logistic OR 1.12 (95% CI 0.98 to 1.28)).
Patient consent was waived, as data were derived either from administrative registers that do not require informed consent or quality registers where the consent is already given at the time point of first registration.
11 12 14 19 We also examined trends over time in reporting ethical approval, reporting individual consent and quality of the consent processes, using logistic regression or ordinal logistic regression as appropriate, testing for assumptions of the models as appropriate and using a 5% significance level in all analyses.
In another study at a South African district hospital, the authors concluded that language barriers in hospitals create significant problems for healthcare professionals and can impact negatively on patients' rights to confidentiality, informed consent and the quality of healthcare service delivery [ 73].
