In principle, if detailed information is required, provider records may be a better source of utilisation data than burdening patients with a detailed data collection procedure by means of a diary, a written questionnaire or an interview [ 1].
Challenges in establishing the risk factors for severe PH in NSCLC include the small number of cases and the difficulty in collecting accurate and complete information (e.g. due to rapid fatality, a lack of autopsy data and the lack of a standardised data collection procedure).
A retrospective data collection procedure may induce recall-bias.
The rest of the three sessions followed a routine data collection procedure, which is shown in Table 1.
The four graduate students were responsible for inviting participants and for guiding the completion of the questionnaires following a standardized data collection procedure.
(v) The temporal directionality from the exposure to the outcome must be sustainable, either theoretically or by means of a thorough data collection procedure.
Second, although we used a uniform data collection procedure based on the Utstein-style guidelines for reporting cardiac arrest, a large sample size, and a population-based design, we cannot exclude the possibility of uncontrolled confounders.
Third, although we used a uniform data collection procedure on the basis of the Utstein-style guidelines for reporting cardiac arrest, a large sample size, and a population-based design, we cannot exclude the possibility of uncontrolled confounders.
The study was an observational prospective cohort design that used a questionnaire-based data collection procedure, following the Great Britain Injury/Illness Performance Project (IIPP) methodology, 18 and using the Sport Medicine Diagnostic Coding System for injury-specific and illness-specific diagnoses.
Methods: Using a web-based data collection procedure, we recruited 1298 male users of pornography to complete questionnaires assessing hypersexuality, pornography use history, and general self-efficacy.
