The overall response rate to the questionnaire was acceptable but there may be a risk of interview bias among those contacted by phone.
In the study by Jensen et al, all residents were screened for their risk of falling (interviewed and assessed by physiotherapists at baseline); individuals in the control arm received usual care [39].
Risks associated with procedures the investigator uses to collect data, such as the risks of interviews or blood collection, would be risks directly related to research.
Matched communities were used to avoid the risk of the interviews confounding the results of the main study, and were selected using the same criteria.
To reduce the risk of skewed interview responses, we recruited six physicians from each hospital, who varied by specialization and, therefore, exposure to and use of different devices (two general surgeons, two orthopedic surgeons, two vascular surgeons, two cardiologists, two cardiac surgeons, two interventional radiologists).
Using snowball and purposive sampling, 27 service providers and community members with knowledge of the local context and the diverse needs of those at risk of depression were interviewed.
To minimise any risk of dependent relationships, interviewers only interviewed SMEs where no direct reporting, working, personal, or financial relationship existed.
To identify risk factors, we interviewed all of the identified contacts (or their proxies) of the primary, index, and collateral case-patients, irrespective of their status (patient or healthy contact).
She warns of "the risk of the walking interview" (police sirens).
The participants were pregnant women and their partners considered to be at psychosocial risk via three factors: socioeconomic status (low-paid jobs, unemployed, with or without subsidy), low social support (migrants or those living isolated), and the risk of PPD (validated interview).
