Table 2.

Overview of Data Collection Methods

Method	Content	Examples
Telephone interview	Visits Compliance with local protocol Well-being of residents, family and staff	Number, location of visits To what extent did visitors comply with the local protocol? What is your impression of the impact of allowing visitors on the well-being of residents, family members, and staff?
Questionnaire	Context of the nursing home Application of national guidelines to local context	Number of beds, type of nursing homes, own bedrooms, schedule of staff Temperature of visitors is measured at entrance; visits are supervised
Documentation	Local protocols, information letters to visitors, other documentation that the nursing home has used	n/a
WhatsApp group	Discussion of real-time problems, experiences, and solutions of the participating nursing homes	n/a