Which of the following is NOT a method used to collect data?

Interviews with healthcare professionals are indeed a recognized method for collecting data, particularly in the fields of healthcare and social sciences. This method involves gathering qualitative insights and information directly from professionals who can provide expert opinions, experiences, and observations related to specific healthcare topics. Such interviews help in understanding practices, challenges, and trends in healthcare, and they can yield rich, detailed data that surveys and focus groups might not capture fully.

In contrast, focus groups, surveys, and public databases and journals are also valid methods of data collection each serving specific types of research or inquiry. Focus groups gather diverse perspectives and facilitate discussions among participants, allowing researchers to explore opinions and attitudes. Surveys systematically collect responses from a larger population, providing quantitative data. Public databases and journals compile pre-existing information collected by other researchers, making it accessible for secondary research.

Understanding these methods' roles is crucial, as they provide tools to gather valuable insights across different contexts in healthcare research.