Measurement tools are instruments used by researchers and practitioners to aid in the assessment or evaluation of subjects, clients or patients. The instruments are used to measure or collect data on a variety of variables ranging from physical functioning to psychosocial wellbeing. Types of measurement tools include scales, indexes, surveys, interviews, and informal observations.

Qualitative research is defined as research that derives data from observation, interviews, or verbal interactions and focuses on the meanings and interpretations of the participants. (Holloway and Wheeler, 1995)

Qualitative research can be challenging to find as these methodologies are not always well-indexed in bibliographic databases. This help guide will provide some tips and information to guide you in your search for qualitative research articles through databases, such as PubMed and CINAHL.

This guide provides background information about selected web-based drug information resources that can be used to answer specific questions you might have about medications, both prescription and over-the-counter as well as dietary supplements and herbals.