Practice forumQualitative research methods: Key features and insights gained from use in infection prevention research
Section snippets
Case example
TRIP involves both quantitative and qualitative approaches (so-called “mixed methods”12). In the first, quantitative phase, we surveyed infection control professionals (ICPs) at all Department of Veterans Affairs (VA) hospitals and a national random sample of nonfederal US hospitals to determine what hospitals were doing to prevent device-related infections, including catheter-associated bloodstream infections (CA-BSIs), ventilated-associated pneumonia (VAP), and catheter-associated urinary
The goal of qualitative research is discovery-oriented and holistic
Most quantitative studies conducted in the field of infection control, and health care in general, tend to use a “top-down” approach. In particular, researchers start with a theory of how specific variables may relate to one another, define how to measure these variables, use closed-ended data collection techniques (eg, fixed response surveys) to collect data, use statistical methods to test a priori hypotheses, and generalize findings through statistical inference.
In contrast, qualitative
The research process in qualitative studies is iterative and emergent
Quantitative research often is done in a sequential manner. The theory is identified, hypotheses are stated, the data collection proceeds based on previous theory and hypotheses, and data analysis commences after data are collected. Any changes to the data collection process after the start of the study may threaten the validity of findings.
In contrast, because qualitative research is a process of discovery, the research process is iterative rather than sequential. Data collection and analysis
Sampling in qualitative research is purposeful
In quantitative research, sampling is typically representative and randomized, to ensure that results can be generalized from a sample to a population and also that participants with certain characteristics are adequately represented in the sample. In contrast, sampling in qualitative studies is typically purposeful, with the goal of intentionally sampling cases that can best help the investigator understand the central problem under study. We use the word “typically” here because in a small
Qualitative data analysis is largely inductive and interpretive
The primary approach used in quantitative data analysis is to take specific numerical or categorical responses to closed-ended questions based on variables that reflect theoretical constructs and analyze these data using statistical procedures. This is largely a deductive process. In contrast, qualitative analysis generally proceeds inductively from making specific observations to identifying recurrent themes and patterns in the data. Researchers examine cases systematically, and then compare
Assessing the validity and generalizability of qualitative findings
Standards of excellence for quantitative research often are based on the validity of results, the significance of inferences drawn from results, and the generalizability of results to settings and populations. Like all research, qualitative research is a mixture of science and art, but it involves a bit more art than quantitative research. As Patton noted, “statistical analysis follows formulas while, at the core, qualitative analysis is a creative process, depending on the insights and
Qualitative findings are the products of data interpretation and can be presented in several ways
In a previous report that presented quantitative findings from the TRIP study, we gave the percentage of hospitals in a nationally representative sample that used each of several practices to prevent CA-UTIs, along with multivariable logistic regression results demonstrating associations between several independent variables and practices to prevent CA-UTIs.5 These analyses provide useful information across a large sample but do not provide deeper insight into why those associations might
Conclusion
Analysis of our quantitative survey in the TRIP study identified how many US hospitals are using certain practices to prevent device-related infections, as well as the associations between several independent variables and the use of these different practices. The use of qualitative methods added to this discussion in specific ways; it revealed processes of practice adoption and implementation that we could not uncover using quantitative methods, helped us challenge some of our assumptions,
References (25)
- et al.
Community-associated methicillin-resistant Staphylococcus aureus prevalence: how common is it? A methodological comparison of prevalence ascertainment
Am J Infect Control
(2007) - et al.
Factors associated with health care–acquired urinary tract infection
Am J Infect Control
(2007) - et al.
Impact of the StatLock securing device on symptomatic catheter-related urinary tract infection: a prospective, randomized, multicenter clinical trial
Am J Infect Control
(2006) The art and science of clinical knowledge: evidence beyond measures and numbers
Lancet
(2001)- et al.
Translating infection prevention evidence into practice using quantitative and qualitative research
Am J Infect Control
(2006) - et al.
A multicenter qualitative study on preventing hospital-acquired urinary tract infection in US hospitals
Infect Control Hosp Epidemiol
(2008) - et al.
Preventing hospital-acquired urinary tract infection in the United States: a national study
Clin Infect Dis
(2008) - et al.
Patients' understanding and participation in a trial designed to improve the management of antipsychotic medication: a qualitative study
Soc Psychiatry Psychiatr Epidemiol
(2003) - et al.
Patients' and physicians' attitudes regarding the disclosure of medical errors
JAMA
(2003) - et al.
Governing the surgical count through communication interactions: implications for patient safety
Qual Saf Health Care
(2006)
The emergence of qualitative methods in health services research
Health Serv Res
Designing and conducting mixed-methods research
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