What variables have the researchers identified? What study design was used?

Review one of the suggested articles. What is the research problem being addressed? What variables have the researchers identified? What study design was used? How did the researchers collect and measure the data? Discuss the rationale for choosing the method(s). Discuss the validity and reliability of the instruments used.

Hansen, L. O., Williams, M. V., & Singer, S. J. (2011). Perceptions of hospital safety climate and incidence of readmission. Health Services Research, 46(2), 596–616. doi:10.1111/j.1475-6773.2010.01204.x