An Appraisal of a Piece of Research-based Evidence Relevant to Healthcare Practice.
Since the 1970’s the term evidence-based health care has progressively been used more, the expansion of evidence-based health care has risen with the development of being able to access a range of information. Other factors that have contributed to the use of evidence based health care include; changing of public expectations, political consensus, cost pressures and professional accountability (Hamer Collinsons 2005, cited by Cutcliffe W. & J. Ward M, 2004).
There are many different definitions to describe evidence-based practice (EBP), the best known definition was written by Sackett et al (1997, cited by Lindsay, B 2007) he states that EBP is the …show more content…

This type of sampling does have a limitation, this type of sampling is considered as a poor approach, the reason being it provides little opportunities’ to be able to control biases from occurring, relating to this article the research relies on volunteers’ which can make the results biased due to the promotion of a certain point of view. (UOW, 2008) this may result in answers that will not be contrasting and could conclude in problems of representations of the sample. It is all a principle of who is in a place at a certain time. Although biases is a problem that needs to considered in this type of sampling, there are also positive aspects to this method; its inexpensive, easily accessible and less time consuming than many of the other methods of sampling (Burns, N & Grove, S 2007). Sample size in a research study is also very important, if a sample size is too small the data collected would lack adequate depth and this can reduce the quality and credibility of the research findings, on the other hand if the sample size is too big then the study would be more time consuming and more costly (Burns, N & Grove, S 2007). In this study, due to the sampling method used, the researchers decided to use a small sample size and this improved the chance of being able to gain focused in-depth data. Sandelowski (1995, Cited by Burns, N & Grove, S) stated that ‘In qualitative research,