critical appraisal of two articles using the appropriate CASP guidelines”:
CASP (Critical Appraisal Skills programme 2010) is a tool for one to criticize research paper. The questions provided, make one think and consider whether a research study is convincing and trustworthy. In the following, CASP will be used to criticize 1 quantitative research and 1 qualitative research.
For quantitative research, Experiences of sub-fertility among Chinese couples in Hong Kong: a qualitative study (Loke, A, Yu P, Hayter M (2011) would be used.
Was there a clear statement of aims of the research?
Yes, the aim is clearly stated in the essay, “This study aimed to explore the lived experience of sub-fertility among Chinese couples in Hong Kong.” (Loke, Yu, Hayter ). The population of the research is the couples that without children even if they tried. The research investigates their feelings and experience by interviews in 5 months, from August 2003 to January 2004.
Is a qualitative methodology appropriate?
Yes, this study uses phenomenological approach which can reflects one’s experience and feelings( Parahoo 1997) as the frame of the design of this research, this can logically making abstract materials into qualitative data for a research. Since quantitative research aims of numerical and accountable result (Denzin, Lincoln  ), it is not suitable to use quantitative approach to investigate feelings and experience.
Was the research design appropriate to address the aims of the research? Yes, since the research aims to study the experience of sub-fertility of Chinese couples, the design is using phenomenological approach such as interviews, conversation and participants observation to those “involuntary childless” couples (Loke, Yu, Hayter ) which is for the aim of the research. By recording the interviews during conversation and interpreting the facial expression, general feelings of the participants can be transcribed. (Collazi )
Was the recruitment strategy appropriate to the aims of the search? In the research, a “snowballing sampling technique “ is used (Loke, A, Yu P, Hayter M (2011) which means the initial group of contacts are friends of the researcher, then by using their network, this research and recruitment information are spread out and interviewees are then found. This strategy has no conflicts with the aims of this research because the potential interviewees are further selected after a fully explanation, so the interviewees in the study are screened to fit for the aim of the study. However, the research team can consider finding some more significant participants in hospitals, communicate with fertility clinic to get a bigger pool of participants so that the result can be more significant. There are 2 disadvantages of ‘friends and friends of friends’ approach, first, the pool size is limited. The second one is, some infertility couples may not want friends to know or involved in the issue, they may feel embarrassed to tell others. Unlike those infertility couples in fertility clinic, they are comparatively more open-minded to their issue since they are willing to seek for help, they are more willing to share their thoughts, difficulties and worries.
Were the data collected in a way that addressed the research issue? Yes, since the aim of the research is to investigate the feelings of the sub-fertility among Chinese couples in Hong Kong, the data are collected by interview of target group, not only record the conversation, but also the gestures, facial expression and even tone of voice. These are features of one’s reaction expressing feelings and experience, so it addressed the research issue. 6.
Has the relationship between researcher and participants been adequately considered? To avoid subjective opinion or bias affecting the researching result, the researcher should be unknown to each other. The recruitment method as mentioned...
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