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Factor Analysis In Nursing

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for factor analysis (Guadagnoli & Velicer, 1988, Hoelter, 1983; Aday & Cornellius, 2006; Polit & Beck, 2008) other authors appear to not support their use (Gaskin & Happell, 2014). In 2014, Gaskin and Happell published a study to explore the way nursing researchers utilize factor analysis. The focus was on five areas of decisions that are commonly made when doing factor analysis: Sample size; choice between factor analysis and principal component analysis; numbers of factors to be retained; data extraction and method of factor rotation. In order to provide guidance and information to researchers, the authors reviewed the literature regarding the above areas of interest, assessed current and best practice for researchers and, provided recommendations …show more content…
The main findings from the review revealed that most researchers based their sample size on participants-to-items ratio and that more often than not (61%) principal component analysis was performed rather than factor analysis. Additionally, researchers mainly used eigenvalues greater than one and scree tests to determine numbers of factors/components to retain and principal components analysis for data extraction. Regarding rotations, they found that Varimax method of rotation was most commonly chosen. The authors concluded through this rigorous assessment of the literature that the well-established methods were in fact outdated and may have had an adverse effect on the solutions they generated.
Regarding sample size, “Poor estimation of sample size requirements for factor analysis may lead to the recruitment of too many or too few participants, which not only affects the quality of the solutions generated, but can also have adverse ethical and resource implications” (Gaskin & Happell, 2014 pg. 513). Therefore, based on Gaskin and Happell’s (2014) research examining best practices for sample size needed for factor analysis, with approximately eight variables per factor, the sample size required is between 100 and …show more content…
Representatives from the health centres’ human resources departments will email the doctors, nurses and midwives in the target population. The researcher plans to obtain a sample of 100 to 130 participants (Gaskin & Happell, 2014). Additionally, to expand the reach of recruitment efforts, the MCDG ListServe will be used. The MCDG (Maternity Care Discussion Group) of the College of Family Physicians of Canada is an interprofessional online List Serve, with representation from the Society of Obstetricians and Gynaecologists of Canada (SOGC) the Canadian Association of Midwives (CAM) and other groups and maternity care providers including some researchers, policy-makers, and students and members from other countries. The founding chair and Listmaster of the MCDG is Dr. Michael C. Klein. Membership is now approximately 1400 members. As far as is known, MCDG is the only interdisciplinary maternity care list, worldwide. The approved invitation for Phase II will be sent through the Listmaster to Family Physicians, Obstetricians, Midwives and Nurses who are on the

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