Prevalence and predictors of depression among general surgery residents: Methodological issues to avoid misinterpretations

Precise estimate can not be provided using the small sample size and large sample may lead to loss of resources. [...]sample size must be justified in each study using the principles of sample size calculation.5 Also, in all of the analytical studies the type 1 error (α) and type 2 error (β) are con...

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Bibliographic Details
Published in:The American journal of surgery 2018-07, Vol.216 (1), p.180-181
Main Authors: Pakzad, Reza, Safiri, Saeid
Format: Article
Language:English
Subjects:
Depression
Emotional intelligence
Mental depression
Mental health
Methodology
Studies
Surgery
Well-being
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Summary:Precise estimate can not be provided using the small sample size and large sample may lead to loss of resources. [...]sample size must be justified in each study using the principles of sample size calculation.5 Also, in all of the analytical studies the type 1 error (α) and type 2 error (β) are considered to be 0.05 and 0.2, respectively. [...]the minimum statistical power of test (1- β) should be considered 0.8 in the epidemiologic studies, otherwise some statistically significant associations may be presented as non-significant due to the insufficient statistical power of test. [...]the minimum power of statistical tests has not been provided and some statistically significant associations may be presented as non-significant due to the insufficient statistical power of test.
ISSN:0002-9610
1879-1883
DOI:10.1016/j.amjsurg.2017.01.020