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Research Problems2
Sampling2
Depression (Psychology)1
Measurement Techniques1
Monte Carlo Methods1
Patients1
Research Methodology1
Sample Size1
Statistical Bias1
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Journal of Consulting and…2
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Frank, Richard G.1
McGraw, Kenneth O.1
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Research Selection Bias and the Prevalence of Depressive Disorders in Psychiatric Facilities.
Peer reviewed Peer reviewed
Frank, Richard G.; And Others – Journal of Consulting and Clinical Psychology, 1985
Presents a statistical technique that yields consistent estimates for censored samples. Application of this technique to models related to selection bias and the presence of depression indicate that the prevalence of this disorder in mental health center populations approaches 44 percent rather than the 25 percent from a censored sample.…
Descriptors: Depression (Psychology), Patients, Research Problems, Sampling
How Many Subjects to Screen? A Practical Procedure for Estimating Multivariate Normal Probabilities for Correlated Variables.
Peer reviewed Peer reviewed
McGraw, Kenneth O.; And Others – Journal of Consulting and Clinical Psychology, 1994
Suggest practical procedure for estimating number of subjects that need to be screened to obtain sample of fixed size that meets multiple correlated criteria. Procedure described is based on fact that least-squares regression provides good quadratic fit for Monte Carlo estimates of multivariate probabilities when they are plotted as function of…
Descriptors: Measurement Techniques, Monte Carlo Methods, Research Methodology, Research Problems