Biomedical subjects

J W Roll

Publications and source records attributed to J W Roll.

2 recordsLinked to original sources

PubMed1978

Reliability of goniometric measurements of hip motion in spastic cerebral palsy.

Reliability of goniometric measurements of ranges of motion in the right hip of four children with mild or moderate spastic diplegia was studied by comparing results when physical therapists used specific and non-specific measurement instructions. Measurements of hip extension, abduction and external rotation were made. The use of specific measurement instructions improved inter-rater reliability only in the case of external rotation. Inter-session reliability was not improved by the use of specific measurement instructions. It is concluded that goniometric measurements have such a low level of reliability that they can only be used to assist clinical judgment, and that they are not sufficiently reliable to be used in studied of cerebral palsy.

Adolescent↗

PubMed1976

Application of step-wise discriminant analysis and Bayesian classification procedure in determining prognosis of acute myocardial infarction.

A retrospective study was carried out to assess the feasibility of computer-assisted prognostication by discriminant analysis and the Bayesian classification procedure based on clinical information collected on patients with acute myocardial infarction. The overall accuracy was 94.2% in predicting hospital death but the prediction of late death after discharge was less accurate. It was found that not all of the 44 variables used for analysis were necessary to reach the same level of predictive accuracy--16 to 20 variables would result in almost the identical prediction. The Bayesian classification procedure was applied to estimate probabilities of individual patients belonging to the different prognostic categories.

Bayes Theorem↗