Biomedical subjects

B L Daniel

Publications and source records attributed to B L Daniel.

38 records · Page 3Linked to original sources

PubMedDate not supplied

Nutritional parameters in homebound persons of greatly advanced age.

There exists a deficiency of accurate information regarding standard nutritional parameters in people of greatly advanced age. In order to begin obtaining appropriate data, we assessed nutritional status in 45 elderly homebound individuals with a mean age of 84 yr, using anthropometric methods, skin testing, and blood analysis. We compared our data with those from the HANES survey, a reasonable approach to the testing of new possible standards for nutritional assessment. Our results suggest that standard measures in common use are inappropriate for people of greatly advanced age.

Aged↗

PubMedDate not supplied

Graphic representation of numerically calculated predictive values: an easily comprehended method of evaluating diagnostic tests.

The authors present a brief BASIC-language computer program that calculates positive and negative predictive values from the known sensitivity and specificity of a test over a range of disease prevalences and produces easily comprehended graphs of these relationships using commonly employed graphics software. These graphs permit rapid appreciation of the effect of prior probability on predictive values. They may facilitate selection of the appropriate test for the anticipated setting and avoidance of the unexpected inaccuracies that often result when tests are chosen on the basis of sensitivity and specificity alone.

Computer Graphics↗