Search PubMed⌕ Search

Biomedical subjects

D R Lewis

Publications and source records attributed to D R Lewis.

16 recordsLinked to original sources
PubMed1992

Empirical analysis of multidimensional measures of community adjustment for young adults with mental retardation.

Confirmatory factor analysis procedures were used to evaluate multidimensional measures of community adjustment in a sample of 239 young adults with mild to severe mental retardation. Alternative measurement models were evaluated in one-half of the sample, with the final model cross-validated in the second half of the sample. The final cross-validated model was also evaluated as a function of level of retardation. Evidence was found for at least six broad dimensions of community adjustment when combined with other multidimensional research findings. The measurement of one dimension varied as a function of degree of retardation. Use of validated multidimensional measures of community adjustment in future research studies was discussed.

Activities of Daily Living↗
PubMed1991

Efficiency considerations in delivering special education services to persons with severe mental retardation.

The basic question addressed in this paper is whether formal benefit-cost and effectiveness-cost analyses might allow us to determine whether the outcomes of particular special education services are being offered in their most efficient manner. In attempting to answer this question, we focused upon measuring as many of the cost and outcomes as possible (in both monetary and other terms) from two specialized schools serving youth with severe mental retardation. We examined a number of alternative assumptions for illustrating some of the problematic issues in the use of such evaluation techniques.

Adolescent↗
PubMed1985

Computerized axial tomography versus complex motion as a predictor of surgical findings in middle ear and mastoid cholesteatoma.

In order to evaluate the efficacy of polytomography and computerized tomography in the prediction of surgical findings in cases of suspected cholesteatoma of the middle ear and mastoid, we evaluated preoperatively 52 ears by both radiographic methods. We utilized a check list of 14 radiological signs or surgical findings to generate measures of sensitivity and specificity. The strengths of each radiographic method are outlined and the considerable weaknesses in predictive value are discussed.

Cholesteatoma↗
PubMedDate not supplied

Dopant materials used in the microelectronics industry.

Advances in microelectronics have transformed the occupational environment of the electronics industry. Large quantities of potentially hazardous materials are now in routine use as integrated circuit manufacturing becomes more complex and specialized. While the acute hazards associated with these dopant materials are clear, the subacute and chronic effects are less evident. Many of these elements are trace elements in humans and may play roles in health and disease in minute concentrations. Early detection and prevention of adverse health effects requires both astute medical surveillance, industrial hygiene, and safety engineering efforts to eliminate the sources of exposure to workers.

Antimony↗