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Biomedical subjects

B J Naughton

Publications and source records attributed to B J Naughton.

6 recordsLinked to original sources
PubMed1992

Self-reported functional status predicts change in level of care in independent living residents of a continuing care retirement community.

OBJECTIVE: To test the hypothesis that self-reported functional status predicts change in level of care from independent to dependent in residents of a continuing care retirement community (CCRC). DESIGN: Two-year longitudinal descriptive study of change in level of care and survival. SUBJECTS: One hundred fifty-two residents in the independent-living unit of a non-profit CCRC. Mean age at initial evaluation was 82.3 years, SD 6.2. MEASUREMENT: Predictor variables assessed at baseline were age, sex, physician estimate of functionally significant disease, self-reported functional status, and performance-based hand function. Criterion variables collected at 2-year follow-up were level of care (independent/dependent) and survival (alive/dead). MAIN RESULTS: Self-reported functional status (P less than 0.01) and age (P less than 0.05) were significant predictors of change in level of care in a logistic regression analysis containing all predictor variables. No variable predicted survival. CONCLUSIONS: Self-reported functional status may help to predict dependency in older adults in good health who have few markers of dependency risk.

Activities of Daily Living↗
PubMed1991

Self report and performance-based hand function tests as correlates of dependency in the elderly.

Preventing or minimizing functional dependency in older adults rests, in part, upon the ability to predict who is at risk. The purpose of this study was to compare the ability of five tests of hand function to discriminate the degree of dependency in older adults. Seven hundred sixty four subjects were assessed for hand function on performance-based (Williams Test of Hand Function, a test of Williams Board items only, Jebsen Test of Hand Function, grip strength), and self-reported (Dexterity Scale of the Geriatrics-Arthritis Impact Measurement Scale (GERI-AIMS] measures of hand function, and self-reported multidimensional functional status (GERI-AIMS). A trichotomous variable representing a continuum of dependency based upon living site (independent living, home-bound, institutional) was used as the measure of dependency. Sixty-two cases were dropped for incomplete data. Discriminant function analyses of the 702 subjects (age X = 76.78 years, SD = 8.79) showed that basic demographic variables explain 40.8% of the variance in dependency; all hand function tests significantly correlated with dependency; the Williams Board correlated best (additional 12.5% variance explained). However, a multidimensional functional status measure explains substantially more variance in dependency (16.9%) after controlling for demographic variables and performance on the Williams Board. This comparison of methods and tests available for measuring hand function was made to provide criteria for selecting an instrument for a given setting.

Activities of Daily Living↗
PubMed1977

Measurement of cardiac output using improved chromatographic analysis of sulfur hexafluoride (SF6).

A constant current variable frequency pulsed electron capture detector has been incorporated into the gas chromatographic analysis of trace amounts of sulfur hexafluoride (SF6) in water and blood. The resulting system offers a broader effective operating range than more conventional electron capture units and has been utilized for measurements of cardiac output employing constant-rate infusion of dissolved SF6. The SF6 technique has been validated against direct volumetric measurements of cardiac output in a canine right-heart bypass preparation and used subsequently for rapidly repeated measurements in conscious animals and man.

Animals↗
PubMedDate not supplied

Patterns of syphilis testing in the elderly.

OBJECTIVE: To evaluate the frequency of inconsistencies in the use of laboratory tests for syphilis among the elderly in an acute care setting. DESIGN: Retrospective medical record review. SETTING: Academic medical center. PATIENTS/PARTICIPANTS: All patients 60 years of age and older who had: 1) positive tests for syphilis and no lumbar puncture performed (n = 71), 2) lumbar punctures performed and no positive test for syphilis (n = 68), and 3) positive tests for syphilis and lumbar punctures performed (n = 8). INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The chronology and results of syphilis tests were abstracted from the medical records. Documentation of signs and symptoms of neurosyphilis, including dementia and depression, were abstracted from the medical records by a second reviewer. Most patients had inadequate evaluations; 51 had no follow-up of positive syphilis tests and 43 had cerebrospinal fluid syphilis tests in the absence of positive blood tests for syphilis or signs and symptoms of neurosyphilis. CONCLUSIONS: The inconsistent pattern of serologic testing in this study suggests that the testing was done as a routine procedure and not for a specific purpose. For a majority of the tested individuals, the results did not provide a public health benefit or contribute to the individual's well-being.

Aged↗
PubMedDate not supplied

Screening elderly veterans for alcoholism.

OBJECTIVE: To determine the sensitivity and specificity of an alcoholism screening test not previously tested in the elderly. DESIGN: Cross-sectional study, face-to-face interviews. SETTING: Veterans Administration (VA) outpatient facility. PATIENTS/PARTICIPANTS: Men greater than or equal to 70 years old seeking care in a newly established VA outpatient facility were invited to participate in a health assessment program. Of 109 participants who enrolled, 96 completed both interviews. INTERVENTIONS: The screening test was administered by an internist as part of a medical history. The Michigan Alcoholism Screening Test (MAST), used as the "gold standard," was administered by a trained interviewer as part of a longer structured interview. MEASUREMENTS AND MAIN RESULTS: The screening test had a sensitivity of 0.52 and a specificity of 0.76 in this sample. CONCLUSIONS: The sensitivity and specificity of the screening test were lower in this sample in comparison with previously reported results in a younger population. Differences in the test performance may be related to differences in attitudes and drinking behaviors of elderly veterans when compared with those of younger men and women.

Age Factors↗