Sensitive Items
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Functional neuroanatomical double dissociation of mnemonic and executive control processes contributing to working memory performance
We used event-related functional MRI to investigate the neural bases of two categories of mental processes believed to contribute to performance of an alphabetization working memory task: memory storage and memory manipulation. Our delayed-response tasks required memory for the identity and position-in-the-display of items in two- or five-letter memory sets
The National Academy of Sciences.
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14. Uses of coronary heart attack registers.
By studying all coronary heart attacks presenting within defined communities it should be possible to avoid the distortions and omissions inherent in hospital-based case series. In practice the technique presents several problems. Measures of frequency and outcome are very sensitive to the diagnostic criteria used. Data of varying quality are mixed and speci
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15. Patient assessments of hospital maternity care: a useful tool for consumers?
OBJECTIVE: To examine three issues related to using patient assessments of care as a means to select hospitals and foster consumer choice-specifically, whether patient assessments (1) vary across hospitals, (2) are reproducible over time, and (3) are biased by case-mix differences. DATA SOURCES/STUDY SETTING: Surveys that were mailed to 27,674 randomly selec
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16. Electrical interference in non-competitive pacemakers
Patients with 41 implanted non-competitive pacemakers were investigated. A variety of domestic electrical equipment, a motor-car, and a physiotherapy diathermy apparatus were each operated in turn at various ranges from the patient. Interference effects on pacemaker function were assessed on the electrocardiograph. Medtronic demand 5841 pacemakers were stopp
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17. Biochemical markers of smoke absorption and self reported exposure to passive smoking.
One hundred non-smoking patients attending hospital outpatient clinics reported their degree of passive exposure to tobacco smoke over the preceding three days and provided samples of blood, expired air, saliva, and urine. Although the absolute levels were low, the concentration of cotinine in all body compartments surveyed was systematically related to self
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18. Dry-Heat Inactivation Kinetics of Naturally Occurring Spore Populations
Twenty-three soil samples were collected from areas of the United States where major spacecraft assembly and launch facilities are in operation. Soil samples were treated with ethyl alcohol, ultrasonic energy, and gross filtration. The resultant suspensions consisted of viable, naturally occurring bacterial spores and were used to inoculate stainless-steel s
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19. Clostridium perfringens food poisoning: use of serotyping in an outbreak setting.
An outbreak of Clostridium perfringens food poisoning occurred among attendees of a firehouse luncheon. The predominant symptoms of diarrhea (100%) and abdominal pain (81%) among case-patients, the mean incubation period (13.4 h), and the mean duration of illness (21.2 h) were all characteristic of C. perfringens enteritis. Roast beef, although not epidemiol
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20. Morphology and the internal structure of words
Morphology is the aspect of language concerned with the internal structure of words, and languages vary in the extent to which they rely on morphological structure. Consequently, it is not clear whether morphology is a basic element of a linguistic structure or whether it emerges from systematic regularities between the form and meaning of words. Here, we lo
National Academy of Sciences.
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21. Discriminative power of the health status questionnaire 12 in relation to age, sex, and longstanding illness: findings from a survey of households in Great Britain.
STUDY OBJECTIVE: To assess the ability of the health status questionnaire 12 (HSQ-12) to discriminate between older and younger age groups, its appropriateness for use with an older population in terms of the spread of responses across categories, floor or ceiling effects, and its ability to discriminate between those with and without a reported longstanding
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22. Measures of functional ability (disability) in arthritis in relation to impairment of range of joint movement.
In the World Health Organisation's supplementary classification of the consequences of disease a distinction is made between impairments, such as are related to the site and nature of joint involvement, and any disabilities in everyday activities to which these may give rise. This paper considers the application of these ideas to people with arthritis by exa
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23. Diagnosis and initial management of blunt pancreatic trauma: guidelines from a multiinstitutional review.
OBJECTIVE: The authors' objective was to resolve the current controversies surrounding the diagnosis and management of blunt pancreatic trauma (BPT). SUMMARY BACKGROUND DATA: The diagnosis of BPT is notoriously difficult: serum amylase has been claimed to be neither sensitive nor specific, and recent anecdotal reports have suggested a role for computed tomog
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24. Developing quality measures for adolescent care: validity of adolescents' self-reported receipt of preventive services.
OBJECTIVE: To demonstrate the feasibility of directly surveying adolescents about the content of preventive health services they have received and to assess the validity of adolescent self-reported recall. DATA SOURCES/SETTING: Audiotaped encounters, telephone interviews, and chart reviews with 14-21 year olds being seen for preventive care visits at 15 pedi