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51.
African Americans have historically been considered high-risk renal transplant recipients due to increased rejection rates and reduced long-term graft survival. Modern immunosuppression has reduced rejections and improved graft survival in African Americans and may allow successful corticosteroid withdrawal. Outcomes in 56 African Americans were compared to 56 non-African Americans enrolled in early withdrawal protocols. Results are reported as African American versus non-African American. Acute rejection at 1 year was 23% and 18% (P = NS), while patient and graft survival was 96% versus 98% and 91% versus 91% (P = NS), respectively. In conclusion, early withdrawal in African Americans is associated with acceptable rejection rates and excellent patient and graft survival, indicating that the risks and benefits of early withdrawal are similar between African Americans and non-African Americans. Additional followup is needed to determine long-term renal function, graft survival, and cardiovascular risk in African Americans with early steroid withdrawal.  相似文献   
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OBJECTIVE: To investigate variation in headache occurrence and characteristics over 1 year. BACKGROUND: Headache is a common condition which can affect the work, home, and social lives of sufferers, yet surprisingly little is known about how headache changes over time. METHODS: Postal survey to a random general population sample of 5000 adults aged 18 years plus, with follow-up survey to all baseline responders at 1 year and a subsample of 500 being surveyed at 3-monthly intervals between the baseline and 1-year surveys. RESULTS: A total of 1589 (74% response) responded to the 1-year follow-up and 282 of the subsample responded to all five surveys at 3-monthly intervals. Among 1-year respondents with recent headache at baseline (defined as occurring during the previous 3 months), nearly all (94%) also reported headache during the follow-up year. One-third of respondents without recent headache at baseline reported a new episode of headache during the follow-up year. Most (85%) respondents with recent headache at both baseline and 1-year follow-up reported a variation in at least one headache characteristic. These findings were replicated in the sample completing the 3-monthly surveys. Although most of this subgroup reported their headache occurrence status was unchanged during each 3-month period, only a few (3%) respondents with headache in each period reported no variation at all in headache characteristics during the study. CONCLUSIONS: While prevalence of recent headache was stable over time for individuals, there was considerable variation in headache characteristics.  相似文献   
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BACKGROUND AND PURPOSE: Scapular muscle performance evaluated with a handheld dynamometer (HHD) has been investigated only in people without shoulder dysfunction for test-retest reliability of data obtained with a single scapular muscle test. The purpose of this study was to assess the reliability, error, and validity of data obtained with an HHD for 4 scapular muscle tests in subjects with shoulder pain and functional loss. SUBJECTS AND METHODS: Subjects (N=40) with shoulder pain and functional loss were tested by measuring the kilograms applied with an HHD during 3 trials for muscle tests for the lower trapezius, upper trapezius, middle trapezius, and serratus anterior muscles. Concurrently, surface electromyography (sEMG) data were collected for the 4 muscles. The same procedures were performed 24 to 72 hours after the initial testing by the same tester. Muscle tests were performed 3 times, and the results were averaged for data analysis. RESULTS: Intraclass correlation coefficients for intratester reliability of measurements of isometric force obtained using an HHD ranged from .89 to .96. The standard error of the measure (90% confidence interval [CI]) ranged from 1.3 to 2.7 kg; the minimal detectable change (90% CI) ranged from 1.8 to 3.6 kg. Construct validity assessment, done by comparing the amounts of isometric muscle activity (sEMG) for each muscle across the 4 muscle tests, revealed that the muscle activity of the upper trapezius and lower trapezius muscles was highest during their respective tests. Conversely, the isometric muscle activity of the middle trapezius and serratus anterior muscles was not highest during their respective tests. DISCUSSION AND CONCLUSION: In people with shoulder pain and functional loss, the intrarater reliability and error over 1 to 3 days were established using an HHD for measurement of isometric force for the assessment of scapular muscle performance. Error values can be used to make decisions regarding individual patients. Construct validity was established for the lower and upper trapezius muscle tests; therefore, these tests are advocated for use. However, construct validity was not demonstrated for the serratus anterior and middle trapezius muscle tests as performed in this study. Further investigation of these muscle tests is warranted.  相似文献   
54.
Computed tomographic appearance of the bulging annulus   总被引:6,自引:0,他引:6  
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OBJECTIVE: To compare specimens obtained with the Fischer cone biopsy excisor or loop electrosurgical excision procedure (LEEP) with respect to number of specimens obtained, margin interpretability, adequacy of excision, and ease of use. METHODS: One hundred eligible patients aged 13 years and older were randomly assigned to treatment with the Fischer cone biopsy excisor or LEEP. Eligibility criteria included: (1) cervical intraepithelial neoplasia (CIN) 2 or 3, (2) persistent CIN 1, or (3) cytologic/histologic discrepancy. Following excision, providers ranked ease of use on a scale of 1 to 10. A pathologist blinded to procedure type analyzed specimens for margin interpretability and adequacy of excision. Before study initiation we calculated that a total of 100 patients would be required to demonstrate a significant difference in the interpretable margin rate of 80% for LEEP and 99% for cone biopsy excisor (power 80%, alpha =.05). RESULTS: After adjustment for ease of use, lesion size, and degree of neoplasia, the cone biopsy excisor was no more likely to result in a single specimen than LEEP (74% versus 63%, relative risk [RR] 0.93, 95% confidence interval [CI] 0.79 -1.11), to result in a specimen with interpretable margins (65% versus 73%, RR 0.97, 95% CI 0.78-1.22), or to result in a fully excised cervical lesion (72% versus 62% for LEEPs, RR 1.08, 95% CI 0.77-1.52). Providers found their experiences with both Fischer cone biopsy excisor and LEEP cone biopsies to be similar, even after adjustment for year of training and previous experience (RR 0.95, 95% CI 0.72-1.24). CONCLUSION: The Fischer cone biopsy excisor and LEEP performed similarly with respect to the number of final specimens, margin interpretability, and ease of use. LEVEL OF EVIDENCE: I  相似文献   
57.
BACKGROUND: Common mental illness in Black Africans and Black Caribbeans has been relatively little studied in the UK. Previous studies of the detection of psychological problems by General Practitioners (GPs) in these groups have been inconclusive. AIMS: The aim of this study was to investigate the prevalence, detection and management of psychological problems in General Practice among Black Caribbeans and Black Africans compared to White English attenders and to examine the relative contribution of other sociodemographic factors to these main outcome variables. METHOD: Consecutive attenders aged 16-65 years at 18 General Practitioners in South-East London completed the General Health Questionnaire (GHQ-12) before seeing the GP. The GPs rated the current emotional state of the patients at the end of each consultation. Comparison of the GHQ and GP ratings was used to compute the detection indices. RESULTS: A total of 1211 patients aged 16-65 years were approached to take part in the study. Of the patients, 75 (6%) declined or were not able to complete the GHQ. In all, 994 individuals had both GP and GHQ ratings. There was an overall probable prevalence of 37%, of which 73% were identified as cases by the GPs. Black African patients had lower rates of common mental disorders, were less likely to be detected as psychiatric cases by the GP and less likely to receive active management for their psychological problems than Black Caribbean and White English patients. Rates of prevalence, detection and management were similar between Black Caribbean and White English patients. In the multivariate analysis, ethnicity, employment and age all played a significant independent role in predicting probable prevalence. The patients' reported decision to talk to their GP about psychological problems was the main predictor of detection. Ethnicity did not independently predict detection, but Black African cases were less likely to say that they would talk to their GP about psychological problems. GPs' identification indices mirrored probable prevalence, suggesting that GPs were more sensitive to detecting psychiatric illness in individuals belonging to groups which commonly presented as symptomatic. CONCLUSIONS: The findings suggest that in General Practice the prevalence of common mental disorders, their detection and management in Black Caribbeans are similar to those in White English, but that Black Africans have lower prevalence, are less likely to be detected and are less likely to receive active management. The study of GP consulters presents problems for the interpretation of these results and it may be that Black Africans with psychological problems are less likely than their Caribbean and English counterparts to attend their GP, and less willing to speak to them about these problems when they do. Future similar studies should distinguish Black African and Black Caribbean subjects in their analyses, as categories such as 'Afro-Caribbean' may mask important differences in attitudes and illness behaviour.  相似文献   
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The aim of this study was to compare the effectiveness of an automatic flossing device to manual flossing. A total of seventy adult subjects (20 males and 50 females) were stratified into two groups balanced for age, sex, modified gingival index (MGI), plaque index (PI) and bleeding sites (Eastman Bleeding Index) using screening data. One group was randomly assigned the automatic power flosser and the other group was assigned manual dental floss. The subjects were instructed to brush their teeth twice a day (in the morning and before bedtime) for 30 seconds using the provided manual toothbrush and toothpaste. They were also to use their assigned dental floss or automatic power flosser once in the morning following toothbrushing. There was no significant difference between manual flossing and automatic flossing with respect to the MGI and the BI. There was, however, a significant difference at day 15 in the PI; however, this difference was only 0.73%. There was no significant difference in the PI at day 30 between the two techniques. The statistically significant difference noted in the interproximal PI at both day 15 and day 30 was less than 2%. Since the differences in plaque scores between the groups were so small, there was no apparent impact on gingival health since both flossers resulted in similar health benefits. Since there was a marked preference for the automatic flosser, patient compliance with the automatic flossing device may be better than with manual floss. Therefore, overall gingival health may benefit from this device.  相似文献   
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