Automatic recording of prothrombin times and other coagulation tests in multiple samples.
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Autoanalysis↗
Biomedical subjects
J S Jackson
Publications and source records attributed to J S Jackson.
Diagnosis of metachronous contralateral breast cancer.
The purpose of this study was to compare the characteristics of primary breast cancers (PBCs) and metachronous contralateral breast cancers (MCBCs). Between 1984 and 1996, 236 women treated with curative intent for PBC who developed a MCBC >6 months after initial diagnosis (without previous evidence of distant metastases) were retrospectively evaluated for clinical and pathologic characteristics and method of diagnosis of their tumors. There were more noninvasive cancers among the MCBCs than the PBCs (11.4% and 5.1%, respectively, p < 0.02). Among the invasive cancers, the mean size of the MCBCs was smaller than the PBCs (1.94 versus 2.55 cm, p < 0.001). MCBCs were more likely than PBCs to be mammographically detected (46.2% versus 19.9%, p < 0.001). Tumor size was correlated with the method of diagnosis. The mean tumor size was 1.39, 2.02, and 2.69 cm for mammogram-, physician-, and patient-detected tumors, respectively. Among patients having axillary lymph node dissections, mammogram- and physician-detected tumors were less likely to have lymph node metastases than patient-detected tumors (22.0% versus 41.2%, p < 0.005). Regular follow-up of breast cancer patients diagnoses MCBCs when they are smaller and less likely to have nodal metastases than PBCs mainly because of early mammographic detection.
Adult↗
Life satisfaction among black urban elderly.
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Black or African American↗
The relationship between social ties and survival among black and white breast cancer patients. National Cancer Institute Black/White Cancer Survival Study Group.
The relationship between social ties, stage of disease, and survival was analyzed in a population-based sample of 525 black and 486 white women with newly diagnosed breast cancer. There were significant differences between the two race groups in reported social ties. Using logistic regression to adjust for the effects of age, race, study area, education, and the presence of symptoms, there was little or no evidence for an association between individual network measures of social ties and stage of disease. However, a summary measure of social networks was found to be associated modestly with late stage disease, attributable in part to significantly more advanced disease among black, but not white, women reporting few friends and relatives [relative risk (RR) = 1.8; 95% confidence interval (CI) = 1.1-3.0]. With adjustments for differences in stage of disease and other covariates, and with the use of Cox proportional hazards modeling to estimate hazard ratios, the absence of close ties and perceived sources of emotional support were associated significantly with an increased breast cancer death rate. White women in the lowest quartile of reported close friends and relatives had twice the breast cancer death rate of white women in the highest quartile (RR = 2.1; 95% CI = 1.1-4.4). Notably, both black and white women reporting few sources of emotional support had a higher death rate from their disease during the 5-year period of follow-up (RR = 1.8; 95% CI = 1.3-2.5).(ABSTRACT TRUNCATED AT 250 WORDS)
Adult↗
Racism and the physical and mental health status of African Americans: a thirteen year national panel study.
This paper examined the relationships between the experiences and perceptions of racism and the physical and mental health status of African Americans. The study was based upon thirteen year (1979 to 1992), four wave, national panel data (n = 623) from the National Survey of Black Americans. Personal experiences of racism were found to have both adverse and salubrious immediate and cumulative effects on the physical and mental well-being of African Americans. In 1979-80, reports of poor treatment due to race were inversely related to subjective well-being and positively associated with the number of reported physical health problems. Reports of negative racial encounters over the 13-year period were weakly predictive of poor subjective well-being in 1992. A more general measure of racial beliefs, perceiving that whites want to keep blacks down, was found to be related to poorer physical health in 1979-80, better physical health in 1992, and predicted increased psychological distress, as well as, lower levels of subjective well-being in 1992. In conclusion, the authors suggested future research on possible factors contributing to the relationship between racism and health status among African Americans.
Adaptation, Psychological↗
Racism and the mental health of African Americans: the role of self and system blame.
The research on external (social system) and internal (personal) attributions to mental health outcomes for African Americans is reviewed. Although many blacks have aspirations that they are unable to achieve, the motivational and mental health consequences of this situation are unclear. Several researchers have suggested that it is adaptive for African Americans to reduce striving effort and bring personal goals more in line with the objective realities of an unfair opportunity structure. Others have proposed that because an unjust system is to blame, the most appropriate response is to work collectively with other group members to make the system more open to opportunities for advancement. Epidemiologic research on the relationship of internal-external locus of control to mental disorder has generally found that being internal has positive mental health effects; while having an external orientation is detrimental. This paper addresses these issues by demonstrating that the psychiatric-epidemiologic and the race-consciousness literatures lead to opposite predictions about the relationship of external attributions (fatalism and system blame) to mental health. The article concludes with a series of issues that need to be addressed in order to advance knowledge about social and psychological risk factors for psychiatric disorders in African Americans.
Black or African American↗