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Biomedical subjects

J S Jackson

Publications and source records attributed to J S Jackson.

At least 37 records · Page 2Linked to original sources
PubMed1996

Vital status in the National Panel Survey of Black Americans: a test of the National Death Index among African Americans.

To test the specificity of the National Death Index (NDI), information was submitted on 157 randomly selected respondents from the National Panel Survey of Black Americans (NPSBA) who were known to be living as of 1992. Information also was submitted for 153 known deceased respondents from the panel survey to test the sensitivity of the NDI. The NDI was very sensitive; however, specificity was somewhat less impressive. Although we found the NDI/NPSBA match to be highly accurate, there was a nontrivial number of false positives.

Black or African American↗
PubMed1995

Relative biological effectiveness of tritium for induction of myeloid leukemia in CBA/H mice.

To help resolve uncertainties as to the most appropriate weighting factor for tritium beta rays, a large experiment was carried out to measure the relative biological effectiveness (RBE) of tritiated water compared to X rays for the induction of myeloid leukemia in male mice of the CBA/H strain. The study was designed to estimate the lifetime incidence of myeloid leukemia in seven groups of about 750 mice each; radiation exposures were approximately 0, 1, 2 and 3 Gy both for tritiated water and for X rays. The lifetime incidence of leukemia in these mice increased from 0.13% in the control group to 6-8% in groups exposed to higher radiation doses. The results were fitted to various equations relating leukemia incidence to radiation dose, using both the raw data and data corrected for cumulative mouse-days at risk. The calculated RBE values for tritium beta rays compared to X rays ranged from 1.0 +/- 0.5 to 1.3 +/- 0.3. A best estimate of the RBE for this experiment was about 1.2 +/- 0.3. A wR value of 1 would thus appear to be more appropriate than a wR of 2 for tritium beta rays.

Animals↗
PubMed1991

AIDS survey methodology with black Americans.

Unique substantive and methodological issues are involved in conducting survey research on sexual and HIV risk related behaviors among Americans of African descent. Problem conceptualization, sampling, design of instruments, mode of data collection, interviewer/respondent characteristics, community resistance, and data analysis and interpretation are discussed. The lack of survey research on sensitive health issues is noted. Possible methods for addressing these issues are drawn from the experiences of the authors in conducting national research on the general and at risk Black community populations. It is concluded that attention to these issues can substantially improve the quality of research on AIDS related behaviors on Black communities. Finally, it is suggested that behavioral theories and sophisticated methodological and analytic approaches, sensitive to the special cultural dimensions of racial/ethnic life in the United States, would contribute substantially to the scientific armamentarium needed to successfully meet the challenge of the AIDS epidemic.

Acquired Immunodeficiency Syndrome↗
PubMed1989

The influence of racial factors on psychiatric diagnosis: a review and suggestions for research.

Research on race and diagnosis initially focused on black-white differences in depression and schizophrenia. Statistics showing a higher treated prevalence of schizophrenia and a lower prevalence of depression for blacks seemed to support the claim that blacks did not suffer from depression. Others argued, however, that clinicians were misdiagnosing depression in blacks. This article reviews empirical studies of racial differences in individual symptoms and summarizes the evidence on misdiagnosis. It argues that more attention must be paid to resolving two contradictory assumptions made by researchers working in the area of race and diagnostic inference: (1) blacks and whites exhibit symptomatology similarly but diagnosticians mistakenly assume that they are different; (2) blacks and whites display psychopathology in different ways but diagnosticians are unaware of or insensitive to such cultural differences. The article concludes with suggested research directions and a discussion of critical research issues.

Black or African American↗
PubMed1989

Age differences in productive activities.

Age differences in productive contributions through both paid and unpaid work are examined in commensurate terms. Data are from a nationwide household survey of 3,617 adults age 25 and older conducted in 1986. Older Americans participate in many unpaid productive activities at levels that are comparable to those reached by middle-aged and younger Americans; these activities include volunteer work in organizations, informal help to others, maintenance and repair of their home and possessions, and housework. Relatively few older Americans spend any time participating in paid work and unpaid rearing of children. Largely because of the cessation of paid work and child care, older Americans spend less time overall in productive activities. Women and men spend about equal time in productive activities, but women spend more of it in unpaid work and less of it in paid work. The difficulties with using paid work as the major indicator for describing productivity across the life span are discussed.

Activities of Daily Living↗
PubMed1989

Hypertension in blacks: psychosocial and biological perspectives.

The extraordinarily high rate of hypertension in blacks remains a significant public health issue in most industrialized societies. Research has focused on the investigation of racial differences in biological, nutritional, behavioural and psychological, and social factors in an effort to identify the causes of this high morbidity rate. Thus far, research suggests important racial differences in renal functioning, particularly in sodium metabolism and plasma renin activity, as well as potassium intake and sodium:potassium ratio. Behavioral factors such as anger-coping style and John Henryism, and social factors such as socioeconomic status, socioecological stress, social support, urban-rural residence, and family interaction patterns have also been identified as potential contributors. Finally, emerging research paradigms such as laboratory stress reactivity and 24-h ambulatory monitoring of blood pressure may provide promising leads about the interaction between these effects and hypertension in black populations.

Black or African American↗
PubMed1987

The health, physical functioning, and informal supports of the black elderly.

Among the elderly population, blacks are increasing more rapidly--and perhaps differently--than whites. Cross-sectional data from two unique surveys describe their heterogeneity in health, physical functioning, and social networks at "younger," middle, and "older" ages. The relation between age and these factors may be nonlinear; indeed, evidence supports the contention of a racial "crossover" at advanced ages. Life experiences--ecological, social, economic, and familial--of successive cohorts are likely to pose different problems for elderly blacks in the future. Further research into these differences should inform public policy.

Activities of Daily Living↗
PubMed1987

Barriers to medical care among adult blacks: what happens to the uninsured?

This article examines perceived barriers to the utilization of medical care among the uninsured in a national sample of adult (18 years and older) black Americans. Uninsured respondents were more likely to feel that it was difficult for them to receive medical care, and that they needed more care than they were obtaining. The uninsured in comparison with insured respondents were less likely to utilize private, office-based physicians. Insurance coverage, however, made no difference in hospital emergency room use for health care. The results suggest that the lack of health insurance places large numbers of blacks at a severe disadvantage in obtaining needed health care.

Adolescent↗
PubMed1986

Aged blacks' choices for an informal helper network.

Research on the support networks of impaired elderly adults suggests that membership in sociodemographic subgroups influences use of specific informal helpers. This study explored the relationships of sociodemographic, health, and family factors to informal helper choice among a nationally representative sample (N = 581) of older (55 years and above) blacks (National Survey of Black Americans). Nine categories of helpers were examined: spouse, son, daughter, father, mother, brother, sister, friend, and neighbor. Logistic regression analyses revealed that marital status is important in selecting the categories of sister, friend, and neighbor. Presence of children decreased the likelihood that siblings and friends would be chosen. Perceived family closeness facilitated the selection of siblings but inhibited the choice of friends. Regional differences suggest a greater likelihood of selecting the categories of sister, friend, and neighbor among Southern residents.

Black or African American↗
PubMed1986

Uninsured risk groups in a national survey of black Americans.

Comprehensive data on risk groups within the black population are lacking because of the small number of black Americans usually sampled in national health surveys. Health policy, planning, and service delivery can be substantially improved by having data that reveal the specific health concerns of blacks within these different risk groups. This paper describes the demographic characteristics of the uninsured in a national sample of adult (18 years and older) black Americans. The poor, farmers, unemployed, young (18 to 25 years) and pre-retired (55 to 64 years) were the most likely to be uninsured. Persons living in the South and in rural locations were also more likely to be uninsured than blacks in the North and in urban areas. Implications for health policy and health care delivery are discussed.

Adolescent↗
PubMed1985

Size and composition of the informal helper networks of elderly blacks.

Research on the informal support networks of older persons recognizes that network size and composition (i.e., family vs. nonkin) may have important consequences for care. Factors that determine these aspects of networks among older blacks, however, have not been explored systematically. The present study examined the relationship of a group of sociodemographic, health, family, and availability factors to the size and composition of the informal support network. The data were taken from the National Survey of Black Americans and constitute a nationally representative sample (N = 581) of older blacks (55 years and older). The results for several of the sociodemographic factors (i.e., sex and marital status) are consistent with previous work. Regional differences in network dimensions, however, suggest new areas of inquiry. The findings underscore the importance of availability and family factors in support relationships and the relative ineffectiveness of health factors as predictors of network size and composition.

Black or African American↗
PubMed1984

The use of informal and formal help: four patterns of illness behavior in the black community.

Most studies of professional help use among black Americans fail to describe this group's relationship to blacks experiencing distress but not requesting professional help, and generally ignore the salience of informal social support processes. A more comprehensive understanding of black help-seeking behavior would come from an approach which describes both the users and nonusers of formal helping services, and examines the benefits derived from the interpersonal relationships that comprise black friend- and kin-based networks. These analyses focused on four patterns of informal and formal help use in the National Survey of Black Americans. The findings indicated that most people use informal help only, or they use informal and professional help together. In addition, gender, age, income, and problem-type were significantly related to the different patterns of illness behavior. The implications of these findings for help seeking in the black community were discussed.

Adolescent↗
PubMed1983

Stress, coping, and Black mental health: preliminary findings from a national study.

Despite the fact that blacks are disproportionately exposed to social conditions considered to be antecedents of psychiatric disorder, epidemiologic studies have not conclusively demonstrated that blacks exhibit higher rates of mental illness than whites. The present paper employed a research approach which considered not only rates of psychological distress, but also the stressors that blacks face and the various coping strategies used to adapt to those stressors. The data were obtained from the National Survey of Black Americans, the first study of a national probability sample of the adult black population. The information on mental health and coping was collected within the context of a single stressful personal problem. The analysis indicates that prayer was an extremely important coping response used by blacks especially among those making less than $10,000, above the age of 55 and women. The informal social network was used quite extensively as a means of coping with problems. This was true for all sociodemographic groups studied. The young (18-34) were less likely than those age 35 and above to seek professional help, while women were more likely than men to seek formal assistance. Income was not related to professional help seeking. With respect to the use of specific professional help sources, hospital emergency rooms, private physicians and ministers were used most frequently. The implications of these findings for research on black mental health and primary prevention are discussed.

Black or African American↗