The inconsistent definitions used for tuberculosis in the medical literature.

In order to assess the confusion attendant with current definitions of extrapulmonary tuberculosis, pleural and miliary disease, a set of 37 papers published which analyzed disease states were assessed for how the terms adhered to official definitions of the American Thoracic Society, the World Health Organization, and the Centers for Disease Control. The findings showed uncertainties in the classification of extrapulmonary disease, a frequent inconsistency in the inclusion of pleural disease within pulmonary rather than extrapulmonary disease, and the ambivalent use of the terms pleural and disseminated tuberculosis. Further attention by editors and authors is needed in the use of tuberculosis definitions.

The bottom quartile for health indices in America vs Europe.

The inequities in health outcomes in different parts of the developed world merit further analysis. An index comprising mortality and morbidity factors was composed for American states and European nations. Multiple factors and bottom quartile status were analyzed by regression methodology.

The extrapulmonary dissemination of tuberculosis: A meta-analysis.

Background And Objective: The epidemiology of the forty percent of tuberculosis patients who present with disseminated and/or extrapulmonary disease is in need of further study. Further study of such dissemination using published data from international indices may provide data which assist with control of tuberculosis.

Methods: For each clinical or epidemiologic factor studied, summary odds ratios and corresponding 95% confidence intervals were calculated showing associations between such factors and documented extrapulmonary dissemination of tuberculosis.

Can our understanding of informed consent be strengthened using the idea of cluster concepts?

Informed consent is thought to exist as a well-defined entity. Altered concepts of patient autonomy, differential cultural understanding of the entity, and the failure of clients to distinguish between research and clinical ethics, and various hierarchical cultural views of informed consent all suggest that alterations may be needed in the traditional concept. By using the methodology outlined by Gasking in which he defines the idea of "cluster concepts," one may be able to enlarge the definition and augment the understanding of the informed consent and include the time and culture-specific variants which exist.

Key determinants of AIDS impact in Southern sub-Saharan Africa.

To investigate why Southern sub-Saharan Africa is more severely impacted by HIV and AIDS than other parts of sub-Saharan Africa, I conducted a review of the literature that assessed viral, host and transmission (societal) factors. This narrative review evaluates: 1) viral factors, in particular the aggregation of subtype-C HIV infections in Southern sub-Saharan Africa; 2) host factors, including unique behaviour patterns, concomitant high prevalence of sexually transmitted diseases, circumcision patterns, average age at first marriage and immunogenetic determinants; and, 3) transmission and societal factors, including levels of poverty, degrees of literacy, migrations of people, extent of political corruption, and the usage of contaminated injecting needles in community settings. HIV prevalence data and published indices on wealth, fertility, and governmental corruption were correlated using statistical software.