Application of the Attitude-Social Influence-Efficacy Model to Condom Use Among African-American STD Clinic Patients: Implications for Tailored Health Communication

The purpose of the current investigation was to apply the attitude-social influence-efficacy (ASE) model to achieve a theory-based understanding of condom use among low income, heterosexually active African-American STD clinic patients. N = 293 participants were recruited from a large, publicly-funded metropolitan STD clinic in the Southeastern United States and surveyed using an ACASI computer program. Results indicated that several ASE variables exhibited meaningful relationships with condom stages of change in univariate analyses, replicating patterns found in previous research. Fewer variables remained significant in multivariate analyses, however. There was also some support for the proposition that early stage movement (e.g., Precontemplation to Contemplation) is based more upon perceptions of condom use (e.g., pros, perceived norms), whereas later stage movement (e.g., Preparation to Action/Maintenance) is based more upon perceived and actual skills acquisition (e.g., condom self-efficacy, negotiation strategies). Results varied with regard to main and casual condom stage of change. Implications for developing tailored HIV prevention interventions with heterosexual African-Americans are discussed.     

Factors Influencing Trust in Agencies That Disseminate Tobacco Prevention Information

Several health-related agencies administer national and targeted public education campaigns to provide health information and change health-related behaviors. The trust the public has in these agencies as the source of the message impacts the effectiveness of their communication campaigns. In this study, we explore the perceived trust of agencies that communicate health messages in the tobacco control field. As part of a larger tobacco regulatory science study, we conducted six 90-min focus groups comprising 41 participants. Five main themes emerged pertinent to the agency: (1) its integrity, (2) its competence, (3) its motives, (4) how it is portrayed in the media, and (5) skepticism and mistrust about it. Given the significant resources spent on health messaging to the public and potential benefits offered by this communication, an understanding of public trust in the agencies as the source of health messages is important. Findings suggest health information may be ignored or discounted when there is mistrust in the agency sending those messages.     

Systematic review of HIV prevention interventions in China: a health communication perspective

Objectives

To examine whether communication strategies and principles have been utilized in the HIV prevention intervention programs conducted in China.

Methods

Comprehensive literature searches were conducted using PsycINFO, Medline, and Academic Search Complete with combinations of a number of keywords. Studies were included if they (1) were conducted in China and published prior to October 2011; (2) tested interventions promoting HIV/sexual risk reduction; and (3) reported empirical outcome evaluations on HIV knowledge, condom use and other condom-related variables. Data on 11 dimensions were extracted and analyzed, including formative research, theory, message targeting, messenger and channels, process evaluation, evaluation design, outcome measures.

Results

The majority of the 45 intervention studies were not theory-based, did not report conducting formative research or process evaluation, used pretest–posttest control group designs, combined nonmedia channels, printed and visual materials, and employed HIV knowledge and condom use as outcome measures.

Conclusions

Many HIV prevention interventions in China have been successful in reducing HIV risk-related outcomes. This literature has its weaknesses; however, the current review illuminates gaps in the literature and points to important future directions for research.     

Theory development in health promotion: are we there yet?

Theory development has not proceeded at a pace commensurate with the evolution of health promotion practice. At least three examples of this disparity are apparent: (1) theory is developed in an evidence-based paradigm rather than a practice-based paradigm, (2) a substantial majority of health behavior theories exist at the individual level, thereby neglecting contextual realities that shape behavior, and (3) “accessibility” levels of theory to practitioners may be quite low in comparison to the growing demands to prevent disease through expanding health promotion practices. The challenges of health promotion demand a great deal more attention to developing theories that reflect the reality of broad influences on health behavior. One critical question that must be answered involves setting limits regarding the realistic role of behavioral interventions in public health practice. The evolution of theory should be practice-based, largely ecological in nature, and the resulting theories should be easily accessible to practitioners.     

An in vitro study into the corrosion of intra-oral magnets in the presence of dental amalgam

The aim of this investigation was to study the corrosion behaviour and products of uncoated neodymium-iron-boron magnets in the presence of dental amalgam. Microcosm plaques were grown on discs of neodymium-iron-boron magnets or amalgam in a constant depth film fermentor. The biofilms were supplied with artificial saliva and growth was determined by viable counting. The results showed that the neodymium-iron-boron magnets corroded with an average daily weight loss of 0.115 +/- 0.032 per cent. However, when the magnets were in close proximity to the amalgam the amount of corrosion was reduced to a daily loss of 0.066 +/- 0.023 per cent. The highest loss of constituent elements from the corrosion products of the magnets was observed for iron. The composition of the microcosm plaques altered markedly between the two materials with less streptococci and more Veillonella spp. present in the biofilms grown on magnets in the presence of amalgam. The corrosion of neodymium-iron-boron magnets is limited and in the presence of amalgam is reduced further. This suggests that amalgam present in the mouth will not cause an increased clinical risk in terms of biocompatibility with neodymium-iron-boron magnets.     

The durability of parylene coatings on neodymium-iron-boron magnets

A parylene coating is frequently used to prevent corrosion of neodymium-iron-boron magnets when they are used intra-orally. This in vitro study was designed to test the durability of parylene coating in a simulated oral environment. Single and double parylene-coated magnets were subjected to grinding and crushing forces in an industrial ball mill. The results demonstrate that abrasion and wear was visible around the edges after 1 hour of testing, with a breach of the coating noted under high magnification scanning electron microscopy (SEM). The conclusion of the study is that parylene coating is unlikely to withstand intra-oral forces. The shape of the magnets, the manufacturing process involved in their production, and the thickness of the parylene coating are important factors to consider with respect to the durability of magnets used in the mouth.     

Dental anomalies in cleft lip and palate: an unusual case

A cleft palate case is reported in which there is an unusual pattern of hypodontia involving aplasia of the primary second molars, but development of the corresponding second premolars. This paper discusses some of the implications of this situation and stresses the need for very thorough clinical and radiographic examination.