Assessment of Occupational Radiation Exposures at Ghana Research Reactor-1 Facility.

The annual occupational doses for workers at the Ghana Research Reactor-1 facility were assessed for the period 2018-2021. The dose records of monitored staff were retrieved and analysis done for dose distribution and collective effective doses. Thermoluminiscent dosimeters were used to monitor the occupational exposures. The dosimeters were evaluated for the cumulative radiation dose levels using the Harshaw 6600 TLD reader system. Annual dose of 1.52 mSv/year was the maximum acquired by an individual. An annual average effective dose range of 0.20-1.36 mSv was determined for all workers. The annual total collective effective dose was established to be in the range of 0.40-10.08 man-Sv. The 20 mSv annual limit for occupational exposure was not exceeded for monitored workers. The assessment shows that the GHARR-1 facility, in terms of radiation health effects, is a favorable environment for workers since exposures are mostly below occupational exposure limit.

Psychometric Properties of a Scale Measuring Patients' Perceptions Regarding Physical Activity Counseling by Physicians.

This study developed a scale measuring patients' perceptions regarding physical activity (PA) counseling by physicians. Confirmatory factor analysis and multiple linear regression analysis were used to assess psychometric properties. The first factor extracted was "PA recommendation," which accounted for a variance of 45.1% out of total variance of 76.3% and comprises 5 items. The final scale yielded satisfactory psychometric properties including internal consistency (Cronbach's α = 0.75), convergent validity, discriminant validity, and predictive validity. Nine (9) items that makeup two factors (i.e., PA recommendation and follow-up) are potential measures of patients' perceptions regarding PA counseling by physicians in healthcare.

Construction of a Scale Assessing Patients' Perceptions Regarding Sanitation and Hygiene in a Clinical Setting.

OBJECTIVE: This study attempted to develop a scale, hereby called HYGIENICCARE, that assesses patients' perceptions regarding sanitation and hygiene in a healthcare environment. It also evaluated the relationship between the new measure and a previously validated scale measuring healthcare quality. METHODS: This study was a psychometric test in which we constructed a new survey and administered the survey to patients in wards and the outpatient departments of 5 hospitals in Accra North. A robust procedure, including a review of selected questions by an expert panel, was followed to determine the original bank of items of the instrument. Principal component analysis with varimax rotation was used to select items for the scale, whereas confirmatory factor analysis was used to assess construct validity. Multiple linear regression was used to examine the association between the new scale and an existing measure of healthcare quality. RESULTS: A bank of 10 items was determined through a systematic review of the literature and the engagement of 7 expert reviewers. Through principal component analysis, the items were reduced to 9. Principal component analysis yielded 2 factors: "environment and equipment" and "personnel and process," which both explained 82% of the total variance and produced Cronbach α coefficients of 0.912 and 0.86, respectively. Confirmatory factor analysis confirmed the 2-factor solution and produced satisfactory discriminant validity and convergent validity indicators. The 2 domains of the new scale were highly correlated with all dimensions of a scale measuring healthcare quality called HEALTHQUAL (r ≥ 0.76, P < 0.001). In multiple linear regression, each of the 2 domains of HYGIENICCARE explained a total variance of 41% or greater in all domains of HEALTHQUAL (P < 0.001). CONCLUSIONS: We developed a brief scale measuring hospital hygiene and sanitation that correlated well with an existing measure of healthcare quality. This effort shows that the new tool is a valid measure of patient-perceived hospital hygiene and sanitation.

Assessment of radiological consequence of a hypothetical accident at the Ghana Research Reactor-1 facility based on terrorist attack.

The International Atomic Energy Agency defines a nuclear and radiation accident as an occurrence that leads to the release of radiation causing significant consequences to people, the environment, or the facility. During such an event involving a nuclear reactor, the reactor core is a critical component which when damaged, will lead to the release of significant amounts of radionuclides. Assessment of the radiation effect that emanates from reactor accidents is very paramount when it comes to the safety of people and the environment; whether or not the released radiation causes an exposure rate above the recommended threshold nuclear reactor safety. During safety analysis in the nuclear industry, radiological accident analyses are usually carried out based on hypothetical scenarios. Such assessments mostly define the effect associated with the accident and when and how to apply the appropriate safety measures. In this study, a typical radiological assessment was carried out on the Ghana Research Reactor-1. The study considered the available reactor core inventory, released radionuclides, radiation doses and detailed process of achieving all the aforementioned parameters. Oak Ridge isotope generation-2 was used for core inventory calculations and Hotspot 3.01 was also used to model radionuclides dispersion trajectory and calculate the released doses. Some of the radionuclides that were considered include I-131, Sr-90, Cs-137, and Xe-137. Total effective doses equivalent to released radionuclides, the ground deposition activity and the respiratory time-integrated air concentration were estimated. The maximum total effective doses equivalent value of 5.6 × 10-9 Sv was estimated to occur at 0.1 km from the point of release. The maximum ground deposition activity was estimated to be 2.5 × 10-3 kBq/m3 at a distance of 0.1 km from the release point. All the estimated values were found to be far below the annual regulatory limits of 1 mSv for the general public as stated in IAEA BSS GSR part 3.

Development of a Scale Measuring Nurses' Physical Activity Counseling in a Primary Care Facility: Implications for Healthcare Quality.

This study constructed a scale for measuring nurses' physical activity (PA) counseling in healthcare from the points of view of regular patients. Confirmatory factor analysis produced a two-factor solution with 7 items. The first factor extracted was "follow-up", which accounted for a variance of 44.5% out of a total variance of 64.8% and comprises 4 items. The second factor, "PA recommendation", accounted for a variance of 20.3% and comprises 3 items. The final scale had a good internal consistency (Cronbach's α = 0.75; factor loading ≥0.50) as well as satisfactory validity indicators.

ADAPTED SERVQUAL: A Health Service Quality Scale Incorporating Indicators of Sanitation and Hygiene.

BACKGROUND AND OBJECTIVES: Many scales have been developed to measure health care quality over the years, but no scale available today incorporates all important indicators of sanitation and hygiene in health care. This study therefore assessed the psychometric properties of an adapted scale, hereby called ADAPTED SERVQUAL, in an attempt to provide a scale that includes relevant indicators of hospital hygiene and sanitation. METHODS: The setting of the study was low- and medium-capacity hospitals in the Greater Accra Region of Ghana. Patients in wards and outpatient departments in the hospitals participated in the study. We used relevant statistical tools to estimate the psychometric properties of ADAPTED SERVQUAL. To understand the relative importance of the new scale, we compared and related it to a recent scale, HEALTHQUAL. RESULTS: Principal component analysis yielded 6 factors: "tangibles," "reliability," "responsiveness," "assurance," "empathy," and "sanitation and hygiene," which explained 84% of the total variance. ADAPTED SERVQUAL has a good internal consistency (Cronbach α = 0.96). Confirmatory factor analysis confirmed the 6-factor solution and produced satisfactory discriminant validity and convergent validity indicators. The adapted scale was highly correlated with all dimensions of HEALTHQUAL, including continuous quality improvement (r ≥0.75, P < .001). In multiple linear regression, the 5 domains of HEALTHQUAL explained 59% of the variance in ADAPTED SERVQUAL (P < .001). CONCLUSIONS: The study concluded that 8 items that make up a single factor (ie, sanitation and hygiene) and contribute most of the total variance satisfactorily fit into the SERVQUAL scale as additional indicators of health care quality.