Comparison of the demographic and social profile of blood donors and nondonors in Brazil

Blood donation practice and its associated factors among Polish population: secondary data analysis

Introduction

Blood transfusion is an intervention widely used in therapeutics (e.g., in the perioperative period), thus, knowledge about factors associated with blood donation is important. The aim of this study was to investigate the impact of sociodemographic factors, personal values and life satisfaction on blood donation in Poland.

Methods

Secondary analysis of data. A multiple logistic regression was carried out to assess the relationship between sociodemographic factors, life satisfaction (Satisfaction with Life Scale), personal values (Personal Values List) and blood donation.

Results

Of the 770 respondents aged 18-65 years, 262 respondents (34%) donated blood at least once in their lives. Respondents who believed that blood donation is safe (OR = 1.71; Cl95%: 1.20 to 2.43), were male (OR = 1.47; Cl95%: 1.26 to 1.72), married (OR = 1.31; Cl95%: 1.11 to 1.54) and those with high school education (OR = 0.81; Cl95%: 0.66 to 0.99) were more often blood donors.

Conclusion

Perceived blood donation safety and sociodemographic factors such as gender, marital status, and education level may influence blood donation. Health education is necessary to increase knowledge and shape positive attitudes toward blood donation among the society.

Influence of risk perception on attitudes toward blood donation among Brazilian men who have sex with men who donated blood

BACKGROUND

We hypothesize that awareness of individuals' risk behaviors may influence aspects of attitude toward blood donation (i.e., intentions and self-efficacy). Investigating this association in the population of MSM was the objective of the present study.

STUDY DESIGN AND METHODS

This is a cross-sectional study based on an open web survey. The online survey was developed and applied on the Research Electronic Data Capture (REDCap) platform. The study's information, invitation to participate, and link to access the online survey were disseminated using social media. Analyses were performed using structural equation modeling.

RESULTS

A total of 764 young adults MSM participated, with the majority self-reporting as homosexual, single, in good health, and having completed higher education. A total of 297 (39.5%) reported having donated blood at least once in their lives. Among blood donors, 72.0% admitted to lying about their sexual behavior during the blood donation clinical screening interview; 81.0% did not believe that their behaviors put them at risk for HIV infection; 83.7% believed that their blood is safe enough to be transfused. Structural equation analysis provided evidence that the perception of being at risk for HIV and the perception of having non-safe blood to be transfused contributed to an attitude against future blood donation (explained variance 50%).

DISCUSSION

Attitude plays an important role in blood donation decision-making by young adults MSM. This is the first study to provide evidence that the self-perceptions of being at risk for HIV and having non-safe blood may deter MSM from blood donation.

Trends in unsuitability for blood donation in the Brazilian Amazon

Introduction

Sociodemographic and behavioral factors are usually associated with the unsuitability to donate blood. Understanding the reasons behind the exclusion of blood bags is crucial for reducing donor deferral rates. This study aimed to characterize the profile of unsuitable donors in the Blood Center of the northern Brazilian state of Amazonas.

Methods

This is a retrospective study, based on documentary analysis of electronic medical records obtained in the Hematology and Hemotherapy Foundation of the state of Amazonas. This study included all individuals with complete medical records (n = 87,463) who tried to donate blood between 2017 and 2019.

Results

The overall rate of donor unsuitability was 19.12% (n = 16,627) and the main reason was poor nutritional status (15.17%), followed by chronic health problems (11.40%), risky sexual behavior (9.5%) and exposure to risk (8.83%). High blood pressure figured as the leading cause of unsuitability among chronic health conditions (85.19%), while having sex with multiple partners (92.63%) was the main sexual risk behavior. The risk of exposure to malaria was responsible for 99.45% of unsuitability among those who were unsuitable due to exposure to risk factors. Deferral rates were associated with increasing age and replacement donation, which was the predominant type of donation. Women had the highest rates of unsuitability, mainly during the first donation (37.04%).

Discussion

This study provides the first known profile of blood donor unsuitability in the Brazilian Amazon and raises awareness of the region-specific needs that must be met to reduce blood donor unsuitability.

Blood Donation Fear, Perceived Rewards, Self-Efficacy, and Intention to Return Among Whole Blood Donors in China: A Social Cognitive Perspective

With the increasing demand from aging population and seasonal blood shortage, recruiting and retaining blood donors has become an urgent issue for the blood collection centers in China. This study aims to understand intention to donate again from a social cognitive perspective among whole blood donors in China through investigating the association between the blood donation fear, perceived rewards, self-efficacy, and intention to return. A cross-sectional survey was conducted in six cities, which are geographically and socioeconomically distinct areas in Jiangsu, China. Respondents completed a self-administrated questionnaire interviewed by two well-trained medical students. A total of 191 blood donors were included in the current study. Descriptive analysis, correlation analysis, and a generalized linear regression model were used to explore the association between demographic characteristics, psychological factors, and intention to donate again. After controlling other covariates, donors with higher fear scores reported lower intention to return (p = 0.008). Association between self-efficacy and intention to return was statistically significant (p < 0.001), whereas the association between intrinsic rewards (p = 0.387), extrinsic rewards (p = 0.939), and intention to return were statistically insignificant. This study found that either intrinsic rewards or extrinsic rewards are not significantly associated with intention to donate again among whole blood donors in China, and fear is negatively associated with intention to donate again. Therefore, purposive strategies could be enacted beyond appeals to rewards and focus on the management of donors’ fear.

Voluntary and non-voluntary blood donations among doctors

BACKGROUND

Physicians may be an important source of blood donations as they are more likely to be familiar with the importance of donating and the donation process. The aim of this study is to report physicians' knowledge, attitudes, and practices towards voluntary and non-voluntary blood donations.

STUDY DESIGN AND METHODS

This was a cross-sectional study conducted at King Faisal Specialist Hospital and Research Centre (KFSH&RC), Saudi Arabia. One-hundred-and-sixteen physicians and dentists responded to an online structured questionnaire sent to their institutional emails.

RESULTS

Sixty-eight percent of participants (79% of males and 43% of females) reported previously having donated blood. Eighty-six percent of donors had previously donated on a voluntary basis, whereas 31% of donors had previously donated for a specific person. A recent donation within 5 years was associated with the younger age group and knowledge of the minimum interval between donations. Fifty-six percent of participants agreed with using replacement donations. Compared to participants in the youngest age group (25-35 years), older participants in the age groups (46-55 years) and (>55 years) were less likely to express intention to donate in the next 6 months (OR 0.289, P = .022 and OR 0.083, P = .004, respectively). Participants reporting poor nutritional status or other medical reasons as a barrier to donating blood were less likely to intend to donate (OR 0.146, P < .001). Among previous donors, intention to donate was associated with a recent donation within 1 year (OR 27.13, P = .002) and having had a pleasant donation experience (OR 14.98, P < .001).

CONCLUSION

Blood donation practices are strongly tied to physicians' gender and age and their knowledge of the donation process. The most significant barrier to blood donation was found to be nutritional and medical status.

Incentives and limitations of Greek blood donors: Application of the Health Belief Model in the design of recruiting strategies

Background

Studies of the behavior of blood donors suggest that the examination of their incentives and reported barriers could be utilized in designing targeted recruiting strategies and awareness-raising campaigns.

Methodology

Data was collected via a questionnaire based on the Health Belief Model (HBM), aimed to examine reported incentives, limitations, benefits, and self-efficacy of 261 blood donors at Thriasio General Hospital from January 1 to March 1, 2020, after required permission provided. The analysis was performed by the use of the SPSS statistical software. In addition, a Greek translation of the K6+ distress scale was provided.

Results

Our sample consisted of 261 blood donors, the majority of which were men (88.5%), 40-50 years old (36.4%), high school graduates (49.4%), and married (53.3%). Heightened awareness of increased blood needs and blood shortages was mentioned. 92.8% of respondents believe that blood donation is an act of contribution to society or beneficial for their health (86.6%). The limited working hours of blood donation services are the main obstacle mentioned by the participants (32.8%), while 80.7% emphasized the need for public information campaigns. Based on the K6 scale answers score, most participants are classified in the intermediate-risk category for Serious Mental Illness (SMI).

Conclusion

The study of beliefs and incentives of blood donors is a critical factor in developing an effective recruiting strategy in a volunteering frame. Public information campaigns regarding the blood donation process and reminders aiming at the return of blood donors after the necessary time interval could facilitate this effort.

Epidemiological risk factors associated with primary infection by Epstein-Barr virus in HIV-1-positive subjects in the Brazilian Amazon region

To identify the prevalence and risk factors for primary Epstein–Barr virus (EBV) infection in human immunodeficiency virus (HIV)-1-positive adult treatment-naïve patients between January 2018 and December 2019 in a state of the Brazilian Amazon region. A total of 268 HIV-1 positive patients and 65 blood donors participated in the study. Epidemiological data were obtained from medical records and through a designed questionnaire. EBV infection was screened by the semiquantitative detection of anti-viral capsid antigen (VCA) EBV IgM and IgG, followed by molecular detection of the EBNA-3C gene. The plasma viral loads of HIV-1 and EBV were quantified using a commercial kit. The prevalence of primary coinfection was 7.12%. The associated risk factors were education level, family income, history of illicit drug use and sexually transmitted infections, homosexual contact and condom nonuse. Approximately 58.5% had late initiation of highly active antiretroviral therapy, which influenced the risk of HIV-EBV 1/2 multiple infection (odds ratio (OR): 4.76; 95% CI 1.51–15.04) and symptom development (p = 0.004). HIV viral load was associated with patient age (OR: 2.04; 95% CI 2.01–2.07; p = 0.026) and duration of illicit drug use (OR: 1.57; 95% CI 1.12–2.22; p = 0.0548). EBV viral load was associated with younger age (OR: 0.82; 95% CI 0.79–1.03; p = 0.0579). The replication of both viruses was associated with symptom development (HIV = OR: 2.06; 95% CI 1.22–3.50; p = 0.0073; EBV = OR: 8.81; 95% CI 1–10; p = 0.0447). The prevalence of HIV/EBV coinfection was lower than that observed in other studies, and social vulnerability and promiscuous sexual behavior were associated risk factors. A long time of HIV-1 infection, without therapy, influenced the risk of coinfection and disease progression. The viral loads of both viruses may be associated with some epidemiological aspects of the population.

Production and activity of matrix metalloproteinases during liver fibrosis progression of chronic hepatitis C patients

BACKGROUND

Matrix metalloproteinases (MMPs) participate in the degradation of extracellular matrix compounds, maintaining the homeostasis between fibrogenesis and fibrolytic processes in the liver. However, there are few studies on the regulation of liver MMPs in fibrosis progression in humans.

AIM

To assess the production activity and regulation of matrix metalloproteinases in liver fibrosis stages in chronic hepatitis C (CHC).

METHODS

A prospective, cross-sectional, multicenter study was conducted. CHC patients were categorized in fibrosis grades through FibroTest^®and/or FibroScan^®. Serum MMP-2, -7, and -9 were determined by western blot and multiplex suspension array assays. Differences were validated by the Kruskal-Wallis and Mann-Whitney U tests. The Spearman correlation coefficient and area under the receiver operating characteristic curve were calculated. Collagenolytic and gelatinase activity was determined through the Azocoll substrate and zymogram test, whereas tissue inhibitor of metalloproteinase-1 production was determined by dot blot assays.

RESULTS

Serum concentrations of the MMPs evaluated were higher in CHC patients than in healthy subjects. MMP-7 distinguished early and advanced stages, with a correlation of 0.32 (P < 0.001), and the area under the receiver operating characteristic displayed moderate sensitivity and specificity for MMP-7 in F4 (area under the receiver operating characteristic, 0.705; 95% confidence interval: 0.605-0.805; P < 0.001). Collagenolytic activity was detected at F0 and F1, whereas gelatinase activity was not detected at any fibrosis stage. Tissue inhibitor of metalloproteinase-1 determination showed upregulation in F0 and F1 but downregulation in F2 (P < 0.001).

CONCLUSION

High concentrations of inactive MMPs were present in the serum of CHC patients, reflecting the impossibility to restrain liver fibrosis progression. MMPs could be good diagnostic candidates and therapeutic targets for improving novel strategies to reverse liver fibrosis in CHC.

Knowing the Blood Nondonor to Activate Behaviour

This work is aimed at further developing the study of blood nondonor behaviour through a joint analysis of sociodemographic characteristics, psychological and physical barriers, impure altruism and anticipated emotions, as predictors of intention to donate. To that end, a step-by-step hierarchical regression analysis was applied on a sample of 2383 Spanish nondonors. The study’s results confirm the influence of traditional variables (sociodemographic characteristics, psychological and physical barriers and impure altruism), as well as the power of anticipated emotions, both positive and negative, of donation action and inaction as variables explaining the intention to donate. Another important contribution has been to develop the moderating role of psychological and physical barriers, in addition to impure altruism, on cause–effect relationships between anticipated emotions and intention to donate. A number of practical implications can be derived from this study for transfusion centres responsible for donation promotion.