Psychological and behavioural impacts of the 2008 China earthquake on blood donors

A Systematic Review and Meta-Analysis of the Prevalence of Post-Traumatic Stress Disorder among Homeless People

Post-traumatic stress disorder (PTSD) is common among homeless people and is associated with an increased risk of mortality from suicide, medical causes, and drug-related problems. However, there are no previous systematic review and meta-analysis studies that reported the consolidated magnitude of PTSD among homeless people. A literature search was conducted on PubMed, Embase, and Scopus to discover pertinent studies that determined the prevalence of PTSD among the homeless. Articles were evaluated by titles, abstracts, and full-text. Comprehensive meta-analysis software was used to conduct the meta-analysis. Subgroup and sensitivity analysis were performed and Cochran's Q- and the I² test were used to assess heterogeneity. The evidence of publication bias was evaluated by using Egger's test and visual inspection of the symmetry in funnel plots. From the total, 19 studies with 20,364 participants across seven countries were included in the final analysis. Our meta-analysis revealed that the pooled prevalence of PTSD among homeless people was 27.38% (95% CI; 21.95-33.57). In our subgroup analysis, we found that the prevalence of PTSD was considerably high as measured by the screening instrument (35.93%) than the diagnostic instrument (23.57% %). The prevalence of PTSD among homeless showed a significant variation by the location of the studies, the instruments used to measure PTSD as well as the quality of the included studies. This review showed that the pooled prevalence estimate of PTSD among homeless peoples was remarkably high (27.38%). Early screening and treatment of PTSD among homeless peoples are warranted to alleviate suffering.

The Prevalence of Post-Traumatic Stress Disorder among People Living with HIV/AIDS: a Systematic Review and Meta-Analysis

Numerous studies have reported that the prevalence estimates of post-traumatic stress disorder (PTSD) might be substantially high among people with HIV/AIDS (PLWHA) when compared to the general population. However, there are no previous systematic reviews and meta-analysis studies that reported the pooled prevalence of PTSD among PLWHA. To fill this gap in research, this study aims to analyze data from observational studies concerning the prevalence of PTSD among PLWHA and formulate a recommendation for future research and clinical practice. Three electronic databases (PubMed, EMBASE, and SCOPUS) were searched to identify relevant studies that reported the prevalence of PTSD among PLWHA. A comprehensive meta-analysis software was used to conduct the meta-analysis. Subgroup and sensitivity analysis was conducted the I² test was utilized to evaluate heterogeneity. Publication bias was assessed by using Egger's test and visual inspection of the symmetry in funnel plots. Nineteen-studies with 9094 participants were included in this systematic review and meta-analysis. The pooled prevalence estimate of PTSD among PLWHA was found to be 32.67% (95% CI; 25.29-41.01). The prevalence of PTSD was 25.17% (95% CI; 19.72-31.55) for studies that used diagnostic instrument to assess PTSD and it was 34.68% (95% CI; 25.42-45.26) for studies that used screening instruments. Furthermore, the prevalence of PTSD among PLWHA was comparable between high-income (31.19%) and low, and middle-income countries (34.87%). We also found that the pooled prevalence of PTSD was remarkably higher for moderate and low-quality studies (42.64%) than for high-quality studies (24.84%). The prevalence of PTSD among PLWHA in the current study showed a significant variation by the location of the studies, the instruments used to measure PTSD as well as the quality of the included studies. The present review demonstrated that the prevalence estimates of PTSD among PLWHA (32.67%) was notably high and requires clinical attention. The estimated prevalence of PTSD was found to be comparable between high income and low, and middle-income countries. In addition, we found that the prevalence of PTSD was notably lower when measured by the diagnostic instrument than the screening instrument, although the variation was not statistically significant. Early screening and treatment of PTSD among PLWHA is needed to alleviate suffering.

Systematic Review on Post-Traumatic Stress Disorder Among Survivors of the Wenchuan Earthquake

Post-traumatic stress disorder (PTSD) widely occurs among victims or witness of disasters. With flashbacks, hyperarousal, and avoidance being the typical symptoms, PTSD became a focus of psychological research. The earthquake in Wenchuan, China, on May 12, 2008, was without precedent in magnitude and aftermath and caused huge damage, which drew scientists' attention to mental health of the survivors. We conducted a systematic overview by collecting published articles from the PubMed database and classifying them into five points: epidemiology, neuropathology, biochemistry, genetics and epigenetics, and treatment. The large body of research during the past 6 years showed that adolescents and adults were among the most studied populations with high prevalence rates for PTSD. Genomic and transcriptomic studies focusing on gene × environment studies as well as epigenetics are still rare, although a few available data showed great potential to better understand the pathophysiology of PTSD as multifactorial disease. Phytotherapy with Chinese herbs and acupuncture are rarely reported as of yet, although the first published data indicated promising therapy effects. Future studies should focus on the following points: (1) The affected populations under observation should be better defined concerning individual risk factor, time of observation, spatial movement, and individual disease courses of patients. (2) The role of social support for prevalence rates of PTSD should be observed in more detail. (3) Efficacy and safety of Chinese medicine should be studied to find potential interventions and effective treatments of PTSD.

Impact of the May 12, 2008, Earthquake on blood donations across five Chinese blood centers

BACKGROUND

On May 12, 2008, a severe earthquake struck China's Sichuan Province. The nationwide outpouring of charity resulted in a surge of subsequent blood donations. The quantity and quality of these donations were examined in comparison with routine donations.

STUDY DESIGN AND METHODS

Whole blood and apheresis donations from five geographically different blood centers collected within 1 week postearthquake were compared with those collected during the rest of the year. Regional differences, demographic characteristics, first-time and repeat donor status, and infectious disease screening markers associated with these donations were compared by earthquake status using chi-square statistics. Poisson regression analysis examined the number of daily donations by earthquake status after adjusting for center, day of week, and seasonal variations.

RESULTS

The number of daily donations across five blood centers increased from 685 on a typical day to 1151 in the postearthquake week. The surge was observed in both sexes and across different education levels, age, and ethnicity groups and three blood centers and was significant after adjusting for confounding covariates. The influx of first-time donors (89.5%) was higher than that of repeat donors (34%). There was a significant change in the overall screening reactive marker rates excluding alanine aminotransferase (2.06% vs. 1.72%% vs. 4.96%). However, when the individual screening test was analyzed separately, no significant differences were found.

CONCLUSION

Timely donations in response to a disaster are crucial to ensure emergency blood transfusion. The dramatically increased postearthquake donations suggest that Chinese blood centers are capable of handling emergency blood needs. Measures to maintain blood safety should be taken in times of emergency.