Treatment non-adherence among methadone maintenance patients and associated factors: a multicenter, cross-sectional study in Vietnam.

OBJECTIVE: This multicenter, cross-sectional study was conducted to investigate the prevalence of treatment non-adherence and its associated factors among methadone maintenance patients in Vietnam. METHODS: This secondary data analysis was conducted using the data from a previous study. Six hundred patients were interviewed face-to-face to collect data on their demographic characteristics and social support. Information about the treatment characteristics and patients' non-adherence was gathered from medical records and books monitoring their treatment process. Treatment non-adherence was defined as missing at least one methadone dose in the last three months. RESULTS: The overall prevalence of non-adherence was 45.7%. The average social support score of patients who completely adhered to treatment was significantly higher than that of those who did not (p < 0.001). In the multivariate logistic regression model, for each one-unit increase in social support (one score), treatment time (a year), and patient's monthly income (one million Vietnam dongs), the odds of non-adherence decreased by 28% (aOR = 0.72, 95%CI 0.59-0.88, p = 0.002), 15% (aOR = 0.85, 95%CI 0.80-0.91, p < 0.001) and 9% (aOR = 0.91, 95%CI 0.85-0.97, p = 0.004), respectively. Patients living in Son La (a mountainous province) were 1.72 times (95%CI 1.09-2.71) more likely to be non-adherent as compared to those in other areas (p = 0.020). As per univariate analyses, other associated factors could be age, education level, family monthly income, occupation, and opioid relapse (p < 0.001). CONCLUSIONS: A high non-adherence rate was found among Vietnamese methadone maintenance patients. Interventions involving social support, occupation, income, and education are needed to improve their treatment adherence.

Knowledge and attitudes of medical and pharmacy university students regarding monkeypox: a multicenter, cross-sectional study in Vietnam.

BACKGROUND: In May 2022, monkeypox (mpox) suddenly reappeared and rapidly spread worldwide. This global outbreak was a public health emergency of international concern. This study investigated Vietnamese medical and pharmacy university students' knowledge and attitudes towards mpox. METHODS: This online cross-section survey was administered among students in four universities using a convenience sampling method. A semi-structured questionnaire was shared among students via a Google Forms link (quick-response code) in university amphitheaters at recess. Frequency (percentage) and mean (standard division) were used for descriptive statistics. Univariate and multivariate linear regression analyses were conducted to identify factors associated with students' mpox knowledge and attitudes. A p-value < 0.001 was considered statistical significance. RESULTS: A total of 1,848 students participated in this study (including 1,030 medical students and 818 pharmacy students). Their common sources for seeking mpox/health information included the Internet (89.7%) and mass media (64.2%). Students' average knowledge and attitude scores were 11.542 ± 3.910 (range: 0-23) and 30.301 ± 3.738 (range: 9-45), respectively. The average knowledge score of pharmacy students (12.139 ± 3.545) was significantly higher than that of medical students (11.067 ± 4.118) (p < 0.001). The average attitude score of the former (30.454 ± 3.787) was comparatively higher than that of the latter (30.181 ± 3.696), but this difference was insignificant (p = 0.111). Factors significantly associated with students' mpox knowledge and/or attitudes were their sex, age, year of study, residence, major, grade point average, type of university, seeking mpox information in the past, and using reliable sources to seek health information (p < 0.001). A positive correlation existed between students' knowledge and attitude scores (p < 0.001). CONCLUSIONS: Students' knowledge about mpox was relatively poor, while their attitudes were comparatively positive. Universities and relevant authorities should focus on the above factors and use multiple platforms and channels of communication to guarantee that trustworthy information about mpox can reach as many students as possible.

Health-state utility of patients with HER2-positive breast cancer in Vietnam: A multicenter cross-sectional study.

BACKGROUND: Patients with human epidermal growth factor receptor 2 (HER2)-positive breast cancer may have poor prognoses and short overall and disease-free survival. Most previous studies focused on assessing the quality of life and health-state utility of the general population of breast cancer patients. The number of studies for HER2-positive breast cancer patients is negligible. This study investigated the health-state utility and its associated factors among Vietnamese patients with HER2-positive breast cancer. METHODS: We conducted face-to-face interviews with 301 HER2-positive breast cancer patients to collect data. Their health-state utility was measured via the EQ-5D-5L instrument. The Mann-Whitney U and Kruskal-Wallis tests were employed to compare the differences in utility scores between two groups and among three groups or more, respectively. Factors associated with patients' heath-state utility were identified via Tobit regression models. RESULTS: Pain/discomfort (56.1%) and anxiety/depression (39.5%) were the two issues that patients suffered from the most, especially among metastatic breast cancer patients. The severity of distress (depression, anxiety, and stress) in patients was relatively mild. Of 301 patients, their average utility score was 0.86±0.17 (range: 0.03-1.00), and the average EQ-visual analogue scale (VAS) score was 69.12±12.60 (range: 30-100). These figures were 0.79±0.21 and 65.20±13.20 for 102 metastatic breast cancer patients, significantly lower than those of 199 non-metastatic cancer patients (0.89±0.13 and 71.13±11.78) (p<0.001), respectively. Lower health-state utility scores were significantly associated with older age (p = 0.002), lower education level (p = 0.006), lower monthly income (p = 0.036), metastatic cancer (p = 0.001), lower EQ-VAS score (p<0.001), and more severe level of distress (p<0.001). CONCLUSIONS: Our findings showed a significant decrement in utility scores among metastatic breast cancer patients. Patients' health-state utility differed by their demographic characteristics (age, education level, and income) and clinical characteristics (stage of cancer and distress). Their utility scores may support further cost-effectiveness analysis in Vietnam.

Knowledge, attitudes, and practices toward emergency contraceptive pills among community pharmacists and pharmacy customers: A cross-sectional study in urban Vietnam.

OBJECTIVES: This study aimed to investigate Vietnamese community pharmacists and pharmacy customers' knowledge, attitudes, and practices about emergency contraceptive pills (ECPs). STUDY DESIGN: We recruited 400 pharmacists and 396 customers via a nonprobability convenience sampling technique. We used univariate and multivariate linear regression models to determine factors associated with the knowledge and attitudes toward ECPs among pharmacists and customers. We selected variables in the multivariate models through the Bayesian Model Averaging method using R software (version 4.2.3). RESULTS: In medicine outlets, levonorgestrel and mifepristone (ECPs) were highly available. The average knowledge scores on ECPs among pharmacists and customers were 9.98 ± 2.00 and 6.24 ± 2.33, respectively. Many pharmacists did not have adequate knowledge of ECPs' mechanism of action, dosage, and contraindications. Customers lacked knowledge about their legislation, effectiveness, and side effects. The attitudes toward ECPs among participants were relatively positive. Reliable information sources about ECPs (such as the package leaflet, courses, and books) played an essential role in increasing ECP knowledge and attitudes (p < 0.001). The availability of ECPs (p < 0.001), being educated (p < 0.01 and 0.01), and daily sales (p < 0.001) were significantly associated with pharmacists' knowledge/attitudes. Age, education level, marital status, and occupation were significantly associated with customers' knowledge. Participants' knowledge of was significantly associated with their attitude toward ECPs (p = 0.02 and p < 0.001, respectively). CONCLUSIONS: The knowledge of ECPs among pharmacists was relatively good, while that of customers was poor. There is a need to have policies and interventions to enhance the knowledge and attitudes toward ECPs for both pharmacists and customers. IMPLICATIONS: Community pharmacies are ideal settings to dispense contraceptive methods, especially over-the-counter ECPs. Community pharmacists can help ensure the availability of ECPs in medicine outlets, increase women's access to ECPs, and counsel customers on up-to-date and comprehensive knowledge about these medications, thereby guaranteeing rational ECP use.

Opioid relapse and its predictors among methadone maintenance patients: a multicenter, cross-sectional study in Vietnam.

BACKGROUND: Opioid relapse, one of the common and severe problems during methadone maintenance treatment, can give rise to poor treatment outcomes. This study measured the opioid relapse rate and its associated factors among methadone maintenance patients in Vietnam. METHODS: Information about the demographic characteristics and social support of 655 patients was collected through direct interviews. Medical records were used to gather data on treatment characteristics. Relapse was determined via urine opioid test results. RESULTS: The overall relapse rate of patients during treatment was 13.1%. According to the multivariate logistic regression model, living in mountainous areas (adjusted odds ratio (aOR) = 3.63, 95% CI 1.90-7.46) and long duration of drug use in the past (aOR = 1.06, 95% CI 1.03-1.09) were associated with an increase in the odds of opioid relapse. By contrast, living with many family members (aOR = 0.69, 95% CI 0.55-0.85), having longer treatment time (aOR = 0.80, 95% CI 0.73-0.87), and completely adhering to treatment (aOR = 0.38, 95% CI 0.23-0.64) were protective for opioid relapse. As per the univariate analyses, the odds of opioid relapse declined by 25% for each increase of one close friend or relative (OR = 0.75, 95% CI 0.66-0.86). Regarding social support (range score: 0-100), each additional increase of one score was associated with a 1% decrease in the odds of opioid relapse (OR = 0.99, 95% CI 0.98-0.99). Patient sex, education level, occupation type, patient's monthly income, family's monthly income, the number of previous treatments, daily methadone dose, comorbidity, and received antiretroviral therapy were not associated with opioid relapse among patients (p > 0.05). CONCLUSIONS: Residence, the role of family and social support, and treatment adherence should be paid more attention to guarantee and enhance the success of methadone maintenance treatment.

Knowledge and attitudes of community pharmacists regarding dementia: A nationwide cross-sectional study in Vietnam.

OBJECTIVE: To investigate Vietnamese community pharmacists' knowledge and attitudes towards dementia. METHODS: 1066 community pharmacists in eight provinces/centrally-governed cities were recruited using a non-probability convenience sampling technique. Their dementia knowledge was measured using a set of 14 questions developed through a literature review. The Approaches to Dementia Questionnaire was used to assess pharmacists' attitudes towards dementia. Cronbach's alpha was 0.88 for the overall questionnaire (0.70 for the knowledge part and 0.81 for the attitude part). RESULTS: Participants were mostly female (74.2%), 20-39 years old (79.1%), and had work experience in pharmacies of less than 10 years (77.0%). Medicines for dementia were available in only 40 community pharmacies (3.8%), including galantamine (3.0%) and donepezil (0.8%). Pharmacists' average knowledge and attitude scores were 8.03 ± 2.61 and 64.81 ± 7.34, respectively. There were considerable differences in pharmacists' knowledge and attitudes between rural and urban areas and among eight provinces (p < 0.001). Higher knowledge and attitude scores were found among those with higher education levels and longer work experience (p < 0.001). Using reliable sources to seek information on dementia, such as books and scientific articles, also helped pharmacists to have better knowledge and more positive attitudes (p < 0.001). There was a positive relationship between knowledge and attitude scores (r = 0.326, p < 0.001). CONCLUSION: Community pharmacists demonstrated moderate levels of knowledge and attitudes towards dementia. Their knowledge about the symptoms of dementia was inadequate. Educational interventions and training programs are urgently needed to enhance their dementia knowledge and attitudes.

An instrument for measuring job satisfaction (VIJS): A validation study for community pharmacists in the context of the COVID-19 pandemic in Vietnam.

BACKGROUND: Job satisfaction is one of the main factors creating and bringing about work motivation, productivity, and efficiency as well as decreasing job-hopping and job turnover. No previous studies have been conducted to assess job satisfaction for community pharmacists in Vietnam. OBJECTIVE: This research was conducted to develop and validate an instrument used to measure community pharmacists' job satisfaction in the context of the COVID-19 pandemic in Vietnam. METHODS AND RESULTS: A total of 351 pharmacists participated in this survey. Data were analyzed using R software version 4.2.0. The final instrument (VIJS) has 34 items divided into six factors which were determined via a parallel analysis (including physical working conditions, work nature, income and other benefits, management policies and managers, relationships with coworkers and customers, and learning and advancement opportunities). VIJS's internal consistency was excellent (Cronbach's alpha = 0.97, Omega total = 0.98, split-half reliability = 0.985, and composite reliability>0.8). Two-week test-retest reliability results (intraclass correlation coefficient for the overall instrument: 0.97, for six factors: 0.865-0.938) demonstrated the consistency of the VIJS when the same test was repeated on the same sample (62 pharmacists) at different points in time. The Confirmatory Factor Analysis was employed to assess the construct validity. The VIJS was a good fit to a six-factor model (Chisq/df = 2.352, Comparative Fit Index = 0.937, Tucker-Lewis Index = 0.929, Standardized Root Mean Square Residual = 0.042, and Root Mean Square Error of Approximation = 0.062). VIJS's good convergent and discriminant validity was demonstrated via Average Variance Extrated>0.5 and the Heterotrait-Monotrait ratio of correlations<0.85. CONCLUSIONS: The VIJS possesses good reliability and validity and can be used to measure community pharmacists' job satisfaction.

Knowledge, attitudes, and practices of university students regarding COVID-19: a cross-sectional study in Vietnam.

OBJECTIVE: This cross-sectional study investigated the knowledge, attitudes, and practices (KAP) of Vietnamese university students regarding COVID-19. METHODS: A validated questionnaire (Cronbach's alpha = 0.71) was used to survey 1,025 students. A convenience sampling method was used for recruiting students from April to May 2022. The Wilcoxon rank-sum test and the Kruskal-Wallis rank-sum test/Dunn test for multiple comparisons were employed to compare students' KAP scores between two groups and among three groups or more, respectively. Factors associated with students' COVID-19 KAP scores were determined via univariate and multivariate linear regression models. Variables in the multivariate linear regression models were chosen using the Bayesian Model Averaging method in R software version 4.2.0. RESULTS: A majority of students had good knowledge (75.61%), positive attitudes (98.24%), and good practices toward COVID-19 (94.93%). Regarding the COVID-19 knowledge, the proportions of students who knew that mosquito bites and exposure to/eating wild animals would not lead to COVID-19 infection were not high (47.22 and 34.34%, respectively). More importantly, 70.34% of students thought that vitamins and minerals could help prevent or cure COVID-19. Antibiotics were the first choice for COVID-19 treatment of 438 students (42.73%). Nearly half of students (48.0%) bought antibiotics to keep at home in case of COVID-19 infection. The average KAP scores of medical students (19.97 ± 3.99, 45.10 ± 3.94, 9.72 ± 1.78) and females (18.67 ± 4.44, 44.79 ± 3.79, 9.36 ± 1.84) were significantly higher than those of non-medical students (16.48 ± 4.37, 43.33 ± 4.03, 8.68 ± 1.87) and males (17.01 ± 4.55, 42.79 ± 4.39, 8.77 ± 1.97), respectively (p < 0.001). Older students were more likely to have good knowledge and practices than the younger ones (p < 0.001). In addition, students using websites of the World Health Organization/the Ministry of Health and scientific articles to seek COVID-19 information were significantly associated with higher KAP scores when compared with those not using these sources (p < 0.001, p < 0.001, and p = 0.00139, respectively). CONCLUSION: Students' KAP scores significantly varied by age, sex, major, and sources of COVID-19 information. Although many students had sufficient knowledge, positive attitudes, and good preventive practices toward COVID-19, additional education and training strategies are paramount, especially for non-medical students and males.

Prevalence and associated factors of overweight and obesity among primary school children: a cross-sectional study in Thanhhoa City, Vietnam.

OBJECTIVE: To determine the prevalence and associated factors of overweight and obesity among primary school children (6-11 years old) in Thanhhoa city in 2021. DESIGN: Cross-sectional study. SETTING: Seven primary schools in Thanhhoa city, Vietnam. PARTICIPANTS: 782 children (and their parents). PRIMARY AND SECONDARY OUTCOME MEASURES: Two-stage cluster random sampling was used for selecting children and data were collected from January to February 2021. A self-administrated questionnaire was designed for children and their parents. Children's height and weight were measured and body mass index (BMI)-for-age z-scores were computed using the WHO Anthro software V.1.0.4. Data were analysed using R software V.4.1.2. The associations between potential factors and childhood overweight/obesity were analysed through univariate and multivariate logistic regression analyses. Variables were selected using the Bayesian Model Averaging method. RESULTS: The prevalence of overweight/obesity among primary school children in Thanhhoa city was 35.93% (overweight 21.61% and obesity 14.32%). The proportion of overweight girls was nearly equal to that of boys (20.78% and 22.52%, respectively, p=0.6152) while the proportion of boys with obesity was four times as many as that of girls (23.86% and 5.62%, respectively, p<0.0001). Child's sex was the factor significantly associated with childhood overweight/obesity. Boys had double the risk of being overweight/obese than girls (adjusted OR: aOR=2.48, p<0.0001). Other potential factors which may be associated with childhood overweight/obesity included mode of transport to school, the people living with the child, mother's occupation, father's education, eating confectionery, the total time of doing sports, and sedentary activities. CONCLUSION: One in every three primary school children in Thanhhoa city were either overweight or obese. Parents, teachers and policy-makers can implement interventions in the aforementioned factors to reduce the rate of childhood obesity. In forthcoming years, longitudinal studies should be conducted to determine the causal relationships between potential factors and childhood overweight/obesity.

Availability, prices and affordability of essential medicines: A cross-sectional survey in Hanam province, Vietnam.

OBJECTIVE: To measure medicines' prices, availability, and affordability in Hanam, Vietnam. METHODS: The standardized methodology developed by the World Health Organization (WHO) and Health Action International was used to survey 30 essential medicines (EMs) in 30 public health facilities and 35 private medicine outlets in 2020. The availability of medicine was computed as the percentage of health facilities in which this medicine was found on the data-collection day. International reference prices (IRPs) from Management Sciences for Health (2015) were used to compute Median Price Ratio (MPR). The affordability of treatments for common diseases was computed as the number of days' wages of the lowest-paid unskilled government worker needed to purchase medicines prescribed at a standard dose. Statistic analysis was done using R software version 4.1.1. RESULTS: The mean availability of originator brands (OBs) and lowest-priced generics (LPGs) was 0.7%, 63.2% in the public sector, and 13.7%, 47.9% in the private sector, respectively. In private medicine outlets, the mean availability of both OBs and LPGs in urban areas was significantly higher than that in rural areas (p = 0.0013 and 0.0306, respectively). In the public sector, LPGs' prices were nearly equal to their IRPs (median MPRs = 0.95). In the private medicine outlets, OBs were generally sold at 6.24 times their IRPs while this figure for LPGs was 1.65. The affordability of LPGs in both sectors was good for all conditions, with standard treatments costing a day's wage or less. CONCLUSION: In both sectors, generic medicines were the predominant product type available. The availability of EMs was fairly high but still lower than WHO's benchmark. A national-scale study should be conducted to provide a comprehensive picture of the availability, prices, and affordability of EMs, thereby helping the government to identify the urgent priorities and improving access to EMs in Vietnam.

Access to essential medicines for children: a cross-sectional survey measuring medicine prices, availability and affordability in Hanam province, Vietnam.

OBJECTIVE: To identify the availability, prices and affordability of essential medicines for children (cEMs) in Hanam province, Vietnam. DESIGN: Cross-sectional study. SETTING: One city and five districts of Hanam province. PARTICIPANTS: 66 public health facilities and 66 private drugstores. PRIMARY AND SECONDARY OUTCOME MEASURES: The standardised methodology of the WHO and Health Action International was used to investigate 30 paediatric essential medicines. For each medicine, data were collected for two products: the lowest-priced medicine (LPM) and the highest-priced medicine (HPM). The availability of medicine was computed as the percentage of facilities in which this medicine was found on the day of data collection. Median prices of individual medicines were reported in local currency. Affordability was calculated as the number of days' wages required for the lowest-paid unskilled government worker to purchase standard treatments for common diseases. Data were analysed using R software V.4.1.0. RESULTS: The mean availability of LPMs in the private sector (33.2%, SD=38.0%) was higher than that in the public sector (24.9%, SD=39.4%) (p<0.05). The mean availability of HPMs was extremely low in both sectors (11.3% and 5.8%, respectively). The mean availability of cEMs in urban areas was significantly higher than that in rural areas (36.5% and 31.6%, respectively, p<0.05). In the public sector, the prices of LPMs were nearly equal to the international reference prices (IRPs). In the private sector, LPMs were generally sold at 4.06 times their IRPs. However, in both sectors, the affordability of LPMs was reasonable for most conditions as standard treatments only cost a day's wage or less. CONCLUSION: The low availability was the main reason hindering access to cEMs in Hanam, especially in the countryside. A national study on cEMs should be conducted, and some practical policies should be promulgated to enhance access to cEMs.

Knowledge, attitude and practices of community pharmacists regarding COVID-19: A paper-based survey in Vietnam.

OBJECTIVE: To survey the knowledge, attitude, and practices of Vietnamese pharmacists regarding the COVID-19 pandemic. METHOD: This cross-sectional, paper-based study was conducted from June to August 2020. A validated questionnaire (Cronbach's alpha = 0.84) was used to interview 1,023 pharmacists in nine provinces of Vietnam. Analysis of covariance was employed to identify factors associated with the knowledge of pharmacists. The best model was chosen by using the Bayesian Model Averaging method in R software version 4.0.4. RESULTS: The mean knowledge score was 12.02 ± 1.64 (range: 6-15), which indicated that 93.4% of pharmacists had good knowledge of COVID-19. There was no difference in the average score between males and females (p > 0.05). The multivariate linear regression model revealed that the knowledge was significantly associated with pharmacists' age, education level, and residence (p < 0.001). About attitude and practices, pharmacists daily sought and updated information on the COVID-19 pandemic through mass media and the internet (social network and online newspapers). Nearly 48% of them conceded that they communicated with customers when at least one person did not wear a face mask at the time of the COVID-19 outbreak. At medicine outlets, many measures were applied to protect pharmacists and customers, such as equipping pharmacists with face masks and hand sanitizers (95.0%), using glass shields (83.0%), and maintaining at least one-meter distance between two people (85.2%). CONCLUSION: The pharmacists' knowledge of COVID-19 transmission, symptoms, and prevention was good. Many useful measures against the spread of this perilous virus were applied in medicine outlets. However, pharmacists should restrict forgetting to wear face masks in communication with medicine purchasers. The government and health agencies should have practical remedies to reduce the significant differences in the COVID-19 knowledge of pharmacists among provinces and education-level groups.