ORCID Profile
0000-0001-9984-8156
Current Organisation
The University of Hong Kong
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Publisher: SAGE Publications
Date: 07-2005
DOI: 10.1177/102490790501200304
Abstract: To describe, using the Utstein template, the characteristics of patients presenting with out-of-hospital cardiac arrest to a university teaching hospital in the New Territories of Hong Kong, and to evaluate survival. Prospective study. The emergency department of a teaching hospital in the New Territories, Hong Kong. Patients older than 12 years with non-traumatic out-of-hospital cardiac arrest who were transported to the hospital between 1 July 2002 and 31 December 2002. Demographic data, characteristics of cardiac arrest and response time intervals of the emergency medical service presented according to the Utstein style, and also survival to hospital discharge rate. A total of 124 patients were included (49.2% male mean age 71.9 years). The majority of cardiac arrests occurred in patients' home. The overall bystander cardiopulmonary resuscitation (CPR) rate was 15.3% (19/124). The most common electrocardiographic rhythm at scene was asystole, whilst pulseless ventricular tachycardia (VT)/ventricular fibrillation (VF) was found in 18.0%. The overall survival was 0.8% (1/124), and survival to hospital discharge was significantly higher for patients with VF or pulseless VT than those patients with other rhythms of cardiac arrest (11.1% versus 0%). The median witnessed/recognised collapse to defibrillation time was 14 minutes. The median prehospital time interval from collapse/recognition to arrival at hospital was 33 minutes. The prognosis of out-of-hospital cardiac arrest in Hong Kong was poor. Major improvements in every component of the chain of survival are necessary.
Publisher: JMIR Publications Inc.
Date: 29-11-2021
Abstract: ngaging students in interprofessional education for higher order thinking and collaborative problem-solving skills is challenging. This study reports the development of Virtual ER, a serious game played on a virtual platform, and how it can be an innovative way for delivering interprofessional education to medical and nursing undergraduates. e report the development of a serious online game, Virtual ER, and evaluate its effect on teamwork enhancement and clinical competence. We also explore if Virtual ER can be an effective pedagogical tool to engage medical and nursing students with different learning styles. irtual ER is a custom-made, learning outcome–driven, case-based web app. We developed a game performance scoring system with specific mechanisms to enhance serious gaming elements. Sixty-two students were recruited from our medical and nursing programs. They played the games in teams of 4 or 5, followed by an instructor-led debriefing for concept consolidation. Teamwork attitudes, as measured by the Human Factors Attitude Survey, were compared before and after the game. Learning style was measured with a modified Honey and Mumford learning style questionnaire. tudents were satisfied with Virtual ER (mean satisfaction score 5.44, SD 0.95, of a possible 7). Overall, Virtual ER enhanced teamwork attitude by 3.02 points (95% CI 1.15-4.88, i P /i =.002). Students with higher scores as activists (estimate 9.09, 95% CI 5.17-13.02, i P /i & .001) and pragmatists (estimate 5.69, 95% CI 1.18-10.20, i P /i =.01) had a significantly higher degree of teamwork attitude enhancement, while students with higher scores as theorists and reflectors did not demonstrate significant changes. However, there was no difference in game performance scores between students with different learning styles. here was considerable teamwork enhancement after playing Virtual ER for interprofessional education, in particular for students who had activist or pragmatist learning styles. Serious online games have potential in interprofessional education for the development of 21st century life skills. Our findings also suggest that Virtual ER for interprofessional education delivery could be expanded locally and globally.
Publisher: JMIR Publications Inc.
Date: 14-07-2022
DOI: 10.2196/35269
Abstract: Engaging students in interprofessional education for higher order thinking and collaborative problem-solving skills is challenging. This study reports the development of Virtual ER, a serious game played on a virtual platform, and how it can be an innovative way for delivering interprofessional education to medical and nursing undergraduates. We report the development of a serious online game, Virtual ER, and evaluate its effect on teamwork enhancement and clinical competence. We also explore if Virtual ER can be an effective pedagogical tool to engage medical and nursing students with different learning styles. Virtual ER is a custom-made, learning outcome–driven, case-based web app. We developed a game performance scoring system with specific mechanisms to enhance serious gaming elements. Sixty-two students were recruited from our medical and nursing programs. They played the games in teams of 4 or 5, followed by an instructor-led debriefing for concept consolidation. Teamwork attitudes, as measured by the Human Factors Attitude Survey, were compared before and after the game. Learning style was measured with a modified Honey and Mumford learning style questionnaire. Students were satisfied with Virtual ER (mean satisfaction score 5.44, SD 0.95, of a possible 7). Overall, Virtual ER enhanced teamwork attitude by 3.02 points (95% CI 1.15-4.88, P=.002). Students with higher scores as activists (estimate 9.09, 95% CI 5.17-13.02, P .001) and pragmatists (estimate 5.69, 95% CI 1.18-10.20, P=.01) had a significantly higher degree of teamwork attitude enhancement, while students with higher scores as theorists and reflectors did not demonstrate significant changes. However, there was no difference in game performance scores between students with different learning styles. There was considerable teamwork enhancement after playing Virtual ER for interprofessional education, in particular for students who had activist or pragmatist learning styles. Serious online games have potential in interprofessional education for the development of 21st century life skills. Our findings also suggest that Virtual ER for interprofessional education delivery could be expanded locally and globally.
Publisher: Cold Spring Harbor Laboratory
Date: 16-03-2022
DOI: 10.1101/2022.03.15.22272307
Abstract: Survey questions on usual quantity and frequency of alcohol consumption are regularly used in screening tools to identify drinkers requiring intervention. The aim of this study is to examine age-based differences in quantity and frequency of alcohol consumption on the Alcohol Use Disorders Identification Test (AUDIT) and how this relates to the prediction of harmful or dependent drinking Cross sectional survey Australia. Data was taken from 17,399 respondents who reported any alcohol consumption in the last year and were aged 18 and over from the 2016 National Drug Strategy Household Survey, a broadly representative cross-sectional survey on substance use. Respondents were asked about their frequency of consumption, usual quantity per occasion and the other items of the AUDIT. In older drinkers, quantity per occasion (β=0.53 (0.43, 0.64 95%CI in 43-47 year olds as an ex le) is a stronger predictor of dependence than frequency per occasion (β=0.24 (0.17, 0.31). In younger drinkers the reverse was true with frequency a stronger predictor (β=0.54 (0.39, 0.69) in 23-27 year olds) than quantity (β=0.26 (0.18, 0.34) in 23-27 year olds). Frequency of consumption was not a significant predictor of dependence in respondents aged 73 and over (β=-0.03 (−0.08, 0.02)). Similar patterns were found when predicting harmful drinking. Despite this, since frequency of consumption increased steadily with age, the question on frequency was responsible for at least 65% of AUDIT scores in drinkers aged 53 and over. The items with a weaker association with dependent or harmful drinking in younger and older drinkers are the same items with the strongest influence on overall AUDIT scores. Further investigation into age-specific scoring of screening tools is recommended.
Publisher: JMIR Publications Inc.
Date: 09-08-2022
Abstract: ealthcare avoidance in the COVID-19 Pandemic has been widely reported. Yet few studies have investigated the dynamics of hospital avoidance behaviour during pandemic waves and inferred its impact on excess non-COVID-19 death toll. o measure the impact of hospital avoidance behaviour on excess mortality using emergency department (ED) patient data from 2016 to 2021, during which Hong Kong experienced a unique COVID-19 pandemic with four distinct waves of case number surges. ur data is taken from the CDARS Hong Kong Hospital Authority administrative database, which oversees all local public hospitals and plays a prominent role in emergency care provision. To estimate excess mortality, two-stage least squares was utilised with daily tallies of ED visit and 28-day mortality. Elderly records were categorised by the residential care home for elderly status (RCHE) and comorbidities were used to explain the demographic and clinical attributes of excess 28-day mortality. ompared with the average in 2016-2019 average there was a reduction in total ED visits in 2020 of 25·4%. During the same period, the 28-day mortality of non-COVID-19 ED deaths increased by 7·82% compared with 2016-2019. The estimated total elderly excess non-COVID 28-day death by reduced ED visits throughout 2020 to 2021 is 1,958 (1,100-2,820, no time lag). The actual excess death in 2020 and 2021 are 3,143 and 4,013 respectively, with 2016-2019 average as the benchmark. Death on Arrival (DOA)/ Death before Arrival (DBA) increased by 35·1% in 2020, while non-DOA/DBA mortalities increased only by a moderate 4·65%. In both DOA/DBA and non-DOA/DBA, the increases were higher during wave periods than in non-wave periods. Moreover, non-RCHE patients saw a greater reduction in ED visit than RCHE residents across all waves by more than 10%. Most of the subset comorbidities demonstrated an annualised reduction in visit in 2020. Renal diseases and severe liver diseases saw a notable death increase. e demonstrated a statistical method to estimate hospital avoidance behaviour during a pandemic, and quantified the consequential excess 28-day mortality, with a focus on elderlies, who had high frequencies of ED visit and deaths. This study serves as an informed alert and possible investigation guideline to healthcare professionals about hospital avoidance behaviour and its consequences.
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Abraham Ka-chung Wai.