Kosin Medical Journal

Original article

How does quiz activity affect summative assessment outcomes? An analysis of three consecutive years’ data on self-directed learning: Chi Eun Oh, Hyunyong Hwang; Kosin Med J. 2022;37(3):228-235. Published online September 27, 2022; DOI: https://doi.org/10.7180/kmj.22.118

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Background
We investigated how quiz activities can improve summative assessment outcomes by analyzing the relationship between them.
Methods
We used 217 first-year medical students’ medical informatics data from 3 consecutive years. We analyzed summative assessment outcomes between quiz completion and incompletion groups, one-time and multiple-time quiz learning groups, and three combined comparisons between subgroups of quiz learning activity frequencies: 1 versus 2, 3, 4, and 6 (group 1), 1 and 2 versus 3, 4, and 6 (group 2), and 1, 2, and 3 versus 4 and 6 (group 3). We then analyzed correlations between the final quiz scores and summative assessment outcomes.
Results
The summative assessment means for students who completed quizzes and those who did not were 87.16±8.73 and 83.22±8.31, respectively (p=0.001). The means for the one-time and multiple-time quiz learning groups were 86.54±8.94 and 88.71±8.10, respectively (p=0.223). The means for combined subgroups were not significantly different between groups (p>0.05), although a statistically significant increasing trend was found from groups 1 to 3 (0.223>0.203>0.075 using the t-test and 0.225>0.150>0.067 using the Mann-Whitney test, respectively). Summative assessment scores were not significantly correlated with quiz scores (r=0.115, p=0.213).
Conclusions
Quizzes helped students who used self-directed learning obtain better summative assessment outcomes. Formative quizzes presumably did not provide students with direct knowledge, but showed them their weak points and motivated them to work on areas where their knowledge was insufficient.

Citations

Citations to this article as recorded by

Do we need Moodle in medical education? A review of its impact and utility
Seri Jeong, Hyunyong Hwang
Kosin Medical Journal.2023; 38(3): 159. CrossRef
The effectiveness of Moodle's “Lesson” feature in pre-learning about arterial puncture and blood transfusion procedures
Haeyoung Lee, Sang-Shin Lee, Hyunyong Hwang
Kosin Medical Journal.2023; 38(4): 278. CrossRef

Review article

Sleep and vaccine administration time as factors influencing vaccine immunogenicity: Eun Seok Kim, Chi Eun Oh; Kosin Med J. 2022;37(1):27-36. Published online March 29, 2022; DOI: https://doi.org/10.7180/kmj.22.014

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Abstract PDF PubReader ePub: The immunogenicity of vaccines is affected by host, external, environmental, and vaccine factors; in addition, sleep or circadian rhythms may also have effects. With the use of vaccines to mitigate the coronavirus disease 2019 (COVID-19) pandemic, research is underway to clarify what time of the day is optimal for COVID-19 vaccination and how disturbances of circadian rhythms will affect the immunogenicity of the vaccine in shift workers. Studies on the relationship between sleep time and the immunogenicity of vaccines for influenza and hepatitis have demonstrated that less sleep time and sleep deprivation tended to adversely affect immunogenicity. In some studies, there were even sex differences in these effects. When comparing shift workers with disturbances in their circadian rhythms and those who only worked during the day, one study found less antibody formation in shift workers; however, further studies on the relationship between shift work and the immunogenicity of vaccines are needed. Studies on the relationship between vaccine administration time and immunogenicity have shown different results according to age and sex. Therefore, future studies on vaccine administration time and immunogenicity may require an individualized approach for each vaccine and each population to be vaccinated. There is accumulating evidence on the effects of sleep and vaccine administration time on the immunogenicity of vaccines. However, further studies are needed to determine whether the association between immunogenicity and circadian rhythms and vaccine administration time can be used as a basis to increase the immunogenicity for individual vaccines.

Original articles

Empirical antibiotics for recurrent urinary tract infections in children: Hyun Gil Choi, Ji Young Lee, Chi Eun Oh; Kosin Med J. 2018;33(2):159-170. Published online December 31, 2018; DOI: https://doi.org/10.7180/kmj.2018.33.2.159

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Abstract PDF PubReader ePub: Objectives
The purpose of this study was to compare antibiotic resistance patterns between first urinary tract infection (UTI) and recurrent UTI groups and to obtain information regarding empirical antibiotic selection for treating recurrent UTI.
Methods
We retrospectively reviewed 148 children treated for UTIs from January 2009 to June 2016. The patients were divided into two groups: first UTI (N = 148) and recurrent UTI (17 patients and 20 episodes).
Results
In both groups, Escherichia coli was the most frequent causative organism, accounting for 89.9% and 75.0% in the first and recurrent UTI groups, respectively. When E. coli or Klebsiella pneumoniae was the causative organism, extended-spectrum β-lactamase (ESBL)-producing organisms were more frequent in the recurrent UTI group (17.6%) than in the first UTI group (14.0%); however, this difference was not statistically significant (P = 0.684). Cefotaxime was the most frequently used first-line empirical antibiotic in both groups. In the first UTI and recurrent UTI groups, 7.4% and 15.0% of patients were treated with intravenous antibiotics as definitive therapy, respectively (P = 0.250). Fifteen out of 17 patients having a second UTI had different causative organisms or antibiotic susceptibility patterns compared to their previous episode.
Conclusions
Escherichia coli was the most frequent causative organism in the recurrent UTI group. There were no differences in the proportion of ESBL-producing organisms between the first UTI and recurrent UTI groups. Therefore, when a UTI recurs in children, the antibiotics effective on the most common causative organism might be administered as empirical antibiotics.

Comparative Study of Nosocomial and Community-Acquired Rotaviral Gastroenteritis: Jae Sung Yu, Hyun Ju Jin, Ho Seok Kang, Chi Eun Oh; Kosin Med J. 2010;25(2):6-13. Published online December 31, 2010

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Case report

A Case of Congenital Subglottic Hemangioma In An Infant: Chi Eun Oh, Eun Seok Noh, Jae Sun Park, Kang Dae Lee, Young Ok Kim, Mi Hee Jung; Kosin Med J. 2005;20(1):1-5.

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