Publications by authors named "Cong Khanh Nguyen"

3 Publications

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Development and preliminary evaluation of the interpersonal problem-solving inventory for elementary school students.

Br J Educ Psychol 2021 Jan 11:e12406. Epub 2021 Jan 11.

Hanoi National University of Education, Vietnam.

Background: Several inventories have been developed to assess social problem-solving. However, these instruments originally developed for adult or adolescence and do not capture the full range of main interpersonal relationships over which elementary students resolve daily life interpersonal problems and apply elementary-age typical responses. Therefore, the development of a valid scale to measure interpersonal problem-solving ability in elementary school students is warranted.

Aims: This study aimed to develop and perform a preliminary psychometric evaluation of an interpersonal problem-solving inventory for elementary school students (IPSIE).

Samples And Methods: The IPSIE was administered to elementary student samples that consist of 516 Vietnamese elementary school students in grades 3-5. This study examined the reliabilities of International problem behaviour (IPB) and interpersonal problem-solving inventory (IPSI) as well as the construct validity of IPSI. The construct validity of IPSI was investigated by using exploratory factor analysis (EFA) to explore the emerging factor structure of the data. The confirmatory factor analysis (CFA) was utilized to fit the data.

Results: The reliabilities of IPB and IPSI were assessed by calculating internal consistencies (Cronbach's α = 0.79 vs. 0.90, McDonald's ω = 0.79 vs. 0.82). The EFA results suggested that the IPSI has two-factor structure. The CFA was reexamined to define theory-driven five-factor structure of the IPSI's data. The CFA findings indicated that the scores of IPSI have the five-factor structure as expected with acceptable global fit indices (CFI: 0.943, TLI: 0.939, RMSEA: 0.030, and RMR: 0.046). The concurrent validity of IPSI was tested by calculating correlations between the IPSI and SPSI-R scores (r = .667) and the IPSI and SPSTE-A scores (r = .482).

Conclusions: These finding figures suggest that overall the scales of IPSIE are well-functioning measures with good psychometric properties. Caution and limitations of IPSIE are discussed. Future study and possible applicability are suggested.
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January 2021

The first 100 days of SARS-CoV-2 control in Vietnam.

Clin Infect Dis 2020 Aug 1. Epub 2020 Aug 1.

Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, UK.

Background: One hundred days after SARS-CoV-2 was first reported in Vietnam on January 23rd, 270 cases were confirmed, with no deaths. We describe the control measures used by the Government and their relationship with imported and domestically-acquired case numbers, with the aim of identifying the measures associated with successful SARS-CoV-2 control.

Methods: Clinical and demographic data on the first 270 SARS-CoV-2 infected cases and the timing and nature of Government control measures, including numbers of tests and quarantined individuals, were analysed. Apple and Google mobility data provided proxies for population movement. Serial intervals were calculated from 33 infector-infectee pairs and used to estimate the proportion of pre-symptomatic transmission events and time-varying reproduction numbers.

Results: A national lockdown was implemented between April 1st and 22nd. Around 200 000 people were quarantined and 266 122 RT-PCR tests conducted. Population mobility decreased progressively before lockdown. 60% (163/270) of cases were imported; 43% (89/208) of resolved infections remained asymptomatic for the duration of infection. The serial interval was 3·24 days, and 27·5% (95% confidence interval, 15·7%-40·0%) of transmissions occurred pre-symptomatically. Limited transmission amounted to a maximum reproduction number of 1·15 (95% confidence interval, 0·37-2·36). No community transmission has been detected since April 15th.

Conclusions: Vietnam has controlled SARS-CoV-2 spread through the early introduction of mass communication, meticulous contact-tracing with strict quarantine, and international travel restrictions. The value of these interventions is supported by the high proportion of asymptomatic and imported cases, and evidence for substantial pre-symptomatic transmission.
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August 2020

Severe Acute Respiratory Syndrome Coronavirus 2 Shedding by Travelers, Vietnam, 2020.

Emerg Infect Dis 2020 07 21;26(7):1624-1626. Epub 2020 Jun 21.

We analyzed 2 clusters of 12 patients in Vietnam with severe acute respiratory syndrome coronavirus 2 infection during January-February 2020. Analysis indicated virus transmission from a traveler from China. One asymptomatic patient demonstrated virus shedding, indicating potential virus transmission in the absence of clinical signs and symptoms.
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July 2020