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Fulltext A systematic review on validity evidence of Medical Student Stressor Questionnaire

Yusoff MSB

Education in Medicine Journal, 2017;9(1):1-16.
MyJurnal

Introduction: Detecting sources of stress of medical students is important for planning wellness
program to improve their psychological wellbeing. One of instruments to detect the sources of stress
is the Medical Student Stressor Questionnaire (MSSQ). A systematic review was performed to find
out evidence to support its validity in term of content, response process, internal structure, relation
to other variables, and consequences. Method: The author planned, conducted and reported this
study according to PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses)
standard of quality for reporting meta-analyses. Systematic search was performed on EBSCOhost,
Scopus, Proquest, PubMed, Web of Science and Google Scholar databases. Result: The author
yielded 613 relevant articles based on search terms, 44 articles had used MSSQ, and after critical
appraisal, only 18 articles provided evidence to support validity MSSQ and thus were included in
the systematic review. Conclusion: This systematic review supports the validity of MSSQ in relation
to content, response process, internal structure, relations to other variables, and consequences of
its scores. MSSQ is a valid tool to detect sources of stress in medical students and its results can be
utilised as a guide to plan wellness program or intervention to improve medical students’ wellbeing.

Matched MeSH terms: Validation Studies as Topic
Translation and validation of body image instruments: Challenges, good practice guidelines, and reporting recommendations for test adaptation

Swami V, Barron D

Body Image, 2019 Dec;31:204-220.
PMID: 30220631 DOI: 10.1016/j.bodyim.2018.08.014

Body image research has grown rapidly to include new cultural and linguistic populations, but this gives rise to a need for measurement instruments that are sensitive to local contextual variations while remaining equivalent across groups. Test adaptation, or the translation and validation of a source instrument for use in a new cultural group, is an important part of this process. Here, we offer an operational framework for conducting effective test adaptation. We cover good-practice guidelines for instrument translation and suggest effective strategies for achieving semantic equivalence of translated instruments. We also focus on measurement invariance and provide good-practice and reporting guidelines for conducting exploratory and confirmatory factor analyses. Finally, we suggest good-practice guidelines for demonstrating that scores on translated measures have good reliability and validity. It is our hope that the availability of this article will assist body image scholars seeking to conduct robust test adaptations of existing measurement tools.

Matched MeSH terms: Validation Studies as Topic*
Fulltext Heart Rate Measures From Wrist-Worn Activity Trackers in a Laboratory and Free-Living Setting: Validation Study

Müller AM, Wang NX, Yao J, Tan CS, Low ICC, Lim N, et al.

JMIR Mhealth Uhealth, 2019 10 02;7(10):e14120.
PMID: 31579026 DOI: 10.2196/14120

BACKGROUND: Wrist-worn activity trackers are popular, and an increasing number of these devices are equipped with heart rate (HR) measurement capabilities. However, the validity of HR data obtained from such trackers has not been thoroughly assessed outside the laboratory setting.
OBJECTIVE: This study aimed to investigate the validity of HR measures of a high-cost consumer-based tracker (Polar A370) and a low-cost tracker (Tempo HR) in the laboratory and free-living settings.
METHODS: Participants underwent a laboratory-based cycling protocol while wearing the two trackers and the chest-strapped Polar H10, which acted as criterion. Participants also wore the devices throughout the waking hours of the following day during which they were required to conduct at least one 10-min bout of moderate-to-vigorous physical activity (MVPA) to ensure variability in the HR signal. We extracted 10-second values from all devices and time-matched HR data from the trackers with those from the Polar H10. We calculated intraclass correlation coefficients (ICCs), mean absolute errors, and mean absolute percentage errors (MAPEs) between the criterion and the trackers. We constructed decile plots that compared HR data from Tempo HR and Polar A370 with criterion measures across intensity deciles. We investigated how many HR data points within the MVPA zone (≥64% of maximum HR) were detected by the trackers.
RESULTS: Of the 57 people screened, 55 joined the study (mean age 30.5 [SD 9.8] years). Tempo HR showed moderate agreement and large errors (laboratory: ICC 0.51 and MAPE 13.00%; free-living: ICC 0.71 and MAPE 10.20%). Polar A370 showed moderate-to-strong agreement and small errors (laboratory: ICC 0.73 and MAPE 6.40%; free-living: ICC 0.83 and MAPE 7.10%). Decile plots indicated increasing differences between Tempo HR and the criterion as HRs increased. Such trend was less pronounced when considering the Polar A370 HR data. Tempo HR identified 62.13% (1872/3013) and 54.27% (5717/10,535) of all MVPA time points in the laboratory phase and free-living phase, respectively. Polar A370 detected 81.09% (2273/2803) and 83.55% (9323/11,158) of all MVPA time points in the laboratory phase and free-living phase, respectively.
CONCLUSIONS: HR data from the examined wrist-worn trackers were reasonably accurate in both the settings, with the Polar A370 showing stronger agreement with the Polar H10 and smaller errors. Inaccuracies increased with increasing HRs; this was pronounced for Tempo HR.

Matched MeSH terms: Validation Studies as Topic
Effects of Selective Serotonin Reuptake Inhibitors (SSRIs) therapy on the female sexual response cycle of women with major depression

Hatta S, Duni A, Ng CG, Lin N, Marhani M, Das S, et al.

Clin Ter, 2013;164(1):11-5.
PMID: 23455735 DOI: 10.7417/T.2013.1503

Depression and its treatment may influence all aspects of the female sexual function from desire to sexual satisfaction. This study aimed to examine the components of the female sexual response cycle (SRC) of women with major depression treated with Selective Serotonin Reuptake Inhibitors.

Matched MeSH terms: Validation Studies as Topic