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Objective:To test the reliability of the short version of the depression-anxiety-stress scale (DASS-21) in adolescents through generalizability theory.Methods:Total of 458 adolescents from three middle schools in Guizhou and Sichuan province were surveyed with the DASS-21 from November to December 2021.Based on multivariate generalization theory(MGT), the generalization coefficients, reliability indexes and variance contribution ratios were calculated.mGENOVA 2.1 was used for data analysis.Results:The generalizability coefficient and reliability index for the total scale of DASS-21 were 0.927 and 0.922, respectively.The generalizability coefficients of depression, anxiety and stress subscales were 0.808-0.840, and the dependability indexes were 0.789-0.832.The contribution ratios of depression, anxiety and stress subscales to the general score were 33.20%, 33.94% and 32.86%, respectively.The stress subscale (34.95%) contributed the most to the relative error variance, and the anxiety subscale (36.98%) contributed the most to the absolute error variance.Conclusion:The DASS-21 has excellent test reliability in adolescents, and it can be used both as the norm-referenced test and the criterion-referenced test in the actual assessment of negative emotions in adolescents.
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Background: The Internet is an inevitable part of life especially in the education sector, but at the same time irrational use of the Internet causes behavioral disorders. A high number of personality disorders such as impulsive behavior, depression, anxiety, and stress were also observed among medical students. Aim and Objectives: Hence, the present study hypothesized to find out the association of depression, anxiety, and stress with Internet addiction (IA) among young medical students. Materials and Methods: A cross-sectional survey was conducted among 250 1st-year medical students after taking ethics approval and written informed consent. Personal information and socio-demographic profile of participants were obtained. Young IA Test and Depression Anxiety Stress Scale (DASS-21) survey questionnaire was self-administered by participants. To identify the risk and protective factors for IA with DASS-21 step-wise multiple linear regression analyses were performed. Results: The prevalence of IA was 24.0 % with mean scores (±Standard Deviation [SD]) of 39.01 (±16.99) among the medical students. Depression, anxiety, and stress mean scores (±SD) were 5.44 (±4.21), 4.94 (±3.84), 6.77 (±3.83), respectively. Students with IA had a statistically significant difference (P = 0.001) in all domains of DASS-21 over the non-internet addicted. A statistically significant positive relationship of IA with depression (coefficient of determination (R2), (R2 = 0.22)), anxiety (R2 = 0.26), and stress (R2 = 0.33) were observed. Conclusions: 1/4th of the medical students were internet-addicted and 3.0% having severe anxiety. 22.0% of depression, 26.0% of anxiety, and 33.0% of stress among young medical students are attributable to IA. The rational use of the internet should be learned for psychological health and well-being.
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Objective To test the reliability and validity of the short version of depression-anxiety-stress scale (DASS-21) for students in the disaster region.Methods DASS-21 and the Chinese version of UCLA PTSD Reaction Index for DSM-IV,Revision I were used to evaluate psychological health among 876 students from grades 5 to 9 after Ya' an earthquake.Results (1) Each of the items had a good distinction degree,with CR value ranging from 9.268 to 22.438 (P＜ 0.01),and the correlation coefficients ranged from 0.306 to 0.742.(2)The Cronbach' s alpha coefficients ranged from 0.781 to 0.911.(3) The correlation coefficients between total score and each dimension ranged from 0.714 to 0.914,and the correlation coefficient between PTSD and total DASS score,depression anxiety and stress score was 0.626-0.774.(4)Through the item analysis and explore factor analysis,the revised scale contained 21 items and 3 subscales which could explain 47.813％ of the total variance(KMO =0.937,x2 =3126.85,df=210,P＜0.01),and the results of confirmatory factor analysis supported the three-factor model (x2/df=4.180,P＜0.01,PCFI =0.728,CFI =0.904,IFI =0.905,TLI =0.881,and RMSEA =0.060),and the load of each item was between 0.339 to 0.715.Conclusion The short version of DASS-21 is reliable and valid,and can be used as a tool for post-disaster stress assessment on local students.
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Scales 21-item (DASS-21) has been widely used ever since the establishment of its validity. To consolidate the evidence of the BM DASS-21 validity by examining its concurrent validity. Methods: The BM DASS was administered together with the Hospital Anxiety and Depressive Scale (HADS) to a total of 246 patients at International Islamic University Malaysia (IIUM) Infertility Centre. Results: The anxiety domain of BM DASS-21 had good correlation with anxiety domain in HADS (0.61) but for DASS depressive domain, it had modest correlation with its respective domain in HADS (0.49). Conclusions: The results of this study further ensconced the evidence that the BM DASS-21 had relatively satisfactory psychometric properties for clinical subjects in Malaysia.