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Showing 6 results for Validity
Persian version validation in impact of event Scale-Revised
L. Panaghi, M. Hakim Shooshtari, J. Atari Mogadam,
Volume 64, Issue 3 (5-2006)
Abstract

Background: This study investigated reliability and validity of the Persian version of Impact of Event Scale-Revised (IES-R) in a sample of people from Bam after the 2003 earthquake.

Methods: The study was performed in 272 people, 4 months after Bam earthquake. For evaluating internal consistency we used α chronbach and for test-retest reliability (after 3 weeks) we used Pearson correlation coefficient. For assessing convergent validity, 50 samples completed GHQ 28(General Health Questionnaire 28) in addition to IES-R.

Results: The Persian version of IES-R has good internal consistency (α chronbach=0.67-0.87) and test-retest reliability (r=0.8-0.98 , P<0.001) and also good convergent validity. Finally, factor analysis was conducted and 3 -factor solution which explained 41.6% of the variance, was retained.

 Conclusion: In spite of good internal consistency, test-retest reliability and convergent validity regarding the result of factor analysis, there is necessity for changing some items corresponding to the Iranian culture.


Reliability and validity of Anxiety and Depression Hospital Scales (HADS): Iranian patients with anxiety and depression disorders
Kaviani H, Seyfourian H, Sharifi V, Ebrahimkhani N,
Volume 67, Issue 5 (8-2009)
Abstract

Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Iranian researchers and scientists in the fields of psychiatry and psychology undoubtedly need to spend more time and make considerable efforts to prepare and validate Persian versions of measurements. The present study was designed to validate HADS in Iranian clinically anxious and depressed patients compared to normal population.
Methods: 261 anxious and depressed patients referred to the inpatient clinic of Rouzbeh Psychiatric Hospital, Tehran, and 261 healthy volunteers (matched for their sex) were tested using HADS, and two additional clinical tools, ie., BDI & BAI. Then the patients were interviewed by a psychiatrist or a psychologist (using DSM IV checklist) and rated for their anxiety and depression severity levels based on a 10-point scale from 1 to 10. BDI and BAI were regarded as objective device providing other external criteria to examine validity further. Moreover, to assess reliability 10% of the patients (n= 27) were randomly selected and re-tested after three days.
Results: Findings showed that all measures and their subscales proved to be valid and reliable with good internal consistencies in Iranian depressed and anxious patients. This study provides clinicians and researchers with Iranian cut-off points for HADS, BDI and BAI, to be used in their settings, to categorize the patients with different levels of psychopathology.
Conclusion: The results support the use of all the measures and subscales examined in this study in clinical and research settings. The cut-off points obtained in this study are somehow different from those presented by original authors which will be discussed from cultural point of view in this report.


Development, cultural adaptation, reliability and validity of persian version of sino-nasal outcome test in chronic rhinosinusitis: a brief report
Naghdi S, Anjeie F, Nakhostin Ansari N, Fathali M,
Volume 70, Issue 11 (2-2013)
Abstract

Background: The sino- nasal outcome test 20 (SNOT-20) is a self- report measure for the assessment of patients with rhinosinusitis. The aim of the present study was to translate the SNOT-20 into Persian, and to evaluate the reliability and validity of the Persian SNOT-20.
Methods: The SNOT-20 was translated from English into Persian. Thirty patients with chronic rhinosinusitis completed the Persian SNOT-20 two times with an interval of 1-2 weeks. Thirty healthy volunteers completed the Persian SNOT-20 for the evaluation of discriminant validity.
Results: Cronbach's alpha coefficient values were high with 0.88 for test and 0.90 for retest. ICC for test-retest reliability was 0.95. The scores of patients were significantly higher than those of the healthy subjects. There were no floor and ceiling effects.
Conclusion: The Persian SNOT-20 is a reliable and valid measure for the assessment of Persian speaking patients with rhinosinusitis.


Validity of self-reported hypertension in Mashhad population: brief report
Hamid Reza Bahrami Taghanaki , Ehsan Mosa Farkhani , Saeed Bokaie , Seyed Javad Hoseini , Pegah Bahrami Taghanaki , Sima Barid Kazemi ,
Volume 77, Issue 4 (7-2019)
Abstract
Background: Researchers and health specialists are increasingly obtaining information on chronic illnesses from self-reports. This study validates self-reports of hypertension, based on a recently fielded survey in Mashhad City, Iran.
Methods: In this cross-sectional study, we used the results of 2015 census in Mashhad City, a population based survey of people over the age of 30 (n=300745) to determine the proportion of self-reported hypertension. In this study, the data of the studied population was extracted from the databank of Sina Electronic Health Record System (SinaEHR®) and patients with ICD10 codes including I10 and I11 approved by doctors as a reference. Finally using SPSS software, version 20 (SPSS Inc., Chicago, IL, USA) and MedCalc (https://www.medcalc.org/calc/odds_ratio.php), sensitivity, specificity, positive predictive value, negative predictive value were calculated with 95% confidence interval.
Results: Sensitivity of self-reported hypertension was 23.92% (CI95%: 23.43-24.41), specificity 97.03% (CI95%: 96.97-97.09), Positive Linkelihood Ratio 8.06% (CI95%: 7.82-8.30), Negative Linkelihood Ratio 0.78% (CI95%: 0.78-0.79), Positive Predictive Value 46.34% (CI95%: 45.60-47.08), Negative Predictive Value 92.25% (CI95%: 92.20-92.29). The self-reported sensitivity to hypertension in males, Iranian individuals, single, aged 60 and over, body mass index lower 18.5 individual with university education was higher, which was 24.67%, 31.09%, 30.07%, 32.43% and 26.03% respectively.
Conclusion: Although the sensitivity of self-reported hypertension was poor in this study, but specificity and positive and negative predictive values were fairly good.

Development of a persian version of the BREAST-Q and validity and reliability of the reconstruction module for the assessment of the quality of life and patient satisfaction following breast surgery
Bita Eslami, Ramesh Omranipour , Bahare Hesamifar, Zahra Behboodi Moghadam , Amirmohsen Jalaeefar,
Volume 78, Issue 11 (2-2021)
Abstract
Background: Breast cancer is the most common cancer in women and its treatment includes various surgeries. Breast-Q is a new patient-reported outcome instrument for breast surgery and it should be validated appropriately for clinical research. This study aimed to develop the Persian version of the Breast-Q and validate the reconstruction module to evaluate the quality of life and satisfaction of Iranian women with a previous history of breast reconstruction.
Methods: This study was descriptive and analytical cross-sectional. The study population consisted of women with a previous history of breast cancer and various breast surgeries referred to the outpatient clinic of Cancer Institute, Imam Khomeini Hospital from September 2017 to October 2019, using convenience sampling. After obtaining permission from the MAPI institute and translating all questionnaires into Persian, the validity, and reliability of the breast reconstruction module were evaluated. To confirm face validity, a questionnaire was given to patients to judge each item. To confirm the content validity of the questionnaire, two qualitative and quantitative methods were used. Content validity ratio (CVR) was calculated based on the expert opinion (Lawshe formula). Waltz & Bausell’s method was used to examine the content validity index (CVI). Finally, a new version of the questionnaire was assessed in 20 women who had undergone TRAM flap breast reconstruction at least 6 months ago.
Results: After translation of the questionnaire into Persian, and face and content validation process, the 116 items of the first questionnaire converted to 72 with an acceptable impact score greater than 1.5 and CVR and CVI. The internal validity of the breast reconstruction module was approved by Cronbach's alpha value of 0.94.
Conclusion: Considering the limitation of the specific questionnaires for various breast surgery procedures, the Breast-Q questionnaire can be an efficient tool for the evaluation of the quality of life and satisfaction in patients. Since the translation of the questionnaire has become valid and reliable, it can be used for future research by other researchers.

A guide for conducting exploratory factor analysis in medical science research using SPSS: a brief report
Jafar Hassanzadeh, Haleh Ghaem Maralani , Fatemeh Jafari , Aboubakr Jafarnezhad,
Volume 81, Issue 11 (1-2024)
Abstract
Background: It is necessary to examine different dimensions of psychometrics in different sciences, and paying attention to the accuracy and precision of the results can lead to the construction of reliable and valid tools; In this article, exploratory factor analysis has been done using SPSS software, version 26.
Methods: This research was a brief report that was conducted between 30 January 2023 to 10 October 2023. Reliability means reproducibility and continuity of results in the same conditions, and validity means matching the test with the purpose for which it was designed. Validity includes face, content, criterion and construct validity. To determine construct validity, various methods are used including: convergent validity, divergent validity, internal consistency and factor analysis. Factor analysis is a method that aims to simplify a complex set of data and allows researchers to find a specific pattern among many variables and complex relationships between them which includes exploratory factor analysis and confirmatory factor analysis. Exploratory factor analysis is a statistical technique that is used to estimate hidden factors or variables and reduce the large number of variables.
Results: exploratory factor analysis is a statistical method that is used by reducing the number of variables and exploring the underlying structure of a large set of variables with the aim of discovering factors or hidden variables, and its basic assumption is that any variable may be related to any factor. It tries to use factor loadings to discover the factorial structure of the data and by identifying the basic structures, grouping the factors by considering the common meaning of the variables.
Conclusion: Reliability means repeatability and validity of the degree of accuracy of the results which are measured through different methods. Exploratory factor analysis uses construct validity measurement methods to simplify the data and provide more reliable and valid tools, so it is very important to pay attention to the accurate and correct measurement of the results in the validation of health system tools.

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