Showing 5 results for Validity
Mohammad Gholami Fesharaki, Esfandyar Azadmarzabadi,
Volume 14, Issue 3 (7-2011)
Abstract
Background: Noticing the importance of measuring physical activity in medical investigations, this study was conducted to analyze the validity and reliability of the researcher-made Physical Activity Questionnaire (AFPAQ) of Azad and Fesharaki, so as to achieve a suitable tool.
Materials and Methods: In this cross-sectional study, the sample population all army men selected through two-stage cluster sampling according to Morgan samples table.
After investigating content validity, confirmatory and explanatory factor analysis, Pearson correlation (using general health questionnaire (GHQ) and test-retest coefficient were used to examine construct and predictive validity, respectively. Data analysis was done using SPSS software version 15 and Amos version 16.
Results: This study was done on 724 subjects including 54 (7.3%) women and 685 (92.7%) men. The CVR coefficient was 60% for this study. Also, explanatory factor analysis showed three factors, including physical activity at work, physical activity at leisure time, and exhaustion with 45% total variance and 71% Kaser-Meyer-Olkin Index. These factors were also confirmed by confirmatory factor analysis (AGFI=0.963, RMSEA=0.053). The reliability of the questionnaire was %40 and %70 using Cronbach's Alpha and test-re-test method, respectively.
Conclusion: Since validity and reliability indexes of the questionnaire were reported desirable, AFPAQ can be considered a valid and reliable questionnaire for measuring physical activity
Mohammad Gholami Fesharaki, Davood Talebian, Zohreh Aghamiri, Masome Mohamadian,
Volume 14, Issue 5 (11-2011)
Abstract
Background: This study was done to assess the validity and reliability of Najmie Job Satisfaction Questionnaire (NJSQ) in order to provide a suitable tool for measuring job satisfaction (JS).
Materials and Methods: In this cross-sectional study, 212 staff members at Najime Subspecialty Hospital were selected by stratified sampling method. The participants took NJSQ. After evaluating content validity, confirmatory and explanatory factor analysis and Cronbach's Alpha were used to examine construct validity and reliability of the questionnaire, respectively. SPSS software version 16 was used to analyze the data.
Results: The samples, 212 subjects, consisted of 181 (86.6%) women and 28 (13.4%) men. The explanatory factor analysis showed 4 factors with 54% total variance and 0.82% Kaser-Meyer-Olkin index. These factors were also verified by confirmatory factor analysis (P=0.368). In addition, the reliability of the questionnaire was reported to be 0.88% based on Cronbach's alpha method.
Conclusion: Since validity and reliability indexes were reported suitable, NJSQ can be considered a valid and reliable questionnaire for measuring JS.
Fatemeh Alian Fini, Morteza Ghasemi,
Volume 19, Issue 4 (7-2016)
Abstract
Background: Mental health is an important aspect of health and the World Health Organization defines health as "full physical, mental and social welfare, and not merely the absence of disease". Given that 79 percent of the health education focused on physical aspects, in fact, the most focus is on biological parameters of people to measure their health. So we need a valid questionnaire to measure mentally and physically the health of people in the research community.
Materials and Methods: The Holistic Wellness Model reflects that the researches is done on health which is different in variant cultures perspectives.102 managers and officials of Islamic Azad University of Arak participated in this studyin 2014 and the validity and reliability of the questionnaire were analyzed using the software SPSS20.
Results: 102 people were enrolled in this study, 74 males (72.5%) and the rest were female. Cronbach' Alpha coefficient for the entire questionnaire was 0.93.In all six aspects which reviewed, the correlation between all questions and its perspective was measured by using Spearman test. There was a significant positive correlation among all the questions and the related aspects.
Conclusion: The Persian version of physical and mental health questionnaire, based on the Holistic Wellness Model, is suitable to assess the health of people. Also, validity and reliability is appropriate.
Daryoush Khajavi,
Volume 20, Issue 8 (11-2017)
Abstract
Abstract
Background: Balance deficiency, falls and fear of fall are important problems that can resulted in reversed health outcomes including decreased quality of life. The purpose of this study was surveying factor structure, validation, and reliability determination of Persian translated version of Activities-specific Balance Confidence scale in community-dwelling older adults of Arak city.
Materials and Methods: Research method was descriptive in form of psychometry. The statistic population was older adults of Arak in year 2012 and 308 subjects with mean age 69.38 years were selected availably. Data were collected by Persian translated version of Activities-specific Balance Confidence that is a 16-item scale and evaluates balance confidence in activities of daily living. Data were analyzed by Exploratory Factor Analysis. Test-retest and internal reliability were calculated by Pearson correlation coefficient and Chronbach’s Alpha. Data were analyzed with SPSS-16.
Results: The findings resulted in extraction of one factor with eigenvalue over one that explained 82.89% of total variance. Test-retest reliability between 1 to 4 weeks and internal reliability (Chronbach’s alpha) were 0.82 and 0.98, respectively. Gutmann split-half correlation coefficient and intra-class correlation coefficient were calculated 95% and 85%, respectively.
Conclusion: Persian translated version of Activities-specific Balance Confidence (ABC-F) is a valid and reliable tool for Iranian community-dwelling older adults that can be used in clinical and research purpose.
Seyed Mohammadreza Alavizadeh, Mojgan Sepah Mansour, Mostafa Nokani, Somaye Entezari, Mehrdad Sabet, Mohammadreza Seirafi, Roxana Kaekhaneh, Amirshahab Shahabi,
Volume 24, Issue 4 (9-2021)
Abstract
Background and Aim: The World Health Organization has recently identified COVID-19 as a pandemic. The outbreak of the disease has caused many people around the world to become extremely frightened and they show phobic signs. The purpose of the present study was to develop and normalize of Germophobia Questionnaire (GPQ).
Methods & Materials: The participants were 113 individuals (74-female) of the Iranian population. They completed the GPQ and Y-BOCS.
Ethical Considerations: All ethical principles and privacy policies of the results informed the participants. This study was approved in the second session of the Psychological Committee of the Islamic Azad University of Tehran’s province in March 2020.
Results: The results illustrate that the GPQ has acceptable internal consistency with Cronbach’s alpha coefficient (a=0.67), reliability coefficients with split-half (0.72), and one-week test-retest (r=0.73); in addition, the GPQ demonstrate moderate convergent validity with contamination obsessions checklist of Y-BOCS (r=0.44) as a convergent coefficient; and finally, the exploratory factor analysis indicates three-factors of the GPQ.
Conclusion: Based on these findings, the GPQ has acceptable and good psychometric properties; researchers can use the GPQ as a reliable and valid instrument for assessing the germophobia levels in epidemic and pandemic crises like COVID-19.
