Showing 6 results for Factor Analysis
F Hosseyni Esfahani, A Jazayeri, P Mirmiran, Y Mehrabi, F Azizi,
Volume 6, Issue 1 (6-2008)
Abstract
Background and Aim: This study aimed to determine dietary patterns in district 13 of Tehrani adults and evaluate its association with socio-demographic and lifestyle factors
Materials and Methods: This cross-sectional study was conducted on 343 male and 453 female aged 18-65 years who participated in Tehran Lipid and Glucose study. Usual dietary intakes were assessed with food frequency questionnaire. Dietary patterns were determined by factor analysis based on 24 food groups identified by similarity of nutrients. Three major dietary patterns were identified: healthy (HDP), western (WDP) and traditional (TDP). Lifestyle and socio-demographic characteristics gathered with pre-tested questionnaires. Multiple regression models separately for men and women were fitted to assess the relationships.
Results:The mean age(SD) of men and women were 40(13) and 36(12) respectively. WDP characterized by a higher consumption of salty snacks, sauces, sweetened beverages, processed meats and refined grains, and the HDP characterized by greater intakes of vegetables, low fat meats, tea and coffee, legumes and nuts.WDP had the most variance among 3 dietary patterns. The mean factor score of HDP was higher in women than in men(P<0.05) after adjusting for age and total energy intake. Adherence to a WDP was higher among younger participants (men: β=-0.46, women:-0.34, P<0.001). The percent of married individuals were the most in fourth quartiles of HDP score among the other quartiles (P<0.01) and married men were less likely to follow WDP (β=-0.25, P<0.01).
Conclusion:Three major dietary patterns were found with factor analysis: western, healthy and traditional. Younger and single individuals had more adherence to WDP and women had higher score in HDP.
Z Shahhosseini, M Simbar, A Ramezankhani, H Alavi Majd,
Volume 9, Issue 1 (8-2011)
Abstract
Background and Aim: Considering the social and cultural characteristics of Iranian adolescents, none of the quantitative instruments designed so far to assess their health needs is quite appropriate. The purpose of this study was to design a valid and reliable questionnaire to assess the health needs of Iranian adolescent females.
Materials and Methods: Both qualitative and quantitative approaches to instrument development were adopted in this study conducted in the District of Sari in the north of Iran. Sampling was objective-based, with an attempt to have female adolescent sample as varied as possible. In the qualitative phase, a content analysis approach was used to explore the concept of health needs as seen by female adolescents. Data were collected using 8 focus group discussions (FGDs) with the presence 6-10 adolescents 12-18 years old in each FGD, as well as 11 semi-structured interviews, each one involving 11 well-informed individuals. In the quantitative phase, the psychometric properties, including content validity, face validity, construct validity, concurrent validity, internal consistency, and test-retest reliability, were determined.
Results: Five themes were identified in the qualitative phase of study, including psycho-emotional health, social health, physical health, and educational needs, as well as spiritual beliefs. The mean scale-level content validity index (S-CVI) was found to be 0.92. The factor structure of the instrument was identified by doing a Principal Component Analysis. Five factors were extracted with a total variance account of 45.37%. The reliability and consistency of the instrument were established with the Cronbach's alpha coefficient (0.90) for the entire scale and test-retest reliability with a 2 week-interval Intraclass Correlation Coefficient (ICC=0.984, p<0.001).There was a concurrent correlation between the instrument and Pediatric Quality of Life Inventory (PedsQL TM 4.0) (r=0.66, p<0.001).
Conclusion: The instrument developed in this study is a valid, reliable and culturally appropriate instrument for assessment of health needs of Iranian adolescent females.
Aziz Kassani, Mahmoud Reza Gohari, Mir Taher Mousavi, Mohsen Asadilari,
Volume 10, Issue 2 (10-2012)
Abstract
Background and Aim: Social capital composed of networks, norms and values, which facilitates cooperation within and between groups to achieve mutual benefits and common goals. Social capital increases the benefits of investing in physical and human capital. In a society that favors more social capital, collaboration is easier. This study investigates the validity and reliability of a social capital tool, which had been administered through a large population-based survey using factor analysis.
Materials and Methods: Data were obtained from Urban Health Equity Assessment and Response Tool (Urban HEART-1) survey in Tehran. Factor analysis is a method of discovering structural position of variables to reduce them into a limited number of components which are more fundamental. The reliability of the questionnaire and main components of the tool were investigated through factor analysis.
Results: According to factor analysis, three main components of social capital including, individual trust, cohesion/ social support and social trust/associative relations, were recognized. These three components explained 66.14% of total variance of the social capital tool. Also, overall Cronbach's alpha coefficient was 0.88 which indicates high reliability of the questionnaire.
Conclusion: Social capital tool, which was administered in Urban HEART project, covers the main components of social capital framework with high reliability and validity, which is suitable to be used in other population-based surveys.
Hashem Mohammadian, Jafar Kord Zanganeh, Parvaneh Kiani, Farzaneh Sharifat,
Volume 14, Issue 4 (3-2017)
Abstract
Background and Aim: Children are one of the most vulnerable groups in the population. Child abuse is a complex phenomenon with multiple causes. The purpose of this study was to do a confirmatory factor analysis of child abuse potential inventory among Ahvazi children in Ahvaz, Iran.
Materials and Methods: This was a descriptive-analytical study, including all Ahvazi primary school pupils aged 8-13 years in the academic year 2015-2016.
The sample size for confirmatory factor analysis was determined based on the number of questions per parameter.The variance was extracted on the basis of mean scores and
composite reliability for structural equation modeling was determined based on the first-order and second-order confirmatory factor analysisusing the LISREL software.
Results: Confirmatory factor analysis revealed a short form of the child abuse's original 3-actor structure, including the psychological, physical and neglect scales. The outcomes indicated that the firstorder model was a better fit for the data than the second.
Conclusion: It can be concluded that the Ahvazi version of the child abuse potential inventory questionnaire is acceptable from a psychometric point of view. We think it is essential to take into consideration the diversity of perspectives between parents and children in future research in this area.
Behzad Shalchi, Seyed Ghasem Seyed Hashemi,
Volume 15, Issue 3 (12-2017)
Abstract
Background and Aim: The hypersexual disorder is described as multiple unsuccessful attempts to control or diminish the amount of time spent on engaging in sexual fantasies, urges, and behaviors in response to dysphoric mood states or stressful life events. The purpose of the present research was to determine the validity, reliability and factor structure of the Hypersexual Behavior Inventory (HBI) for use for students, developed by Reid and colleagues.
Materials and Methods: In this descriptive study, 300 male students of Azarbaijan Shahid Madani University were selected by cluster random sampling on the basis of school and field of study. Data were collected using the HBI, and its reliability and validity were determined using Cronbach’s alpha and confirmatory factor analysis (CFA).
Results: The reliability coefficients obtained for control, consequences, coping components and total scale were 0.82, 0.80, 0.86 and 0.90, respectively, which showed good reliability. In addition, the results of factor analysis showed a statistically significant association between observed variables (questions) and the latent structures (factors), indicating an appropriate/desirable fitness for the three-factor structure in the sample (GFI = 0.91, AGFI= 0.88, CFI= 098, RMSEA= 0.057).
Conclusion: The Hypersexual Behavior Inventory is a valid and reliable tool to be used for the students, and, therefore, the use of this tool in future research is recommended.
Jafar Kordzanganeh, Hashem Mohamadian,
Volume 17, Issue 1 (6-2019)
Abstract
Background and Aim: Delays in childbearing, in addition to creating health risks for the mother and the child, may lead to permanent parental bereavement. The purpose of this study was psychometric assessment of the validity and reliability of the Iranian version of attitude toward reproductive and childbearing inventory (ATRCI) in women without a history of pregnancy.
Materials and Methods: This study was done on 235 women without a history of pregnancy selected by multi-stage sampling in the South of Iran. They completed a fertility and childbearing attitude questionnaire. The validity and reliabilty of the ATRCI were determined using SPSS-16 software, the statitical tests being Cronbach's alpha coefficient and exploratory factor analysis.
Results: The mean age of the women was 24.47 ± 4.1 years, and the Cronbach's alpha total coefficient was 0.888. The KMO and Bartlett's test of sphericity value (0.890) was significant.
In this study, in addition to the main components of the questionnaire, the childbirth postponement component was also extracted; they explained 63.01% of the total variance related the attitude toward fertility and childbearing.
Conclusion: The 4-component Iranian version of the attitude toward fertility and childbearing inventory was found to have acceptable psychometric validity and reliability. It is recommended that in the future studies this inventory be used in intervantional studies and heath and demographic programs for women without a history of pregnancy.
