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Showing 4 results for Factor Analysis

Mohammad Masoud Vakili, Ali Reza Hidarnia, Shamsaddin Niknami,
Volume 18, Issue 1 (3-2012)
Abstract

Background & Aim: It is crucial to assess communication skills among health workers using valid culture-based instruments. This study aimed to develop and assess psychometric properties of the Interpersonal Communication Skills Scale among Zanjan Health Volunteers.

Methods & Materials: In this study, a total of 191 health volunteers participated in a self-rating assessment of the Communication Skills Scale (CSS). Moreover, 14 experts were asked to rate each item based on the relevance, clarity, and simplicity. Through a literature review, we developed an instrument with 43 items. The validity of the instrument was determined using the impact item method, content validity ratio (CVR), content validity index (CVI), face validity and exploratory factor analysis. Reliability of the instrument was reported by Alpha Cronbach coefficient. The CSS finally contained 35 items, divided into two categories: general and specific communication skills.

Results: Of 43 items, those with impact item index over 1.5, CVR over 0.51, and CVI over 0.79 were considered as valid while the rest were discarded resulting in a 35-item scale. Factor analysis was carried out to determine the relationship among the items of the CSS. Exploratory factor analysis reduced the list of items to 30, which were divided into seven groups with a minimum eigenvalue of 1 for each factor, capable of predicting 68.8% of the variance. Internal reliability of the scale was determined by alpha Cronbach coefficient (0.91).

Conclusion: The results of this study indicated that the CSS is a valid and reliable instrument for assessment of the communication skills among health volunteers in Zanjan. These findings could be used for developing similar instruments in other health worker groups.


Majid Mohammadshahi, Mehrnoush Zakerzadeh, Samira Hashemi, Fatemeh Haidari,
Volume 19, Issue 1 (7-2013)
Abstract

  Background & Aim: There is little information regarding relationship between maternal dietary pattern and infant anthropometric parameters at birth. This study was carried out to determine relationship between dietary patterns in pregnancy with infants' anthropometric parameters .

  Methods & Materials: In this cross-sectional study, 94 pregnant women (GA: 37-40 weeks) referred to Ahvaz Razi hospital were selected. Anthropometric parameters were measured. The dietary intakes were assessed using a semi-quantitative food frequency questionnaire. Factor analysis was used to identify dietary patterns. Statistical analysis was done in the SPSS. 

  Results: In this study, three major dietary patterns including "healthy", "traditional" and "western" dietary patterns were identified. After adjusting of confounders (age, physical activity, energy intake, pregnancy weight gain and infant sex), the relationship between dietary patterns with birth weight, height and head circumference were exhibited in three models. The relationship between healthy dietary pattern and infant weight, height and head circumference at birth was significantly positive in all models (P<0.05). Western dietary pattern had significant negative relationship with head circumference in the model 1 and 2. Moreover, it had negative relationship with birth weight in the model 1 (P<0.05). Traditional dietary pattern did not show any significant relationship with anthropometric parameters at birth.

  Conclusion: The present study found significant relationship between maternal dietary patterns with anthropometric parameters at birth. Further prospective studies are suggested to confirm the findings.

  


Hamid Sharif Nia, Saeed Pahlevan Sharif, Amir Hossein Goudarzian, Ali Akbar Haghdoost, Abbas Ebadi, Mohammad Ali Soleimani,
Volume 22, Issue 3 (10-2016)
Abstract

Background & Aim: Increasing understanding of death anxiety among different cultures and patient populations is critical to provide quality patient care. Researchers who investigate death anxiety, are looking for a reliable and valid instrument compatible with culture in order to achieve this goal. The aim of the study was to evaluate the psychometric properties of the Templer’s Death Anxiety Scale-Extended (TDAS-E) among a sample of chemical veterans of Iran–Iraq warfare.

Methods & Materials: In this methodological study, 300 veterans completed the Persian version of the 51-item TDAS-E in 2015. The face, content and construct validity (convergent and discriminant validity) of the TDAS-E were assessed. Also, its reliability was measured using Cronbach’s alpha coefficient, construct reliability and intra correlation coefficient.

Results: Results of exploratory and confirmatory factor analyses extracted four stable distinct factors including fear of the hereafter, fear of facing death, fear of the shortness of life, fear of dying following an incident and mishap. The fitness of the four-factor model of the Templer’s death anxiety construct was approved based on standard indices (c2/df=2.832, GFI=.915, AGFI=.873, PCFI=.657, PNFI=.612, RMSEA=.078). Discriminant and convergent validity of all factors were acceptable. Also, scale reliability was confirmed using Cronbach’s alpha coefficient (0.88), construct reliability (higher than 0.70) and intra correlation coefficient (0.87).

Conclusion: The results of the current study revealed that the four-factor construct of TDAS-E had suitable validity and reliability among Iranian chemical warfare veterans. Given the proper psychometric properties, this scale can be used in future research to evaluate death anxiety in this population.

Background & Aim: Increasing understanding of death anxiety among different cultures and illness populations is critical to provide quality patient care. Researchers who investigate death anxiety, are looking for a reliable and valid instrument compatible with culture in order to achieve this goal. The aim of the study was to evaluate the psychometric properties of the Templer’s Death Anxiety Scale-Extended (TDAS-E) among a sample of chemical veterans of Iran–Iraq warfare.

Methods & Materials: In this methodological study, 300 veterans completed the Persian version of the 51-item TDAS-E in 2015. The face, content and construct validity (convergent and discriminant validity) of the TDAS-E were assessed. Also, its reliability was measured using Cronbach’s alpha coefficient, construct reliability and intra correlation coefficient.

Results: Results of exploratory and confirmatory factor analyses extracted four stable distinct factors including fear of the hereafter, fear of facing death, fear of the shortness of life, fear of dying following an incident and mishap. The fitness of the four-factor model of the Templer’s death anxiety construct was approved based on standard indices (c2/df=2.832, GFI=.915, AGFI=.873, PCFI=.657, PNFI=.612, RMSEA=.078). Discriminant and convergent validity of all factors were acceptable. Also, scale reliability was confirmed using Cronbach’s alpha coefficient (0.88), construct reliability (higher than 0.70) and intra correlation coefficient (0.87).

Conclusion: The results of the current study revealed that the four-factor construct of TDAS-E had suitable validity and reliability among Iranian chemical warfare veterans. Given the proper psychometric properties, this scale can be used in future research to evaluate death anxiety in this population.


Maryam Damghanian, Minoo Pakgohar, Mahmoud Tavousi, Nahid Dehghan Nayeri, Maryam Najafi, Roghieh Kharaghani, Barbara Broome , Zinat Ghanbari,
Volume 23, Issue 4 (1-2018)
Abstract

Background & Aim: Urinary incontinence is a common disorder in women. Pelvic floor muscle exercise is one of the effective treatment methods. Self-efficacy is considered an effective and strong predictor of willingness to perform and continue these exercises. In Iran, there is no appropriate tool for assessing self-efficacy. So this study was performed to determine the psychometric properties of the Broome scale in women with urinary incontinence.
Methods & Materials: A psychometric study of the Broome scale was conducted on women with urinary incontinence who referred to health centers affiliated to Tehran University of medical sciences in 2015.In this study, following processes were implemented: translation, back translation, face validity, content validity using CVR and CVI, reliability using Cronbach’s α coefficient, and construct validity using explanatory factor analysis.
Results: The face validity was confirmed through the modification of ambiguous items based on the patients’ views. Content validity (CVR= 0.8 and CVI= 0.8 to 0.9) and reliability (Cronbach’s α= 0.96) were also confirmed. Explanatory factor analysis showed two factors with eigen value more than 1 including pelvic floor exercise self-efficacy in usual and special situations. These factors explained 82.08 percent of the total variance.
Conclusion: The reliability and validity of the Broome scale were confirmed for using by Iranian women with urinary incontinence, and this scale can be used to measure these women's self-efficacy in performing pelvic floor exercises.
 

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