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Psychometric properties of the persian version of self-management scale for a sample of Iranian patients with epilepsy.

Dehghan Nayeri N, Aliasgharpour M, Yadegari MA - Nurs Midwifery Stud (2013)

Bottom Line: Construct validity, exploratory and confirmatory factor analysis confirmed all the dimensions except for some safety and pharmacotherapy items.The overall tool reliability with internal consistency had alpha of 0.77.Further research on the safety of this tool is recommended.

View Article: PubMed Central - PubMed

Affiliation: Nursing and Midwifery Care Research Centre, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, IR Iran.

ABSTRACT

Background: Despite the importance of self-management in epileptics, no instrument has been developed or validated in Iran. Since self-management is a multi-dimensional construct, having a valid and reliable instrument for measuring this compound construct is crucial.

Objectives: This study aims to validate the Persian version of the self-management scale and provide a valid and reliable tool to measure self-management of patients with epilepsy.

Patients and methods: This is a methodological psychometric study. Construct , face and content validity was calculated on 200 samples after translation. Tool reliability was examined by using two methods: internal consistency and test-retest. Finally, the modified model was presented using exploratory factor analysis for the Iranian version of the tool.

Results: The validity of all items was above 0.63 and their content validity indexes (0.81-1) were appropriate. Construct validity, exploratory and confirmatory factor analysis confirmed all the dimensions except for some safety and pharmacotherapy items. The overall tool reliability with internal consistency had alpha of 0.77.

Conclusions: Persian version of the self-management scale for patients with epilepsy is valid and reliable to measure the dimensions of self-management in Iranian patients and it can be used to measure epileptics' self-management. Further research on the safety of this tool is recommended.

No MeSH data available.


Related in: MedlinePlus

Scree Plot in the Exploratory Factor Analysis
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fig1948: Scree Plot in the Exploratory Factor Analysis

Mentions: In order to categorize the questions of instrument, a two-phase strategy was used; in the first phase, questionnaire items formed its structures. In the next phase, each of the structures formed epilepsy self-management indices. In the first phase, the index of Kaiser-Meyer-Olkin (KMO) test varied from 0.52 to 0.73, and the percentage of variance (TVE) changed between 18.73 and 35.37. In addition, Bartlett's test result (P < 0.001) confirmed adequacy of exploratory factor analysis for all the constructs. Load factor higher than 3.0 (criterion for selecting items) was observed in all the structures, except for item 5 from medication management and items 1 and 2 from safety. These items were up for elimination. During the second phase, KMO test result was 0.793 and percentage of explained variance was 52.668. Furthermore, Bartlett's test result confirmed adequacy of exploratory factor analysis. Scree plot test results that determine the number of factors at this phase are shown in Figure 1. The steep curve indicates and confirms the existence of final five factors for structures of the questionnaire. In other words, the 5-fold constructs eventually defined an ultimate construct. In this phase, results of specialized load factors were respectively 0.843 (self-management of seizures) and 0.675 (medication self-management). This confirms constructs coefficients in determining the ultimate factor.


Psychometric properties of the persian version of self-management scale for a sample of Iranian patients with epilepsy.

Dehghan Nayeri N, Aliasgharpour M, Yadegari MA - Nurs Midwifery Stud (2013)

Scree Plot in the Exploratory Factor Analysis
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4228556&req=5

fig1948: Scree Plot in the Exploratory Factor Analysis
Mentions: In order to categorize the questions of instrument, a two-phase strategy was used; in the first phase, questionnaire items formed its structures. In the next phase, each of the structures formed epilepsy self-management indices. In the first phase, the index of Kaiser-Meyer-Olkin (KMO) test varied from 0.52 to 0.73, and the percentage of variance (TVE) changed between 18.73 and 35.37. In addition, Bartlett's test result (P < 0.001) confirmed adequacy of exploratory factor analysis for all the constructs. Load factor higher than 3.0 (criterion for selecting items) was observed in all the structures, except for item 5 from medication management and items 1 and 2 from safety. These items were up for elimination. During the second phase, KMO test result was 0.793 and percentage of explained variance was 52.668. Furthermore, Bartlett's test result confirmed adequacy of exploratory factor analysis. Scree plot test results that determine the number of factors at this phase are shown in Figure 1. The steep curve indicates and confirms the existence of final five factors for structures of the questionnaire. In other words, the 5-fold constructs eventually defined an ultimate construct. In this phase, results of specialized load factors were respectively 0.843 (self-management of seizures) and 0.675 (medication self-management). This confirms constructs coefficients in determining the ultimate factor.

Bottom Line: Construct validity, exploratory and confirmatory factor analysis confirmed all the dimensions except for some safety and pharmacotherapy items.The overall tool reliability with internal consistency had alpha of 0.77.Further research on the safety of this tool is recommended.

View Article: PubMed Central - PubMed

Affiliation: Nursing and Midwifery Care Research Centre, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, IR Iran.

ABSTRACT

Background: Despite the importance of self-management in epileptics, no instrument has been developed or validated in Iran. Since self-management is a multi-dimensional construct, having a valid and reliable instrument for measuring this compound construct is crucial.

Objectives: This study aims to validate the Persian version of the self-management scale and provide a valid and reliable tool to measure self-management of patients with epilepsy.

Patients and methods: This is a methodological psychometric study. Construct , face and content validity was calculated on 200 samples after translation. Tool reliability was examined by using two methods: internal consistency and test-retest. Finally, the modified model was presented using exploratory factor analysis for the Iranian version of the tool.

Results: The validity of all items was above 0.63 and their content validity indexes (0.81-1) were appropriate. Construct validity, exploratory and confirmatory factor analysis confirmed all the dimensions except for some safety and pharmacotherapy items. The overall tool reliability with internal consistency had alpha of 0.77.

Conclusions: Persian version of the self-management scale for patients with epilepsy is valid and reliable to measure the dimensions of self-management in Iranian patients and it can be used to measure epileptics' self-management. Further research on the safety of this tool is recommended.

No MeSH data available.


Related in: MedlinePlus