El análisis factorial exploratorio de los ítems: análisis guiado según los datos empíricos y el software.

Lloret, Susana; Ferreres, Adoración; Hernández, Ana; Tomás, Inés

doi:10.6018/analesps.33.2.270211

Cited by 139 publications

(112 citation statements)

References 31 publications

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“…We conducted a descriptive analysis for sample characteristics and items of the GPQ. With regard to validity analysis based on internal structure, we performed an Exploratory Factor Analysis (EFA) using the maximum likelihood (ML) method and oblique rotation following the recommended standards (Lloret et al, 2017). Previously, we analyzed whether our data fitted the conditions for linear factor analysis (Lloret et al, 2017) and we tested the floor and ceiling effects of each item (percentage of response above 95% in scores 1 and 6).…”

Section: Methodsmentioning

confidence: 99%

Goal Preferences, Affect, Activity Patterns and Health Outcomes in Women With Fibromyalgia

et al. 2019

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Some motivational models understand health behavior as a result of the interaction between goal preferences and mood. However, this perspective has not been explored in fibromyalgia. Furthermore, in chronic pain, it has only been explored with regard to negative affect. Thus, our aims were: (1) to develop a Spanish version of the Goal Pursuit Questionnaire (GPQ); (2) to explore the relationships between goal preferences and health outcomes, testing the moderator role of affect and the mediating role of chronic pain activity patterns. We conducted two cross-sectional studies. In Study 1, after a double translation/back-translation process, we interviewed 94 women attending the Fibromyalgia Unit of the Community of Valencia in order to identify the cultural feasibility and the content validity of the GPQ. Study 2 comprised 260 women. We explored the GPQ structure and performed path analyses to test conditional mediation relationships. Eight activities from the original GPQ were changed while maintaining the conceptual equivalence. Exploratory factor analysis showed two factors: 'Painavoidance goal' and 'Mood-management goal' (37 and 13% of explained variance, respectively). These factors refer to patients' preference for hedonic goals (pain avoidance or mood-management) over achievement goals. Robust RMSEA fit index of the final models ranged from 0.039 for pain to 0.000 for disability and fibromyalgia impact. Pain avoidance goals and negative affect influenced pain mediated by taskcontingent persistence. They also affected disability mediated by task and excessive persistence. Pain avoidance goals and positive affect influenced fibromyalgia impact mediated by activity avoidance. We also found a direct effect of negative and positive affect on health outcomes. Preference for pain avoidance goals was always related to pain, disability and fibromyalgia impact through activity patterns. Affect did not moderate these relationships and showed direct and indirect paths on health outcomes, mainly by increasing persistence and showing positive affect as an asset and not a risk factor. Intervention targets should include flexible reinforcement of achievement goals relative to pain avoidance goals and positive affect in order to promote task-persistence adaptive activity patterns and decreased activity avoidance.

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Section: Methodsmentioning

confidence: 99%

Goal Preferences, Affect, Activity Patterns and Health Outcomes in Women With Fibromyalgia

et al. 2019

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“…Factorial validity was examined with all participants except for healthy controls ( n = 305) using principal components analysis (PCA) with an oblique “Promax” rotation to identify the number of components and determine the factor structure. PCA was conducted using polychoric correlations due to the ordinal nature of the data (22–24). The Kaiser-Meyer-Olkin measure of sampling adequacy was used to determine adequacy of sample size, and Bartlett's test of sphericity was used to assess suitability of the data for PCA.…”

Section: Methodsmentioning

confidence: 99%

The General Symptom Questionnaire-30 (GSQ-30): A Brief Measure of Multi-System Symptom Burden in Lyme Disease

et al. 2019

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Introduction: The multi-system symptoms accompanying acute and post-treatment Lyme disease syndrome pose a challenge for time-limited assessment. The General Symptom Questionnaire (GSQ-30) was developed to fill the need for a brief patient-reported measure of multi-system symptom burden. In this study we assess the psychometric properties and sensitivity to change of the GSQ-30.Materials and Methods: 342 adult participants comprised 4 diagnostic groups: Lyme disease (post-treatment Lyme disease syndrome, n = 124; erythema migrans, n = 94); depression, n = 36; traumatic brain injury, n = 51; healthy, n = 37. Participants were recruited from clinical research facilities in Massachusetts, Maryland, and New York. Validation measures for the GSQ-30 included the Patient Health Questionnaire-4 for depression and anxiety, visual analog scales for fatigue and pain, the Sheehan Disability Scale for functional impairment, and one global health question. To assess sensitivity to change, 53 patients with erythema migrans completed the GSQ-30 before treatment and 6 months after 3 weeks of treatment with doxycycline.Results: The GSQ-30 demonstrated excellent internal consistency (Cronbach α = 0.95). The factor structure reflects four core domains: pain/fatigue, neuropsychiatric, neurologic, and viral-like symptoms. Symptom burden was significantly associated with depression (rs = 0.60), anxiety (rs = 0.55), pain (rs = 0.75), fatigue (rs = 0.77), functional impairment (rs = 0.79), and general health (rs = −0.58). The GSQ-30 detected significant change in symptom burden before and after antibiotic therapy; this change correlated with change in functional impairment. The GSQ-30 total score significantly differed for erythema migrans vs. three other groups (post-treatment Lyme disease syndrome, depression, healthy controls). The GSQ-30 total scores for traumatic brain injury and depression were not significantly different from post-treatment Lyme disease syndrome.Conclusions and Relevance: The GSQ-30 is a valid and reliable instrument to assess symptom burden among patients with acute and post-treatment Lyme disease syndrome and is sensitive in the detection of change after treatment among patients with erythema migrans. The GSQ-30 should prove useful in clinical and research settings to assess multi-system symptom burden and to monitor change over time. The GSQ-30 may also prove useful in future precision medicine studies as a clinical measure to correlate with disease-relevant biomarkers.

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“…En relación a la asimetría y curtosis, a excepción de algunos ítems, la mayoría se encuentra entre ± 2.00 (George & Mallery, 2016). Por último, se evidencia aceptables cargas factoriales (λ), los cuales fueron superior a 0.50 (Lloret, Ferreres, Hernández & Tomás, 2017 En cuanto al AFC de los modelos reportados por estudios psicométricos, se evidencia que todos los modelos (M1, M2, M3, M4 y M5) presentan adecuados índices de ajuste. Sin embargo, la correlación interfactorial del modelo de dos (ψ = 0.94), tres (ψpromedio = 0.94), cuatro (ψpromedio = 0.88) y cinco factores (ψpromedio = 0.77) fue alta, indicando la presencia de un factor general.…”

Section: Resultsunclassified

Body Shape Questionnaire (BSQ): Estructura factorial y fiabilidad en universitarios peruanos

Baños-Chaparro¹,

Marca

2020

avpsicol

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El análisis factorial exploratorio de los ítems: análisis guiado según los datos empíricos y el software.

Cited by 139 publications

References 31 publications

Goal Preferences, Affect, Activity Patterns and Health Outcomes in Women With Fibromyalgia

Goal Preferences, Affect, Activity Patterns and Health Outcomes in Women With Fibromyalgia

The General Symptom Questionnaire-30 (GSQ-30): A Brief Measure of Multi-System Symptom Burden in Lyme Disease

Body Shape Questionnaire (BSQ): Estructura factorial y fiabilidad en universitarios peruanos

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