title: Posttraumatic growth inventory: factor structure in Spanish-speaking people living with HIV.
abstract: This cross-sectional study analyzed the factorial structure of the Posttraumatic Growth Inventory (PTGI) in a sample of 304 Spanish-speaking HIV-positive adults. Participants completed the PTGI and a socio-demographic questionnaire. Exploratory factor analysis (EFA) was carried out through structural equations modeling, with a Varimax rotation. Factors with eigenvalues greater than 1 were extracted, and items with loadings higher than .5 on a factor and lower than .4 on the rest were retained. Two confirmatory factor analyses (CFA) were performed to test a hierarchical model and a bifactor model. Reliability analyses were conducted. EFA suggested a three-factor model keeping 11 of the original 21 items. The three factors that emerged were changes in philosophy of life, in the self and in interpersonal relationships. CFAs suggested that only the bifactor model fitted the data. The three factors as well as the global scale showed good reliability. The factor structure of PTGI's scores in our data is consistent with the three dimensions theorized by Tedeschi and Calhoun, which speaks in favor of the construct validity of this measure.
authors.affiliation: a Department of Biological and Health Psychology, Psychology Faculty , Universidad Autónoma de Madrid , Madrid , Spain.
authors.forename: Helena
authors.identifier: 0000-0001-8715-0842
authors.initials: H
authors.lastname: Garrido-Hernansaiz
authors.affiliation: b Department of Psychology, Health Sciences Faculty , Universidad Internacional Isabel I de Castilla , Burgos , Spain.
authors.forename: Rocío
authors.identifier: 0000-0001-8006-5012
authors.initials: R
authors.lastname: Rodríguez-Rey
authors.affiliation: a Department of Biological and Health Psychology, Psychology Faculty , Universidad Autónoma de Madrid , Madrid , Spain.
authors.forename: Jesús
authors.identifier: 0000-0001-6544-0224
authors.initials: J
authors.lastname: Alonso-Tapia
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D003430:Cross-Sectional Studies; D005163:Factor Analysis, Statistical; D005260:Female; D015658:HIV Infections / Q000208:ethnology / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010555:Personality Inventory / Q000592:standards*; D000067073:Psychological Trauma; D015203:Reproducibility of Results; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis*; D011795:Surveys and Questionnaires / Q000592:standards*
keywords: HIV; Posttraumatic growth inventory; Spanish; factor structure; structural validity