Travezaño Cabrera, Aaron Italo

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Travezaño Cabrera, Aaron Italo
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  • Publicación
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    Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru
    (2022-06-22)
    Jaime Mendo  
    ;
    Tania Mendo
    ;
    Patricia Gil‐Kodaka
    ;
    Jimmy Martina
    ;
    Iván Gómez
    This study analyses the bycatch composition of an artisanal shrimp trawl fleet operating between Cabo Blanco and Máncora in Northern Peru between April 2019 and March 2020. A total of 300 hauls were analysed with respect to target catch and bycatch (consisting of other commercial species, discards, and macroalgae). A total of 277 species were recorded including 111 species of fish, 65 species of molluscs, 51 species of crustaceans, 22 species of algae, 12 species of cnidarian, 9 species of echinoderms, 4 species of Bryozoa and 3 species of polychaeta. Capture per unit effort (CPUE, kg.h-1) was highest for fish, followed by crustaceans, algae and molluscs. The target species Penaeus californiensis coffee shrimp constituted 17.8% of the overall catch,82.2% represented bycatch, and 50.6% represented discards. Coffee shrimps were more abundant in June and November 2019 and in January and February 2020. Highest bycatch CPUE occurred in May, June and December 2019. The most abundant species in the bycatch throughout the study period were sand perch (Diplectrum conceptione, 16% weight of the total catch), the macroalgae caulerpa (Caulerpa filiformis, 13%), sole flounder (Etropus ectenes, 6.4%), Pacific drum (Larimus pacificus, 5.7%), and lumptail searobin (Prionotus stephanophrys, 5.1%). Overall, the contribution of sand perch and flounder, exceeded the weight of coffee shrimp, therefore the interpretation that shrimp is the sole target species needs to be revised. The number of discarded species per month increased towards the spring months with the highest value in November. This study represents the first characterisation of bycatch in the artisanal trawling fishery in the Piura region in northern Peru and reveals a high proportion of bycatch in the fishery but also hints at potential temporal management measures that could be imposed to reduce the levels of bycatch. For example, the months of May and December had the greatest bycatch to shrimp ratios and the fishery could potentially be closed to avoid high bycatch risk, however, longer term information is needed to assess if the trends observed in bycatch are similar over longer periods of time. The species characterisation of bycatch also provides information for the design of modified nets which would target the reduction of small fish present in the catch.
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    Psychometric network analysis of the Patient Health Questionnaire-4 (PHQ-4) in Paraguayan general population
    (2024-04-15)
    Caycho-Rodríguez, Tomás
    ;
    Travezaño Cabrera, Aaron Italo  
    ;
    Torales, Julio
    ;
    Barrios, Iván
    ;
    Vilca Quiro, Lindsey Wildman  
    BACKGROUND: Depression and anxiety are two of the most prevalent and disabling mental disorders worldwide, both in the general population and in outpatient clinical settings. OBJECTIVE: This study aimed to analyze the psychometric properties of the Patient Health Questionnaire-4 (PHQ-4) based on network analysis metrics. METHODS: A total of 911 Paraguayans (23.71% women and 76.29% men; mean age 31.25 years, SD = 10.63), selected by non-probabilistic convenience sampling, participated in the study. Network analysis was used to evaluate the internal structure, reliability, and measurement invariance between men and women. RESULTS: The results revealed that the PHQ-4 is a unidimensional measure through Exploratory Graph Analysis (EGA). Reliability, through structural consistency, identified that 100% of the time, only a single dimension was obtained, and all items remained stable, as they were always replicated within the empirical dimension. The unidimensional structure has shown evidence of configural invariance; therefore, the network structure functioned equally among the different sex groups. CONCLUSION: The PHQ-4 presented optimal preliminary evidence of validity based on its internal structure, reliability, and invariance between sexes. Therefore, it may be useful as an accurate and brief measure of anxiety and depressive symptoms in the Paraguayan context.
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    New psychometric evidence from the Revised Mental Health Inventory (R-MHI-5) in Peruvian adolescents from a network psychometrics approach
    (2024-01-29)
    Rojas-Mendoza, Estefany
    ;
    Alania-Marin, Vaneryn
    ;
    Travezaño Cabrera, Aaron Italo  
    BACKGROUND: Mental health is an aspect that has been relegated in recent years, prioritizing physical health care. However, there are more and more mental problems and disorders worldwide. In this context, adolescents are considered at risk for developing psychological difficulties due to the important transition stage they are going through. Given this, an adequate measurement of mental health in the adolescent population is necessary. This research aims to evaluate the internal structure and estimate the reliability of the R-MHI-5. METHOD: The sample covered 662 adolescents (55.2% men and 44.7% women) aged 12 to 17 years (M = 14.5; SD = 1.6). RESULTS: Exploratory graph analysis revealed a two-dimensional structure encompassing well-being and psychological distress. Furthermore, confirmatory factor analysis results indicated that a model with two related factors demonstrated superior fit indices (CFI = 0.99; TLI = 0.99; SRMR = 0.04; RMSEA = 0.101) in comparison to a one-dimensional model (CFI = 0.85; TLI = 0.71; SRMR = 0.23; RMSEA = 0.451). Additionally, adequate values were found in the reliability of the dimensions. CONCLUSION: It is concluded that the R-MHI-5 is an instrument with robust psychometric evidence from the perspective of the EGA and CFA, providing adequate evidence of reliability and validity so that it can be used effectively in future research and prevention and intervention processes. Furthermore, our study is the first to provide psychometric evidence of the scale from a media approach in Peruvian adolescents.
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    Psychometric evaluation of the Adherence to Refills and Medications Scale (ARMS) in Peruvian hypertensive patients
    (2025-11-20)
    Travezaño Cabrera, Aaron Italo  
    The study aimed to determine the psychometric properties of the ARMS in patients with arterial hypertension from health centers in East Lima. This instrumental research included 367 participants (48.77% men and 51.23% women) aged 35–80 years ( M = 64.11; SD = 9.49). This study evaluated content validity, internal structure validity using confirmatory factor analysis, measurement invariance by sex, and reliability. The results demonstrated adequate content validity and a unidimensional structure with good model fit (CFI = 0.979; TLI = 0.973; SRMR = 0.064; RMSEA = 0.105). Additionally, measurement invariance by sex and age was established, and the instrument demonstrated satisfactory reliability (ω = 0.92). In conclusion, the ARMS showed robust psychometric properties in patients with arterial hypertension from health centers in East Lima.
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    Grief and Posttraumatic Growth in Individuals Who Have Experienced the Death of a Loved One From Six Latin American Countries: The Moderating Role of Gender and Age
    (2025-04-10)
    Caycho‐Rodríguez, Tomás
    ;
    Sánchez‐Villena, Andy Rick
    ;
    Baños-Chaparro, Jonatan
    ;
    Ventura‐León, José
    ;
    Vilca Quiro, Lindsey Wildman  
    This study assessed the relationship between grief and posttraumatic growth (PTG) in 2415 individuals from six Latin American countries, and how the relationship between these variables is moderated by gender and age. The Posttraumatic Growth Inventory-Short Form and Pandemic Grief Scale were used. Moderation analysis utilized Model 2, proposed by Hayes. The findings from the analysis indicate that the proposed regression model is statistically significant in most countries. Gender moderated the relationship between grief and PTG in El Salvador and Peru; meanwhile, age moderated this relationship in Uruguay. The findings support the importance of incorporating gender and age differences into both the theory of grief and PTG and empirical studies investigating these variables in Latin America. Furthermore, mental health professionals should consider gender and age differences when planning interventions aimed at fostering PTG in individuals who have experienced the loss of a loved one in the evaluated countries.
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    Risk of Addiction to Social Networks Scale--Short Version
    (2025-01-01)
    Vilca, Lindsey W.
    ;
    Aranda-Turpo, Jessica
    ;
    Dávila-Valencia, Carla
    ;
    Lupaca-Huarac, Emily
    ;
    Travezaño Cabrera, Aaron Italo  
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  • Publicación
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    New Psychometric Evidence of the Grief Impairment Scale (GIS) in People Who Have Experienced the Death of a Loved One From a Network Psychometric Approach in Two Latin American Countries
    (2024-05-31)
    Caycho‐Rodríguez, Tomás
    ;
    Travezaño Cabrera, Aaron Italo  
    ;
    Ventura‐León, José
    ;
    Vilca Quiro, Lindsey Wildman  
    ;
    Baños-Chaparro, Jonatan
    This study aimed to evaluate the psychometric properties of the Grief Impairment Scale (GIS) using a network psychometric model. A total of 1048 individuals from Peru and El Salvador participated. A network psychometric model was used to determine internal structure, reliability, and cross-country invariance. The results indicate that the GIS items were grouped into a single network structure through Exploratory Graph Analysis. Reliability was estimated by structural consistency, and it was found that when replicating the network structure within an empirical dimension, a single network structure was consistently obtained, and all items remained stable. Furthermore, the network structure was invariant, thus functioning similarly across the different country groups. In conclusion, the GIS presented solid psychometric evidence of validity based on its internal structure, reliability, and cross-country invariance. Therefore, the GIS is a psychometrically sound measure of functional impairment symptoms due to grief for Peruvian and Salvadoran individuals.
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    Psychometric properties of the Drug Abuse Screening Test (DAST) in a clinical sample using a network analysis approach
    (2026-02-26)
    Vilca Chambi, Danyelo R.
    ;
    Llano Sampedro, Jeremy A.
    ;
    Neira Suaña, Mérida E.
    ;
    Travezaño Cabrera, Aaron Italo  
    Global drug use has increased substantially in recent years, accompanied by a rise in substance use disorders and related mental and behavioral conditions. Although the Drug Abuse Screening Test (DAST-10) has shown adequate psychometric properties in various countries, no validated version is currently available for the Peruvian clinical context, highlighting the need for robust psychometric tools to assess substance abuse. Therefore, this study aimed to evaluate the psychometric properties of the DAST-10 within the Peruvian context through a network psychometric approach. The sample included 212 service users at addiction rehabilitation centers (159 men and 53 women; mean age = 29.1 years, SD = 9.5), selected by non-probabilistic convenience sampling. Network analysis was used to evaluate the internal structure and reliability of the instrument. The Exploratory Graph Analysis showed that 5 items (1, 2, 6, 8, 9) presented a one-dimensional measure. Reliability, assessed by structural consistency, identified that one dimension was obtained 100% of the time, and items remained stable by consistently replicating within the empirical dimension. This study provides the first psychometric evidence of the DAST-10 in Peru using a network analysis approach, yielding a refined five-item version (DAST-5) with a stable one-dimensional structure, strong reliability, and alignment with DSM-5-TR criteria, highlighting its clinical relevance.
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