Disability in cluster headache is more than attack frequency - results from and validation of the English version of the Cluster Headache Impact Questionnaire (CHIQ).

BACKGROUND: Cluster headache (CH) is associated with high disability. The Cluster Headache Impact Questionnaire (CHIQ) is a short, disease-specific disability questionnaire first developed and validated in German. Here, we validated the English version of this questionnaire. METHODS: The CHIQ was assessed together with nonspecific headache-related disability questionnaires in CH patients from a tertiary headache center and an American self-help group. RESULTS: 155 active episodic and chronic CH patients were included. The CHIQ showed good internal consistency (Cronbach's α = 0.91) and test-retest reliability (ICC = 0.93, n = 44). Factor analysis identified a single factor. Convergent validity was shown by significant correlations with the Headache Impact Test™ (HIT-6™, ρ = 0.72, p < 0.001), the Hospital Anxiety and Depression Scale (HADS depression: ρ = 0.53, HADS anxiety: ρ = 0.61, both p < 0.001), the Perceived Stress Scale (PSS-10, ρ = 0.61, p < 0.001) and with CH attack frequency (ρ = 0.29, p < 0.001). Chronic CH patients showed the highest CHIQ scores (25.4 ± 7.9, n = 76), followed by active episodic CH and episodic CH patients in remission (active eCH: 22.2 ± 8.7, n = 79; eCH in remission: 14.1 ± 13.1, n = 127; p < 0.001). Furthermore, the CHIQ was graded into 5 levels from "no to low impact" to "extreme impact" based on the patients' perception. Higher CHIQ grading was associated with higher attack and acute medication frequency, HIT-6™, HADS and PSS scores. CONCLUSION: The English version of the CHIQ is a reliable, valid, and disease-specific patient-reported outcome measure to assess the impact of headaches on CH patients.

Measuring psychological distress using the 12-item general health questionnaire and the six-item Kessler psychological distress scale. Psychometric comparison and equipercentile equating of the two scales.

OBJECTIVES: This study aimed to examine if the General Health Questionnaire (GHQ)-12 and Kessler 6 (K6) assess the same underlying construct and to develop a score conversion table for the two scales. METHODS: A random sample of 4303 people who completed both the GHQ-12 and K6 in 2021 were analyzed. Exploratory bifactor analysis evaluated if both scales measured the same construct, and Rasch analysis assessed item severities. The scales were transformed using Equipercentile equivalence for comparability and score conversion. Agreement was estimated with Cohen's Kappa coefficient, along with raw positive and negative agreement. RESULTS: We found that the two scales measure the same phenomenon to the extent that they can be made equivalent. Conversion tables between GHQ-12 and K6 are presented. Applying the commonly used cut-off of ≥3 on the GHQ-12 bi-modal scoring, we found that the best corresponding cut-off on the K6 would be ≥8. The prevalence of psychological distress was then 22% with GHQ-12% and 21% with K6. CONCLUSIONS: The GHQ-12 and K6 measure the same construct and corresponding cut-off scores on one scale were found for the other scale. This is valuable for longitudinal studies or time series where one scale has replaced the other scale.

Urdu translation and cross-cultural validation of the stroke self-efficacy questionnaire.

BACKGROUND: The Stroke Self-Efficacy Questionnaire (SSEQ) measures the self-confidence of the individual in functional activities after a stroke. The SSEQ is a self-report scale with 13 items that assess self-efficacy after a stroke in several functional domains. OBJECTIVE: The purpose was to translate the Stroke Self-Efficacy Questionnaire into Urdu Language and to find out the validity and reliability of Urdu SSEQ among stroke patients. METHODS: The cross-cultural validation study design was used. Following COSMIN guidelines, forward and backward translation protocols were adopted. After pilot testing on 10 stroke patients, the final Urdu version was drafted. A sample of 110 stroke patients was used to evaluate the validity and reliability of the SSEQ-U. Content and Concurrent validity were determined. The intraclass correlation coefficient and Cronbach's alpha were used to measure internal consistency and test-retest reliability. Data analysis was performed using SPSS 25. RESULTS: The final version was drafted after application on 10 stroke patients. Content validity was analyzed by a content validity index ranging from 0.87 to 1. The internal consistency was calculated by Cronbach's alpha (α > 0.80). Test-retest reliability was determined by the Intra-class correlation coefficient (ICC2,1=0.956). Concurrent validity was determined by correlations with other scales by using the Spearman correlation coefficient; moderate to strong correlations (positive and negative) were found with the Functional Independence Measure (r = 0.76), Beck Depression Inventory (r=-0.54), Short Form of 12-item Scale (r = 0.68) and Fall Efficacy Scale (r = 0.82) with p < 0.05. CONCLUSION: The Urdu version was linguistically acceptable and accurate for stroke survivors for determining self-efficacy. It showed good content and concurrent validity, internal consistency and test-retest reliability.

Measuring electronic health literacy in the context of diabetes care: psychometric evaluation of a Persian version of the condition-specific eHealth literacy scale for diabetes.

BACKGROUND: The rise of the internet and social media has led to increased interest among diabetes patients in using technology for information gathering and disease management. However, adequate eHealth literacy is crucial for protecting patients from unreliable diabetes-related information online. OBJECTIVE: To examine the psychometric characteristics and explore the preliminary validity of the Persian version of the Condition-specific eHealth Literacy Scale for Diabetes (Persian CeHLS-D) to assess eHealth literacy in the context of diabetes care. METHODS: After adapting, translating, examining content validity, and pilot testing the questionnaire, it was administered to 300 patients with type 2 diabetes mellitus (T2DM). Construct validity was assessed through confirmatory factor analysis, convergent and known-groups validity. The internal consistency (Cronbach's alpha), composite reliability and maximum reliability, and test-retest correlation were assessed. RESULTS: Factor analysis supported the hypothesized two-factor model with 10 items, and the standardized factor loadings ranged from 0.44 to 0.86 (P-values < 0.001). Cronbach's alpha and test-retest correlation were good for each factor. Convergent validity was confirmed by significant correlations of Persian CeHLS-D with diabetes health literacy, perceived usefulness and importance of using the internet for health information, internet anxiety, and perceived physical and mental health. Know-groups validity determined using groups with different internet-use frequencies, and different attitudes towards providing online healthcare services, were satisfied. CONCLUSION: This study demonstrated the Persian CeHLS-D as a reliable and valid measure of eHealth literacy among patients with T2DM in Iran. Its satisfactory psychometric properties support its use in research and clinical settings to assess eHealth literacy and inform interventions.

The Revised Sexual Experiences Survey Victimization Version (SES-V): Conceptualization, Modifications, Items and Scoring.

The Sexual Experiences Survey [SES] is considered the gold standard measure of non-consensual sexual experiences. This article introduces a new victimization version [SES-V] developed by a multidisciplinary collaboration, the first revision since 2007. The 2024 SES-V is designed to measure the construct of sexual exploitation since the 14th birthday. Notable revisions are adoption of a freely given permission standard for non-consent, introduction of new tactics and acts, including made to perform or to penetrate another person's body, tactics-first wording order, and emphasis on gender and sexual orientation inclusivity. The SES-V is modularized to allow whole or partial administration. Modules include Non-contact, Technology-facilitated, Illegal (largely penetrative), and Verbally pressured sexual exploitation. Tables provide item text, multiple scoring approaches, module follow-up, specific incident description and demographics. Future plans include developing a scoring algorithm based on weighting our hypothesized dimensions of sexual exploitation severity: invasiveness, pressure, and norm violation combined with frequency. This article is the first in a special issue on the SES-V. Subsequent articles focus on the taxonomies and literature that informed each module. The issue concludes with two empirical papers demonstrating the feasibility and validity of the SES-V: (1) psychometric comparison with the 2007 SES-SFV; and (2) prevalence data from a census-matched adult community sample.

Nurses' evidence-based knowledge and self-efficacy in venous access device insertion and management: Development and validation of a questionnaire.

AIM: To develop and psychometrically test an instrument to assess nurses' evidence-based knowledge and self-efficacy regarding insertion and management of venous access devices (short peripheral catheter (SPC), long peripheral catheter/midline (LPC) and PICC) and the management of totally implantable central venous catheter (Port) in adult patients. DESIGN: Multicenter cross-sectional observational study with questionnaire development and psychometric testing (validity and reliability). METHODS: An evidence-based instrument was developed including a 34-item knowledge section and an 81-item self-efficacy section including four device-specific parts. Nineteen experts evaluated content validity. A pilot study was conducted with 86 nurses. Difficulty and discrimination indices were calculated for knowledge items. Confirmatory factor analyses tested the dimensionality of the self-efficacy section according to the development model. Construct validity was tested through known group validity. Reliability was evaluated through Cronbach's alpha coefficient for unidimensional scales and omega coefficients for multidimensional scales. RESULTS: Content validity indices and results from the pilot study were excellent with all the item-content validity indices >0.78 and scale-content validity index ranging from 0.96 to 0.99. The survey was completed by 425 nurses. Difficulty and discrimination indices for knowledge items were acceptable with most items (58.8%) showing desirable difficulty and most items (58.8%) with excellent (35.3%) or good (23.5%) discrimination power, and appropriate to the content. The dimensionality of the model posited for self-efficacy was confirmed with adequate fit indices (e.g., comparative fit index range 0.984-0.996, root mean square error of approximation range 0.054-0.073). Construct validity was determined and reliability was excellent with alpha values ranging from 0.843 to 0.946 and omega coefficients ranging from 0.833 to 0.933. Therefore, a valid and reliable tool based on updated guidelines is made available to evaluate nurses' competencies for venous access insertion and management.

Measurement of basic psychological needs for physical activity participation for college students with intellectual disabilities: A validation study.

BACKGROUND: Measurement instruments to understand self-determined motivation towards physical activity among college students with intellectual disabilities are needed to develop programs to support physical and psychological health and well-being. The purpose of the current study was to validate a modified questionnaire measuring basic psychological needs towards physical activity among college students with intellectual disabilities. METHODS: A total of 108 college students with intellectual disabilities completed the modified questionnaire. Validity and reliability of the questionnaire was examined. RESULTS: Confirmatory factor analysis demonstrated a six-factor model had good model fit. Cronbach's alpha values showed acceptable reliability evidence of the instrument as a whole, although some alpha values in subdomains of the instrument were below acceptable values. CONCLUSION: The modified questionnaire was found to have acceptable validity evidence. Further studies are needed with refinement of answer options and the addition of more questions to increase reliability.

Development of a scale examining post-disaster coping motivations in Turkey after the 6 February earthquake.

OBJECTIVES: The aim of this study was to develop the Motivations for Coping After Disaster Scale. To test the construct validity of the scale, a total of 676 data were collected from three different sampling groups (N1: 388; N2: 194; N3: 94). METHODS: Exploratory Factor Analysis, Confirmatory Factor Analysis (CFA) and Criterion validity analysis were conducted to test the construct validity of the scale. RESULTS: As a result of CFA, it was seen that the post-disaster scale had a five-dimensional structure (spiritual values, hope, friend support, solidarity, family support). The loadings of the items of the scale are at a good level. As a result of CFA, the scale was found to have acceptable and good fit indices (χ2/sd = 2.690; RMSEA (Root Mean Square Error of Approximation) = 0.066; SRMR (Standardized Root Mean Square Residual) = 0.047; CFI (Comparative Fit Index) = 0.948; GFI (Goodness of Fit Index) = 0.917). The results of the criterion validity analysis show that the scale has criterion validity. Cronbach Alpha internal consistency coefficient shows that the scale is highly reliable (Total = 0.923). CONCLUSIONS: The results of this study show that the Post-Disaster Coping Motivations Scale is a valid and reliable instrument. It is thought that the scale can make an important contribution to understanding psychological recovery processes after disaster and providing appropriate support to individuals.

Translation, cross-cultural adaptation, and psychometric validation of the Malay version of the Assessment of Quality of Life-6 Dimensions (Malay-AQoL-6D) instrument among Malaysians living with chronic heart failure.

BACKGROUND: This study aimed to translate and culturally adapt the Assessment of Quality of Life (AQoL)-6D into Malay (Malay-AQoL-6D), and assesses the instrument's acceptability, reliability, and validity among Malaysians living with chronic heart failure (HF). METHODS: The translation and cross-cultural adaptation process adhered to international guidelines. The Malay-AQoL-6D underwent content and face validity assessments via expert review, and pretesting among healthy individuals and patients with chronic conditions. Subsequent psychometric validation utilised clinico-sociodemographic data and paired AQoL-6D and EQ-5D-5L data from a health-related quality-of-life (HRQoL) survey involving Malay-speaking patients with HF, which encompassed assessments of Malay-AQoL-6D acceptability, internal consistency and test-retest reliability, as well as its construct, concurrent, convergent and divergent, and known-group validity. RESULTS: The Malay-AQoL-6D was deemed acceptable among clinicians and local patients, achieving a 90.8% completion rate among 314 patients surveyed. The instrument demonstrated strong content validity (item-level content validity index [CVI]: 0.83-1.00, average CVI: 0.98), internal consistency (Cronbach's alpha: 0.72-0.89; MacDonald's omega: 0.82-0.90, excluding the Senses dimension), and test-retest reliability (average intraclass correlation coefficients: 0.79-0.95). Confirmatory factor analysis confirmed the instrument's two-level, six-factor structure (Satorra-Bentler [SB]-scaled χ2(df: 164): 283.67, p-value < 0.001; root mean square error of approximation [RMSEA]: 0.051; comparative fix index [CFI]: 0.945, Tucker-Lewis index [TLI]: 0.937; standardised root mean-squared error [SRMR]: 0.058). The Malay-AQoL-6D's concurrent validity was evident through its good agreement with EQ-5D-5L. Multiple hypothesis tests further affirmed its construct and known-group validity. The Malay-AQoL-6D's psychometric properties remained consistent across different missing data techniques. CONCLUSION: The findings suggest that Malay-AQoL-6D could be a culturally acceptable, reliable, and valid HRQoL measure for quantifying HRQoL among the local HF population. Future studies are necessary to further validate the instrument against other measures and confirm the instrument's test-retest reliability and responsiveness, which are possible with the availability of the Malay-AQoL-6D.

TORONTO: A trial-oriented multidimensional psychometric testing algorithm.

Bayesian adaptive methods for sensory threshold determination were conceived originally to track a single threshold. When applied to the testing of vision, they do not exploit the spatial patterns that underlie thresholds at different locations in the visual field. Exploiting these patterns has been recognized as key to further improving visual field test efficiency. We present a new approach (TORONTO) that outperforms other existing methods in terms of speed and accuracy. TORONTO generalizes the QUEST/ZEST algorithm to estimate simultaneously multiple thresholds. After each trial, without waiting for a fully determined threshold, the trial-oriented approach updates not only the location currently tested but also all other locations based on patterns in a reference data set. Since the availability of reference data can be limited, techniques are developed to overcome this limitation. TORONTO was evaluated using computer-simulated visual field tests: In the reliable condition (false positive [FP] = false negative [FN] = 3%), the median termination and root mean square error (RMSE) of TORONTO was 153 trials and 2.0 dB, twice as fast with equal accuracy as ZEST. In the FP = FN = 15% condition, TORONTO terminated in 151 trials and was 2.2 times faster than ZEST with better RMSE (2.6 vs. 3.7 dB). In the FP = FN = 30% condition, TORONTO achieved 4.2 dB RMSE in 148 trials, while all other techniques had > 6.5 dB RMSE and terminated much slower. In conclusion, TORONTO is a fast and accurate algorithm for determining multiple thresholds under a wide range of reliability and subject conditions.

Psychometric adequacy of the persian adapted version of the tilburg frailty indicator (P-TFI).

BACKGROUND: Frailty is identified as the primary goal of preventing the various consequences. The present study aimed to assess validity and reliability of the Persian adapted version of the Tilburg frailty indicator (TFI) in Iran. METHOD: This cross-sectional study included three phases of translating the indicator to Persian, assessing the face and content validity, completing the P-TFI by older people, who helped assess the reliability and construct validity. For construct validity, convergent and divergent validity were used. It was expected that the TFI domain scores would show the highest correlations with their related measures of frailty (convergent construct validity) and the lowest correlations with measures of the other domains (divergent construct validity). The study population consisted of 400 older people, selected from six health care centers. RESULTS: The mean age of the participants was 69.05 ± 7.28 years and the majority of the participants were married woman with less than a high school education. The total mean score of TFI was 8.26 ± 1.80, and 42.75% was classified as frail. The test-retest reliability was 0.88 for the total scale, 0.80 for physical, 0.65 for psychological, and 0.81 for social domains. The mean score of frailty and its dimensions (physical, psychological, and social) varied from 4.35 ± 1.78, 1.81 ± 1.33, 1.69 ± 0.73, and 0.86 ± 0.61, respectively. The total score of the TFI was correlated with each alternative measure and the convergent validity was proved. Further, the kappa values ranging from 535 to 0.967 were significant and test- retest reliability for total, physical, psychological, and social dimension were 0.88, 080, 065, and 081, respectively. Further, the convergent or divergent validity is being discussed for clarity. CONCLUSION: The Persian version of the TFI is valid and easy scored tools among Iranian's older people.

Psychometric Properties of the Chinese Version of the Gratitude at Work Scale in Employed Nurses: A Cross-Sectional Study.

BACKGROUND: The Gratitude at Work Scale, originally developed by American scholars, has been widely administered to mental health professionals and human service workers to explore gratitude in the workplace. No Chinese-language instrument is currently available for assessing workplace gratitude. PURPOSES: The aims of this study were to (a) translate the original English version of the Gratitude at Work Scale into a traditional Chinese version (TC-GAWS), confirm its factor structure, and analyze its psychometric properties among newly employed nurses and (b) develop and evaluate the psychometric properties of the TC-GAWS short form. METHODS: A psychometric study using a cross-sectional web-based design was conducted in Taiwan. Three hundred twenty-two employed nurses completed a battery of self-administered online questionnaires that included a demographic datasheet, the Gratitude Questionnaire-Six-Item Form, the Connor-Davidson Resilience Scale-10, and the Thoughts of Quitting Scale. IBM SPSS 24.0 and AMOS 28.0 were used for data analysis, and Cronbach's alpha and Pearson's correlation were used to assess reliability and concurrent validity. Exploratory factor analysis and confirmatory factor analysis (CFA) were conducted. RESULTS: The internal consistency and stability of the TC-GAWS total scale were .88 and .91, respectively. The exploratory factor analysis showed a satisfactory Kaiser-Meyer-Olkin value of .88 and a Bartlett's test value of 654.01 ( p < .001), suggesting that 64.55% of the total variance was explained by the two-factor TC-GAWS. After item reduction, the CFA of the six remaining items of the TC-GAWS short form revealed adequate fit statistics for a two-factor structure and a second-order factor. Strong correlations were found between the 10-item and six-item TC-GAWS ( r > .94) in the two samples, suggesting good concurrent validity. The overall scores for the 10-item and six-item TC-GAWS had similar convergent validity, with moderate-to-strong correlations for the Gratitude Questionnaire-Six-Item Form ( r = .45 and .540), Connor-Davidson Resilience Scale-10 ( r = .49 and .51), and Thoughts of Quitting Scale ( r = -.57 and -.53). The CFA yielded a two-factor, six-item model that exhibited good fit with the latent constructs of χ 2 / df = 11.06/8 = 1.38, p = .198, comparative fit index = .996, goodness-of-fit index = .979, root mean square error of approximation = .045, root mean square residual = .030, and standardized root mean squared residual = .023. CONCLUSIONS/IMPLICATIONS FOR PRACTICE: Both the 10- and six-item TC-GAWS instruments demonstrated good reliability and validity in nurse participants. The TC-GAWS may be used to measure gratitude in nurses in the workplace. This instrument has the potential to facilitate a better understanding of gratitude in nurses, which may be applied to the improvement of nursing management, research, and education.

Psychometric properties for Persian version Demoralization Scale-24 (DS-24) in Iranian cancer patients.

BACKGROUND: This study focuses on the phenomenon of demoralization, a common experience among terminally ill patients, especially those diagnosed with cancer. The primary objective is to adapt and validate a practical assessment tool for demoralization, the Demoralization Scale-24 (DS-24), within the context of Iranian society. METHODS: In this cross-sectional study, we employed the DS-24 as the principal instrument, which had been exactly translated and evaluated for its psychometric properties in 160 Persian cancer patients. The assessment included exploratory factor analysis, confirmatory factor analysis (CFA), as well as evaluations of convergent validity and internal consistency or reliability. RESULTS: The CFA unveiled a five-factor model, consistent with the original structure of the DS-24. Moreover, statistically significant correlations were observed between the DS-24 and both the Beck Depression and MUNSH happiness scales. Cronbach's alpha indicated high internal consistency, with a value of .92 for the total score. CONCLUSION: In Iran, like in other countries, the demoralization questionnaire demonstrates significant validity and reliability. This ensures the timely diagnosis of demoralization in cancer patients and the prompt initiation of therapeutic interventions.

Validation of the Chinese version of the 'caring ability of family caregivers of patients with cancer scale (CAFCPCS)' in family caregivers of elderly patients with cancer: A study protocol.

AIM: This study aims to translate the English version of the 'caring ability of family caregivers of patients with cancer scale (CAFCPCS)' into Chinese and validate its psychometric properties in the family caregivers of elderly patients with cancer. DESIGN: A methodological study. METHODS: Based on the Brislin translation model, the original scale will be translated and back-translated, the Delphi expert consultation method will be adopted for cross-cultural adaptation, and the pilot will be carried out in 20-30 family caregivers of elderly patients with cancer. Then, a dual-centre prospective study will be conducted by recruiting 371-542 family caregivers of elderly patients with cancer to validate the psychometric properties of the Chinese version of CAFCPCS. RESULTS: The scale's content validity will be evaluated using the Delphi expert inquiry method, and the face validity will be evaluated using a pre-experiment. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) will be used to assess structural validity, while internal consistency reliability and split-half reliability will be used to assess reliability. PATIENT OR PUBLIC CONTRIBUTION: Public involvement is of great significance for this study. Participants will be used in a pre-test to give feedback on whether the contents of the clinical pilot version of CAFCPCS after expert consultation can reflect real problems and whether the sentences can be well understood. Based on their opinions, the research group will further refine the scale.

Contribution of the abbreviated CAVE-st questionnaire in Spanish: the attitudes toward childbirth experiences.

There are several factors that influence women's childbirth experience, and personal interactions with health professionals are of particular significance. The main objective of this study was to present the validation of an abbreviated form of an existing questionnaire on attitudes about childbirth in medical and nursing students. We used a sample of 512 perinatal medicine and nursing students who received the original 52-item CAVE-st questionnaire to obtain a shorter version with proper psychometric properties. We used Cronbach's alpha coefficient to evaluate the new version's internal consistency. The Kaiser- Meyer-Olkin test and the Barlett sphericity test were performed to assess the suitability of exploratory factor analysis (EFA). Subsequently, confirmatory factor analysis (CFA) was performed using structural equation models in a second sample of 139 medical students. We obtained a 15-item version with a Cronbach's alpha of 0.82. The EFA revealed a four-dimensional structure, similar to the full 52-item version. In the CFA the adjustment indexes showed good model fitness, RMSEA= 0.046 [CI 0.00-0.07]; CFI = 0.978. We can conclude that the 15-item version is a valid tool for evaluating the attitude of students toward childbirth, pointing out the matters that should be improved in their training to avoid obstetric trauma by the promotion of a positive experience in women during childbirth.

Adaptation and validation of the On Your Own Feet - Transition Experiences Scale evaluating transitions to adult services among adolescent mental health service users in Europe.

PURPOSE: Experiences of young people transitioning from Child and Adolescent Mental Health Services (CAMHS) to Adult Mental Health Services (AMHS) have mostly been investigated qualitatively. This study adapts and validates the On Your Own Feet - Transition Experiences Scale (OYOF-TES) in a sample of CAMHS users in Europe and describes young people's and parents' experiences with transition and end of care at CAMHS. METHODS: The OYOF-TES was adapted to a mental health setting and translated. An End Of Care (OYOF-EOC) version (self- and parent-report) was developed. A total of 457 young people and 383 parents completed an OYOF-TES or OYOF-EOC. Psychometric properties and descriptives are presented. RESULTS: The Cronbach's alphas of the OYOF-TES and OYOF-EOC parent/self-report ranged from 0.92 to 0.94. The two-factor structure was confirmed. The mean overall satisfaction reported by young people was 6.15 (0-10; SD=2.92) for transition and 7.14 (0-10; SD=2.37) for care ending. However, 26.7%-36.4% of young people were unsatisfied. DISCUSSION: The OYOF-TES and OYOF-EOC can be used reliably in mental healthcare settings to capture young people's and parents' transition experiences. The majority of young people and parents was satisfied with the process of transition and care ending, yet a third of young people had negative experiences.

A cross-national investigation of psychosis-like experiences in five European countries included in the E-CLECTIC study: Psychometric challenges in studying their measurement.

BACKGROUND: Psychotic-like experiences (PLEs) are subtle, subclinical perturbations of perceptions and thoughts and are common in the general population. Their characterisation and unidimensionality are still debated. METHODS: This study was conducted by the Electronic-halluCinations-Like Experiences Cross-culTural International Consortium (E-CLECTIC) and aimed at measuring the Community Assessment of Psychic Experiences (CAPE) factorial structure across five European countries (Belgium; Czech Republic, Germany; Greece, and Spain) and testing the adequacy of the unidimensional polytomous Rasch model of the tool via Partial Credit Model (PCM) of the CAPE to detect people with a high risk for developing psychosis. RESULTS: The sample included 1461 participants from the general population. The factorial analysis confirmed the best fit for the bifactor implementation of the three-factor model, including the positive, negative and depressive dimensions and a general factor. Moreover, the unidimensional polytomous Rasch analysis confirmed that CAPE responses reflected one underlying psychosis proneness. CONCLUSIONS: The study proved that the CAPE measures a single latent dimension of psychosis-proneness. The CAPE might help locate and estimate psychosis risk and can be used as a screening tool in primary care settings/education settings.

Improving dependability in science: A critique on the psychometric qualities of the HiTOP psychosis superspectrum.

We reevaluated HiTOP's existing factor analytic evidence-base for a Psychosis (P) superspectrum as encompassing two psychosis-relevant subfactors ("spectra")-Thought Disorder (TD) and Detachment (D). We found that their data did not support P as a superspectrum with TD and D subfactors. Instead, TD contained both positive and negative symptoms of psychosis and emerged at the subfactor level. D did not target negative symptoms but, largely, disorders unrelated to psychosis and should not be placed under P. Determining if P is truly a superspectrum with psychosis TD and D subfactors will require factor analyses whose items are symptom-based and span the full range of psychopathology. Secondly, HiTOP authors state that TD and D provide a "nearly 2-fold" improvement in reliability over schizophrenia diagnoses but, after aligning the comparative study methodologies, this 2-fold improvement disappears. Finally, HiTOP's use of the term thought disorder is inconsistent with the ICD-11 and psychosis literature, in which it refers to formal thought disorder. We recommend that HiTOP (a) refer to P as a subfactor with positive and negative symptoms of psychosis until research indicates otherwise, (b) regularly rely on formal systematic reviews, (c) use appropriate reliability comparisons, (d) deconflate D with negative symptoms, and (e) rename TD.

University Student Depression Inventory, Brazilian Version, Construct Assessment.

OBJECTIVES: to assess the University Student Depression Inventory, Brazilian version (USDI-BR), construct. METHODS: a methodological study carried out with a snowball probabilistic sample, consisting of 334 undergraduate and graduate students. Confirmatory factor analysis, reliability using McDonald's omega coefficient and Cronbach's alpha were performed. Principal component analysis was performed using the varimax rotation and oblimin rotation, using the Kaiser-Meyer-Olkin criteria, Bartlett's test of sphericity and scree plot. RESULTS: the USDI-BR presented an internal consistency of items of ω = 0.95 and remained with 30 items, with the addition of 1 factor (Death wish and social withdrawal), totaling 4 factors. CONCLUSIONS: the USDI-BR has evidence that points to its validity and also its internal consistency, deserving that new studies be carried out to expand the evidence of its psychometric properties.

Evidence of validity of the Risk Self-Medication Questionnaire focused on Health Literacy.

OBJECTIVES: to analyze the validity evidence of the internal structure of the Risk Self-Medication Questionnaire Focused on Health Literacy. METHODS: a psychometric study with 499 adults. The internal structure was assessed with exploratory and confirmatory factor analysis to prove the adjustment. Internal consistency was measured by composite reliability and McDonald's omega coefficient (ω). RESULTS: the parameters revealed a model of 35 items distributed across four factors, explaining 56% of the total variance, with factor loadings ranging from 0.31 to 0.85 and adequate communalities. Accuracy (0.79