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1.
Arch Sex Behav ; 53(3): 1197-1211, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38212437

ABSTRACT

Latinx gay, bisexual, and other men who have sex with men (LMSM) report lower pre-exposure prophylaxis (PrEP) use than their white, non-Latinx counterparts. We hypothesize that this disparity is partially attributable to social ecological factors that can be addressed via prevention interventions. In this retrospective study, we first examined data from 253 LMSM to determine whether theorized associations existed between acquisition of a PrEP prescription (uptake) in relation to several social ecological factors based on a conceptual framework of determinants of access to and uptake of PrEP for LMSM. We also explored relations between frequency of PrEP use (adherence) and social ecological factors with a subsample of 33 LMSM who had initiated PrEP 12 months prior to assessment. In this study, individual-level factors from this framework included age and socioeconomic status. Perceived access to medical care represented both individual- and community-level determinants of PrEP uptake and adherence. Interpersonal-level factors were social support and relationship status. Structural/cultural-level factors were sexual identity development status, the masculinity norm of heterosexual self-presentation, traditional Latinx masculine gender role beliefs of machismo and caballerismo, racial identity, and immigration status. Results indicated that older men and those who endorsed the synthesis/integration status of sexual identity development were more likely to acquire a PrEP prescription during their lifetime in comparison to peers. PrEP adherence was linked with being older, reporting higher socioeconomic status, reporting more appraisal social support, self-identifying as white-Latinx, being U.S.-born, and endorsing less sexual identity uncertainty and more heterosexual self-presentation. Results specify modifiable factors that may inform tailored, community-based prevention efforts to increase PrEP use and decrease existing HIV/AIDS disparities among LMSM.


Subject(s)
HIV Infections , Sexual and Gender Minorities , Humans , Male , Hispanic or Latino , HIV Infections/prevention & control , Homosexuality, Male , Retrospective Studies , White
3.
Hisp Health Care Int ; : 15404153231187394, 2023 Jul 16.
Article in English | MEDLINE | ID: mdl-37455338

ABSTRACT

The present longitudinal study examined changes in perceived access to health care among a recently immigrated cohort of Latina young adults who were assessed annually during their first 3 years in the United States. A parallel process growth model of perceived access to health care and neighborhood collective efficacy was examined, accounting for socioeconomic indicators and immigration status. Five hundred thirty Latina young adults (ages 18-23) participated at baseline assessment, and approximately 95% were retained over three annual assessment time points. Participants' mean level of perceived access to health care increased during their initial 3 years in the United States. Women who reported more of an increase in perceived access to health care tended to also indicate increased neighborhood collective efficacy relative to their peers during their first 3 years in the United States. Findings offer important information about the individual- and community-level factors that influence recently immigrated Latinas' health care access.

4.
Article in English | MEDLINE | ID: mdl-37326530

ABSTRACT

OBJECTIVE: Gay, bisexual, and other sexual minority men (SMM) face more barriers to accessing health care compared to other men. In comparison to other SMM populations, Latinx SMM (LSMM) report having less access to health care. The purpose of the present study is to elucidate how theorized environmental-societal-level (i.e., immigration status, education level, and income level), community-interpersonal-level (i.e., social support and neighborhood collective efficacy [NCE]), and social-cognitive-behavioral-level factors (i.e., age, heterosexual self-presentation [HSP], sexual identity commitment, sexual identity exploration [SIE], and ethnic identity commitment [EIC]) may relate with perceived access to health care (PATHC) in a sample of 478 LSMM. METHOD: We conducted a hierarchical regression analysis examining the hypothesized predictors of PATHC, as well as EIC as a moderator of the direct association between predictors and PATHC. We hypothesized that Latinx EIC would moderate relations between the aforementioned multilevel factors and PATHC. RESULTS: LSMM perceived greater access to care when indicating the following: higher education level, more NCE, more HSP, more SIE, and more EIC. Latinx EIC acted as a moderator of four predictors of PATHC, including education, NCE, HSP, and SIE. CONCLUSIONS: Findings inform outreach interventions of researchers and health care providers about psychosocial and cultural barriers and facilitators of health care access. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

5.
J Lat Psychol ; 10(3): 207-224, 2022 Aug.
Article in English | MEDLINE | ID: mdl-36189328

ABSTRACT

According to intersectionality theory, oppression predisposes individuals from disadvantaged groups to experience disparities in health. Such disparities are evident in the sexual health among college-aged Latina women living in the U.S., who tend to report significantly higher rates of sexually transmitted infections and unintended pregnancies than their White peers. Guided by intersectionality theory, the present study examined sexual risk behaviors (i.e., inconsistent condom use, number of sexual partners) in relation to ethnic identity development and reported experiences of discrimination and sexism among 450 Latina college students (ages 18-26 years old). Notably, results indicated that Latinas who reported relatively lower levels of ethnic identity commitment had, on average, approximately five more sexual partners when they had reported greater lifetime experiences of sexism. Findings highlight how sexist experiences contributed to an increased number of partners among Latinas reporting relatively lower levels of ethnic identity commitment, demonstrating that strong ethnic identity commitment was protective against risk in accordance with past research. Results indicate a continued need for sexual health interventions with Latina college students.


Según la teoría de la interseccionalidad, la opresión predispone a los individuos de grupos desfavorecidos para experimentar las disparidades en la salud. Tales disparidades son evidentes en la salud sexual entre las mujeres Latinas de edad universitaria que viven en los Estados Unidos, que tienden a reportar tasas significativamente más altas de las infecciones de transmisión sexual y los embarazos no deseados en comparación con sus compañeras Blancas. Guiado por la teoría de interseccionalidad, el presente estudio examinó los comportamientos de riesgo sexual (i.e., el uso inconsistente de condón, el número de parejas sexuales) en relación con el desarrollo de la identidad étnica y las experiencias reportadas de la discriminación y el sexismo entre 450 estudiantes universitarias Latinas (edades de 18­26 años). Notablemente, los resultados indicaron que las Latinas que reportaron niveles relativamente más bajos de compromiso de identidad étnica tenían, en promedio, aproximadamente cinco parejas sexuales más cuando habían reportado más experiencias de sexismo de por vida. Los hallazgos resaltan cómo las experiencias sexistas contribuyeron a un mayor número de parejas sexuales entre las Latinas que reportan niveles relativamente más bajos de compromiso de identidad étnica, demostrando que un fuerte compromiso de identidad étnica era protector contra el riesgo de acuerdo con investigaciones anteriores. Los resultados indican una necesidad continua para promover la salud sexual de las estudiantes universitarias Latinas.

6.
Int J Ment Health Addict ; 20(1): 553-568, 2022 Feb.
Article in English | MEDLINE | ID: mdl-35321450

ABSTRACT

Background: The present study examined the links between discrimination-based acculturative stress (DAS), depressive symptoms, and alcohol use among recently immigrated Latina young adults and explored potential within-group Latina ethnic differences. Methods: Structural equation modeling was used to assess these relations among 530 Latina young adults (age 18-23) who had immigrated to the U.S. within approximately 12 months prior to assessment. Results: Women reporting more DAS indicated more depressive symptoms and alcohol use than counterparts reporting less DAS. Women reporting more time in the U.S. experienced higher levels of DAS. Undocumented participants, and those who had lived in the U.S. for less time, reported more depressive symptoms than their peers. Discussion: Findings highlight the need for mental health clinicians to attend to their local sociopolitical climate context for discriminatory practices and integrate cultural factors in mental health and alcohol use interventions targeting Latina young adults who recently immigrated to the U.S.

7.
BMC Psychol ; 9(1): 94, 2021 Jun 07.
Article in English | MEDLINE | ID: mdl-34099063

ABSTRACT

OBJECTIVE: This study tested the efficacy of AFFIRM, a brief affirmative cognitive-behavioural group intervention tailored to reduce psychosocial distress and improve coping among sexual and gender minority adolescents and young adults (SGMY). METHOD: SGMY (n = 138; M age = 22.44) were allocated to immediate 8-week AFFIRM intervention delivered at 12 community-based organisations or an 8-week waitlisted control. At baseline, post-intervention or post-waitlist, participants completed self-reported assessments of depression, hope, coping, and stress appraisal. Implementation outcomes of feasibility and acceptability were also assessed. RESULTS: Compared to waitlist, SGMY in the intervention condition significantly reduced their depressive symptoms (b = - 5.79, p = .001) as well as increased reports of hope (agency: b = 0.84, p = .001; pathway: b = 0.79, p = .001), and coping by emotional support (b = 0.59, p < .001), instrumental support (b = 0.67, p < .001), positive framing (b = 0.59, p < .001), humour (b = 0.36, p = .014), planning (b = 0.49, p < .001) as well as reflective coping (b = 0.27, p = .009). Intervention participants were also less likely to perceive stress as a threat (b = - 0.43, p = .001), and more likely to perceive stress as challenge (b = 0.67, p < .001) and have the resources to deal with that stress (b = 0.38, p = .016) in comparison to waitlisted control participants. All outcomes had medium to large effect sizes. AFFIRM participants reported low attrition (8.5%) and high levels of engagement and acceptability (e.g. 99% agreed intervention was relevant to their lives). Over 63% of the community organizations that participated in the training hosted AFFIRM at least once during the study. CONCLUSIONS: Results demonstrate efficacy for the community-based implementation of an affirmative clinical intervention designed for SGMY to address depression and foster coping with universal and minority stressors.


Subject(s)
Cognitive Behavioral Therapy , Psychotherapy, Group , Sexual and Gender Minorities , Adolescent , Adult , Cognition , Humans , Ontario , Young Adult
8.
Article in English | MEDLINE | ID: mdl-33562876

ABSTRACT

Digital mental health interventions may enable access to care for LGBTQA+ youth and young adults that face significant threats to their wellbeing. This study describes the preliminary efficacy of AFFIRM Online, an eight-session manualised affirmative cognitive behavioural group intervention delivered synchronously. Participants (Mage = 21.17; SD = 4.52) had a range of sexual (e.g., queer, lesbian, pansexual) and gender (e.g., non-binary, transgender, cisgender woman) identities. Compared to a waitlist control (n = 50), AFFIRM Online participants (n = 46) experienced significantly reduced depression (b = -5.30, p = 0.005, d = 0.60) and improved appraisal of stress as a challenge (b = 0.51, p = 0.005, d = 0.60) and having the resources to meet those challenges (b = 0.27, p = 0.059, d = 0.39) as well active coping (b = 0.36, p = 0.012, d = 0.54), emotional support (b = 0.38, p = 0.017, d = 0.51), instrumental support (b = 0.58, p < 0.001, d = 0.77), positive framing (b = 0.34, p = 0.046, d = 0.42), and planning (b = 0.41, p = 0.024, d = 0.49). Participants reported high acceptability. This study highlights the potential of digital interventions to impact LGBTQA+ youth mental health and explores the feasibility of digital mental health to support access and engagement of youth with a range of identities and needs (e.g., pandemic, lack of transportation, rural locations). Findings have implications for the design and delivery of digital interventions for marginalised youth and young adults.


Subject(s)
Cognitive Behavioral Therapy , Sexual and Gender Minorities , Transgender Persons , Adolescent , Adult , Cognition , Female , Humans , Mental Health , Young Adult
9.
J Interpers Violence ; 36(7-8): 3755-3777, 2021 04.
Article in English | MEDLINE | ID: mdl-29806565

ABSTRACT

Marianismo is a Latino cultural value that describes both positive and negative aspects of traditional Latina femininity. Marianismo emphasizes culturally valued qualities such as interpersonal harmony, inner strength, self-sacrifice, and morality. Endorsement of marianismo is hypothesized to correlate with individual economic, educational, and personal variables. Marianismo also is theorized to potentially influence attitudes about, experiences of, and responses to intimate partner violence (IPV) among Latina women. The present study examined whether endorsement of marianismo beliefs mitigated or exacerbated psychological distress after experiences of IPV in a sample of 205 recently immigrated Latina women, aged 18 to 23 years. Latina women experiencing higher levels of IPV and endorsing greater marianismo beliefs were hypothesized to indicate greater psychological distress. Unexpectedly, women who endorsed more Subordinate to Others/Self-Silencing to Maintain Harmony marianismo beliefs indicated more psychological distress (p = .05), greater symptoms of psychological distress (p = .01), and greater average distress (p = .03) when they also reported less IPV than peers. Implications for understanding Latinas' responses to and reporting of IPV, as well as for culturally tailored counseling interventions for this underserved and understudied population, are discussed.


Subject(s)
Intimate Partner Violence , Psychological Distress , Attitude , Female , Hispanic or Latino , Humans , Young Adult
10.
Nanoscale Adv ; 2(12): 5874-5882, 2020 Dec 15.
Article in English | MEDLINE | ID: mdl-36133880

ABSTRACT

Flow reactors are expected to play an increasingly important role in the production of chemicals. A simple carbon-based scaffold to easily develop flow systems is here detailed. Using a chemical vapour deposition technique, the controlled in situ growth of vertically aligned (VA) multi-wall carbon nanotubes (MWCNTs) into quartz columns with 2 mm inner diameter is achieved. Several of the described MWCNT columns (CNCs) can be produced at a time. The influence of synthesis parameters on the formation of these VA-MWCNT scaffolds is reported and discussed (e.g. injection time of the precursor, carrier gas flow rate, inner diameter and length of the quartz column, position in the furnace during synthesis). Raman spectroscopy, optical microscopy, scanning and transmission electron microscopy are used to assess the coverage of the inner channel of the quartz column with VA-MWCNTs and their overall quality. The length of the CNCs together with the carrier gas flow rate are found to be key parameters to control the MWCNT length profile within the CNCs. Fluoresceinamine molecules and platinum nanoparticles are successfully immobilised within these MWCNT scaffolds. The benefits of the CNCs for flow system design are summarised as the controlled filling with MWCNTs makes the detailed CNCs versatile scaffolds for flow catalysis and filtration.

11.
Cultur Divers Ethnic Minor Psychol ; 26(1): 42-53, 2020 Jan.
Article in English | MEDLINE | ID: mdl-31021142

ABSTRACT

OBJECTIVE: Acculturation-acculturative stress profiles and their association with depression symptoms were examined in a sample of mainland Puerto Ricans (N = 367) using latent profile analysis. METHODS: Bidimensional behavioral acculturation, bidimensional ethnic identity, and acculturative stress were used as indicators to derive profiles. Differences in depressive symptoms across latent profile members were determined using an automatic mixture modeling with continuous outcomes approach. RESULTS: Three profiles were identified, each demonstrating a distinctive configuration of adherence to bidimensional behavioral acculturation, bidimensional ethnic identity, and level of acculturative stress. The largest profile resembled individuals following a partial marginalization strategy. Participants in this profile were also reported more depression symptoms than all other participants. CONCLUSIONS: The identification of a large partial marginalization profile offers important information about sociocultural indicators of depression among Puerto Ricans living in the United States. (PsycINFO Database Record (c) 2020 APA, all rights reserved).


Subject(s)
Acculturation , Depression/ethnology , Hispanic or Latino/psychology , Self Disclosure , Stress, Psychological/ethnology , Adult , Female , Humans , Longitudinal Studies , Male , Puerto Rico/ethnology , United States
12.
AIDS Care ; 32(2): 193-201, 2020 02.
Article in English | MEDLINE | ID: mdl-31104481

ABSTRACT

The rate of HIV infection for Latinx men who have sex with men (LMSM) increased by 20% from 2008 to 2014 even as rates stabilized among MSM of other racial and ethnic backgrounds. We hypothesize that this disparity is partially attributable to individual and structural factors associated with HIV testing, including substance use practices, among LMSM. In this retrospective study, we examined data from 502 LMSM to determine whether (a) hypothesized relationships exist between individual factors (perceived HIV susceptibility, experiences with HIV prevention, condom use, sex under the influence, sexual identity development status, heterosexual self-presentation, and traditional Latinx gender norms) and structural factors (access to healthcare resources and social support) and HIV testing for LMSM. We also tested whether (b) substance use practices moderate relations between individual and structural factors and HIV testing. Findings indicate that (a) relationships exist between several individual and structural factors and HIV testing and that (b) substance use moderated these relationships to HIV testing in a number of hypothesized ways. Practice and prevention implications are discussed.


Subject(s)
HIV Infections/diagnosis , HIV Infections/prevention & control , Health Knowledge, Attitudes, Practice , Health Services Accessibility/statistics & numerical data , Homosexuality, Male/ethnology , Mass Screening/statistics & numerical data , Substance-Related Disorders/complications , Unsafe Sex/psychology , Adult , Condoms/statistics & numerical data , HIV Infections/ethnology , Homosexuality, Male/psychology , Humans , Male , Mass Screening/methods , Retrospective Studies , Risk-Taking , Safe Sex , Serologic Tests , Sexual Behavior , Social Stigma , Social Support , Unsafe Sex/ethnology
13.
Subst Use Misuse ; 55(5): 796-805, 2020.
Article in English | MEDLINE | ID: mdl-31876218

ABSTRACT

Background: The present study proposed a moderated mediation model of relations among negative urgency, sensation seeking, alcohol use, self-esteem, and casual sexual behavior among college students. We hypothesized students' alcohol use would mediate a positive relation between two facets of impulsivity, negative urgency and sensation seeking, with casual sexual behavior. We also examined the influence of self-esteem on alcohol use and casual sexual behavior to determine if self-esteem may serve as a point of intervention. We hypothesized that self-esteem might moderate the relation between casual sexual behavior and alcohol use, such that students who report high alcohol use in addition to low self-esteem would engage in more casual sexual behavior than individuals who report relatively higher levels of self-esteem. Methods: Data were collected in 2015 from 413 undergraduate students at a large Northeastern public university. Structural equation modeling tested the moderated mediation model. Results: Contrary to hypotheses, the theorized model demonstrated an inadequate fit to the data when self-esteem was included. A second structural model was calculated to test alcohol use as a mediator of associations between negative urgency and sensation seeking, and casual sexual behavior. As hypothesized, students' alcohol use was found to be a mediator of the positive associations between negative urgency and casual sexual behavior and sensation seeking and casual sexual behavior. Conclusions: Findings suggest that alcohol use, negative urgency, and sensation seeking may serve as points of intervention to address casual sexual behavior, as appropriate, among college student populations.


Subject(s)
Alcohol Drinking , Self Concept , Sexual Behavior , Students , Humans , Impulsive Behavior , Sensation , Universities
14.
Psychol Men Masc ; 21(4): 699-703, 2020 Oct.
Article in English | MEDLINE | ID: mdl-38464395

ABSTRACT

Several challenges have emerged in ensuring uptake of preexposure prophylaxis (PrEP) for HIV prevention. By applying the health belief model, the present study assessed associations between novel psychosocial variables and PrEP use among gay and bisexual men. Logistic regression analyses indicated that heterosexual self-presentation, sexual risk, PrEP conspiracy beliefs, and perceived peer PrEP use were positively associated with PrEP use. Greater understanding of the psychosocial barriers to PrEP use for unique at-risk populations can facilitate the development of socially informed prevention strategies.

15.
Psychol Men Masc ; 20(2): 238-251, 2019 Apr.
Article in English | MEDLINE | ID: mdl-31592191

ABSTRACT

From 2010 to 2014, HIV diagnoses among Latino men who have sex with other men (LMSM) have increased by 14%, while diagnoses declined by 11% among white, non-Latino MSM. This health disparity is in part due to exposure to other LMSM with undiagnosed HIV infections. To effectively engage LMSM who are unaware of their serostatus, profiles of men differing in theorized determinants of HIV testing must be considered. In this retrospective study, we examined data from 546 LMSM to investigate whether hypothesized individual- (traditional masculine gender role conformity; sexual identity development status; alcohol and illicit drug use; sexual risk behaviors; perceived HIV susceptibility; and HIV stigma) and community-based (HIV prevention programming, access to health care, social support, neighborhood collective efficacy) factors were associated with differences in HIV testing. Latent profile analysis was used to identify profiles of men, and subsequent analyses examined whether profiles exhibited differential proportions of HIV testing. Four latent profiles were observed. One profile (50.3% tested) differed markedly from all other profiles (5.1 to 11% tested) in HIV testing. Characteristics of participants in this unique profile included reporting lower levels of heterosexual self-presentation, sexual identity uncertainty (and high levels of sexual identity commitment), condom use, HIV stigma, education, and perceived HIV susceptibility than all other profiles. Findings could improve HIV testing rates among LMSM by specifying ways in which public health advertisements/campaigns and community-based testing outreach efforts could be tailored to men most at-risk for transmitting HIV due to unknown serostatus.

16.
J Couns Psychol ; 66(6): 665-677, 2019 Nov.
Article in English | MEDLINE | ID: mdl-31219267

ABSTRACT

Acculturative stress is commonly experienced among Latinx immigrants in the United States who may feel pressured to maintain their heritage cultural norms and beliefs and/or adopt norms and beliefs of the dominant culture. The present study examined longitudinal relations between acculturative stress and endorsement of traditional Latina gender role beliefs (i.e., marianismo). We determined strength of the relations and temporal precedence of acculturative stress and endorsement of marianismo across 3 time points during participants' initial 3 years in the United States using a random intercept cross-lagged panel model. Participants were 530 Latina young adult women (ages 18-23) recruited from Miami-Dade County, Florida. Results suggested that acculturative stress levels at Time 1 positively predicted endorsement of the Family Pillar belief at Time 2, but acculturative stress levels at Time 2 negatively predicted the Virtuous and Chaste and Subordinate to Others beliefs at Time 3. In terms of marianismo beliefs predicting acculturative stress levels over time, the Virtuous and Chaste belief at Time 1 positively predicted acculturative stress at Time 2, and the Silencing Self to Maintain Harmony belief at Time 2 positively predicted acculturative stress at Time 3. Findings suggest that the Family Pillar belief, or feeling responsibility for the family's unity, may be protective against acculturative stress over time. Endorsing certain gender role beliefs (i.e., Virtuous and Chaste, Subordinate to Others) may lead to greater acculturative stress, and Latina young adult women experiencing acculturative stress may alter their endorsement of marianismo beliefs in an attempt to resolve culturally conflicting stress experienced after immigration. (PsycINFO Database Record (c) 2019 APA, all rights reserved).


Subject(s)
Acculturation , Emigrants and Immigrants , Gender Identity , Hispanic or Latino , Stress, Psychological/ethnology , Adolescent , Emigrants and Immigrants/psychology , Female , Healthcare Disparities/ethnology , Hispanic or Latino/psychology , Humans , Longitudinal Studies , Social Behavior , Stress, Psychological/psychology , United States/ethnology , Young Adult
17.
Psychotherapy (Chic) ; 56(2): 229-240, 2019 06.
Article in English | MEDLINE | ID: mdl-30714759

ABSTRACT

In this study, we tested a conceptual model through which lesbian, gay, bisexual, and queer (LGBQ) clients' perceptions of their therapists' affirmative practices and the therapeutic relationship (i.e., working alliance and the real relationship) would correlate with psychological well-being. We hypothesized that the therapeutic relationship would mediate the relation between clients' perceptions of their therapists' affirmative practices and psychological well-being while controlling for precounseling distress, client age, client race/ethnicity, number of psychotherapy sessions, and therapist gender. A nationwide sample of 184 LGBQ individuals was recruited through the Internet. Participants ranged in age from 18 to 64 years old (Mage = 27.57; SD = 8.50), and the majority identified as female (65.8%) and White (77.2%). Structural equation modeling showed that participants' perceptions of their therapists' affirmative practices were associated with psychological well-being (ß = .21, p < .01). Findings also indicated that the therapeutic relationship mediated the association between clients' perceptions of therapists' affirmative practices and psychological well-being (ß = .34, p < .001, 95% confidence interval [.15, .52]). More specifically, practicing affirmatively was correlated with a stronger therapeutic relationship, which was associated with higher levels of psychological well-being for LGBQ clients. Hence, these findings inform and encourage advancements in LGBQ affirmative psychotherapy research, practice, and training. (PsycINFO Database Record (c) 2019 APA, all rights reserved).


Subject(s)
Attitude of Health Personnel , Mental Disorders/psychology , Mental Disorders/therapy , Professional-Patient Relations , Psychotherapy/methods , Sexual and Gender Minorities/psychology , Adolescent , Adult , Female , Humans , Male , Middle Aged , Sexual and Gender Minorities/statistics & numerical data , Young Adult
18.
ACS Appl Mater Interfaces ; 11(7): 6724-6740, 2019 Feb 20.
Article in English | MEDLINE | ID: mdl-30688055

ABSTRACT

Extraordinarily small (2.4 nm) cobalt ferrite nanoparticles (ESCIoNs) were synthesized by a one-pot thermal decomposition approach to study their potential as magnetic resonance imaging (MRI) contrast agents. Fine size control was achieved using oleylamine alone, and annular dark-field scanning transmission electron microscopy revealed highly crystalline cubic spinel particles with atomic resolution. Ligand exchange with dimercaptosuccinic acid rendered the particles stable in physiological conditions with a hydrodynamic diameter of 12 nm. The particles displayed superparamagnetic properties and a low r2/ r1 ratio suitable for a T1 contrast agent. The particles were functionalized with bile acid, which improved biocompatibility by significant reduction of reactive oxygen species generation and is a first step toward liver-targeted T1 MRI. Our study demonstrates the potential of ESCIoNs as T1 MRI contrast agents.

19.
Addict Behav ; 91: 216-221, 2019 04.
Article in English | MEDLINE | ID: mdl-30473247

ABSTRACT

Electronic cigarette (e-cigarette) use among adolescents has rapidly increased in recent years, especially among Latinx and non-Latinx Black adolescents. Yet, limited research exists on adolescent attitudes that may contribute to the popularity of these products. This is in part due to the lack of measures focused on assessing adolescent attitudes towards e-cigarette use. The aim of this study was to develop a measure of adolescent e-cigarette use attitudes. The sample consisted mainly of Latinx and non-Latinx Black adolescents. Data were collected from 247 youth (M age = 16.0, SD = 1.2), 63.6% were girls, a majority (69.2%) were non-Latinx Black, and 27.1% were Latinx. The Electronic Cigarette Attitudes Survey (ECAS) is comprised of 12 items reflecting attitudes associated with e-cigarettes, which were derived from prior theoretical, quantitative, and qualitative work with e-cigarette users. To determine the factor structure, a parallel analysis scree plot and an exploratory factor analysis (EFA) of the ECAS was conducted using half of the sample chosen at random (n = 113). Results supported a one-factor solution. A confirmatory factory analysis (CFA) was conducted on the other randomly chosen half of participants (n = 121). Results confirm a one-factor solution. No significant differences were found on ECAS scores based on race/ethnicity or e-cigarette use status (lifetime e-cigarette use vs. no use). The ECAS represents a viable measure for assessing e-cigarette attitudes among youth.


Subject(s)
Attitude to Health , Black or African American , Electronic Nicotine Delivery Systems , Hispanic or Latino , Vaping , Adolescent , Attitude , Cigarette Smoking , Factor Analysis, Statistical , Female , Humans , Male , Reproducibility of Results , Surveys and Questionnaires , White People
20.
J Evid Inf Soc Work ; 15(4): 403-419, 2018.
Article in English | MEDLINE | ID: mdl-29775174

ABSTRACT

PURPOSES: This study extends previous findings on a measure of competencies based on Standards for Social Work Practice with Groups. The Inventory of Competencies in Social Work with Groups (ICSWG) measures confidence in performing the Standards. This study examines the latent structure of the Inventory, while illuminating the underlying structure of the Standards. METHODS: A multinational sample of 586 persons completed the ICSWG. Exploratory factor analysis (EFA), reliability estimates, standard error of measurement estimates, and a range of validity tests were conducted. RESULTS: The EFA yielded a six-factor solution consisting of core values, mutuality/connectivity, collaboration, and three phases of group development (planning, beginnings/middles, endings). The alphas were .98 for the scale and ranged from .85 to .95 for the subscales. Correlations between the subscales and validators supported evidence of construct validity. DISCUSSION: The findings suggest key group work domains that should be taught and practiced in social work with groups.


Subject(s)
Professional Competence/standards , Social Work/standards , Factor Analysis, Statistical , Female , Humans , Male , Psychometrics , Reproducibility of Results , Self Concept
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