RESUMEN
BACKGROUND: The E.U.'s lack of racially disaggregated data impedes the formulation of effective interventions, and crises such as Covid-19 may continue to impact minorities more severely. Our predictive model offers insight into the disparate ways in which Covid-19 has likely impacted E.U. minorities and allows for the inference of differences in Covid-19 infection and death rates between E.U. minority and non-minority populations. METHODS: Data covering Covid-19, social determinants of health and minority status were included from 1 March 2020 to 28 February 2021. A systematic comparison of US and E.U. states enabled the projection of Covid-19 infection and death rates for minorities and non-minorities in E.U. states. RESULTS: The model predicted Covid-19 infection rates with 95-100% accuracy for 23 out of 28 E.U. states. Projections for Covid-19 infection and mortality rates among E.U. minority groups illustrate parallel trends to US rates. CONCLUSIONS: Disparities in Covid-19 infection and death rates by minority status likely exist in patterns similar to those observed in US data. Policy Implications: Collecting data by race/ethnicity in the E.U. would help document health disparities and craft more targeted health interventions and mitigation strategies.
Asunto(s)
COVID-19 , Etnicidad , Unión Europea , Humanos , Negro o Afroamericano , COVID-19/epidemiología , COVID-19/etnología , COVID-19/mortalidad , Etnicidad/estadística & datos numéricos , Disparidades en el Estado de Salud , Grupos Minoritarios/estadística & datos numéricos , Estados Unidos/epidemiología , Unión Europea/estadística & datos numéricosRESUMEN
PURPOSE: We examine the use of transvaginal sonography in imaging ovarian follicles among non-pregnant reproductive-aged women enrolled in a contraceptive clinical trial. METHODS: Ten sites conducted a clinical trial comparing three oral ulipristal acetate regimens for ovulation inhibition. Enrollees underwent twice weekly transvaginal sonography and hormonal blood testing throughout treatment and until the second menses post-treatment. The primary outcome of the present analysis was success in identifying follicles ≥10 mm in a subgroup of sonograms performed at times of likely follicular activity (estradiol <100 pg/ml and progesterone >3 ng/ml). Secondarily, an overall analysis assessed all sonograms regardless of timing. RESULTS: At times of likely follicular activity, 135 women underwent 969 sonograms. The proportion of sonograms without follicles ≥10 mm ranged from 8.3% to 46.3% when stratified by site (p = .01). The odds of no follicle among higher-body mass index (BMI) women were 1.91 times those among lower-BMI women after controlling for site and treatment arm (95% CI: 1.13, 3.22). Results were similar for the overall population. CONCLUSION: Sonographers were less likely to identify follicles for higher-BMI women and results varied by site. Machine quality slightly impacted sonogram results, but did not sufficiently explain site differences.
Asunto(s)
Anticonceptivos , Ovulación , Femenino , Humanos , Adulto , Folículo Ovárico/diagnóstico por imagen , Folículo Ovárico/fisiología , ProgesteronaRESUMEN
Due to its increasing prevalence, Type 2 diabetes mellitus (T2DM) represents a major health challenge for modern society. Despite it being of fundamental interest, only a few MRI studies have conducted statistical analyses to draw scientifically valid conclusions about the complex interplay of T2DM and its associated clinical, structural, functional, metabolite, as well as cognitive distortions. Therefore, a systematic review of 68 manuscripts, following the PRISMA guidelines, was conducted. Notably, although the associations between imaging, clinical, and cognitive variables are not fully homogeneous, findings show a clear trend towards a link between altered brain structure and a decline in cognitive processing ability. The results of the review highlight the heterogeneity of the methods used across manuscripts in terms of assessed clinical variables, imaging, and data analysis methods. This is particularly significant as, if the subjects' criteria are not carefully considered, results are easily prone to confounding factors.
Asunto(s)
Encefalopatías , Disfunción Cognitiva , Diabetes Mellitus Tipo 2 , Imagen por Resonancia Magnética , Neuroimagen , Encefalopatías/diagnóstico por imagen , Encefalopatías/etiología , Encefalopatías/patología , Encefalopatías/fisiopatología , Disfunción Cognitiva/diagnóstico por imagen , Disfunción Cognitiva/etiología , Disfunción Cognitiva/patología , Disfunción Cognitiva/fisiopatología , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/diagnóstico por imagen , Diabetes Mellitus Tipo 2/patología , Diabetes Mellitus Tipo 2/fisiopatología , HumanosRESUMEN
OBJECTIVES: Vulvodynia is common and characterized by vulvar discomfort and pain. However, few studies have assessed hygienic practices in relation to onset. We investigated whether hygienic behaviors were associated with the onset of vulvodynia. MATERIALS AND METHODS: We assessed a self-reported history of personal hygienic behaviors, including wearing tight-fitting clothing, vulva care and genital washing, pubic hair removal, douching, and powdering, a year before first reported onset of vulvar pain among 213 clinically confirmed cases and a similar time period among 221 general population controls. RESULTS: Compared with women who reported never wearing tight-fitting jeans or pants, women wearing tight-fitting jeans or pants 4 or more times per week had twice the odds of vulvodynia (95% CI = 1.14-3.95). Relative to controls, women with vulvodynia were substantially less likely to report use of soaps and gels to cleanse the vulva (95% CI = 0.17-0.63). Among women who chose to remove pubic hair, those who removed pubic hair from the mons pubis compared with bikini-area only hair removal, were 74% more likely to have vulvodynia (95% CI = 1.05-2.89). Finally, compared with women who reported bikini-area only hair removal less than monthly, those who removed hair from the mons pubis weekly or more were nearly 2 times more likely to be vulvodynia cases (95% CI = 0.83-3.49). CONCLUSIONS: Wearing tight-fitting jeans or pants and removing hair from the mons pubis area were associated with increased odds of vulvodynia. Research on how hygienic practices could influence vulvar pain in larger and more temporally addressed populations is warranted.
Asunto(s)
Conducta , Higiene , Vulvodinia/epidemiología , Adolescente , Adulto , Femenino , Humanos , Encuestas y Cuestionarios , Adulto JovenRESUMEN
Despite the relationship between brain structure and function being of fundamental interest in cognitive neuroscience, the relationship between the brain's white matter, measured using fractional anisotropy (FA), and the functional magnetic resonance imaging (fMRI) blood oxygen level dependent (BOLD) response is poorly understood. A systematic review of literature investigating the association between FA and fMRI BOLD response was conducted following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. The PubMed and Web of Knowledge databases were searched up until 22.04.2016 using a predetermined set of search criteria. The search identified 363 papers, 28 of which met the specified inclusion criteria. Positive relationships were mainly observed in studies investigating the primary sensory and motor systems and in resting state data. Both positive and negative relationships were seen in studies using cognitive tasks. This systematic review suggests that there is a relationship between FA and the fMRI BOLD response and that the relationship is task and region dependent. Behavioural and/or clinical variables were shown to be essential in interpreting the relationships between imaging measures. The results highlight the heterogeneity in the methods used across papers in terms of fMRI task, population investigated and data analysis techniques. Further investigation and replication of current findings are required before definitive conclusions can be drawn.
Asunto(s)
Mapeo Encefálico/métodos , Encéfalo/fisiología , Imagen por Resonancia Magnética , Sustancia Blanca/fisiología , Anisotropía , Cognición/fisiología , HumanosRESUMEN
OBJECTIVE: The aim of this study was to investigate the relationship between mental illness identity, shame, secrecy, public stigma, and disclosure amongst college students. Participants included 1393 college students from five postsecondary institutions. METHODS: Structural equation modeling was used to examine two path models predicting disclosure and desire to join a program aiding with disclosure. RESULTS: Variables found to be significant in predicting disclosure included mental illness identity and public stigma. In turn, desire for disclosure predicted desire to join a program aiding in disclosure. Gender and race/ethnic differences were observed, with men and Whites more likely to want to disclose a mental illness or join a program aiding with disclosure compared with women and non-Whites, respectively. CONCLUSIONS: These findings suggest that some college students may find programs aiding in disclosure useful in assisting them to achieve their desire to be "out" with their mental illness.
Asunto(s)
Revelación , Trastornos Mentales/psicología , Estigma Social , Estudiantes/psicología , Adulto , Femenino , Humanos , Masculino , Vergüenza , Universidades , Adulto JovenRESUMEN
Human cognition relies on attentional capacities which, among others, are influenced by factors like tiredness or mood. Based on their inherent preferences in sleep and wakefulness, individuals can be classified as specific "chronotypes". The present study investigated how early, intermediate and late chronotypes (EC, IC, LC) differ neurally on an attention-to-motion task. Twelve EC, 18 IC and 17 LC were included into the study. While undergoing functional magnetic resonance imaging (fMRI) scans, subjects looked at vertical bars in an attention-to-motion task. In the STATIONARY condition, subjects focused on a central fixation cross. During Fix-MOVING and Attend-MOVING, bars were moving horizontally. Only during the Attend-MOVING, subjects were required to attend to changes in the velocity of bars and indicate those by button presses. A two-way repeated measures ANOVA probed group by attentional load effects. The dorsolateral prefrontal cortex (DLPFC), insula and anterior cingulate cortex showed group by attention specific activations. Specifically, EC and LC presented attenuated DLPFC activation under high attentional load (Attend-MOVING), while EC showed less anterior insula activation than IC. LC compared to IC exhibited attenuation of superior parietal cortex. Our study reveals that individual sleep preferences are associated with characteristic brain activation in areas crucial for attention and bodily awareness. These results imply that considering sleep preferences in neuroimaging studies is crucial when administering cognitive tasks. Our study also has socio-economic implications. Task performance in non-optimal times of the day (e.g. shift workers), may result in cognitive impairments leading to e.g. increased error rates and slower reaction times.
Asunto(s)
Atención/fisiología , Corteza Cerebral/fisiología , Imagen por Resonancia Magnética/métodos , Percepción de Movimiento/fisiología , Desempeño Psicomotor/fisiología , Sueño/fisiología , Adolescente , Adulto , Ritmo Circadiano/fisiología , Humanos , Masculino , Factores de Tiempo , Adulto JovenRESUMEN
Sleep and wakefulness are crucial prerequisites for cognitive efficiency, the disturbances of which severely impact performance and mood as present e.g. after time zone traveling, in shift workers or patients with sleep or affective disorders. Based on their individual disposition to sleep and wakefulness, humans can be categorized as early (EC), late (LC) or intermediate (IC) chronotypes. While ECs tend to wake up early in the morning and find it difficult to remain awake beyond their usual bedtime, LCs go to bed late and have difficulties getting up. Beyond sleep/wake timings, chronotypes show distinct patterns of cognitive performance, gene expression, endocrinology and lifestyle. However, little is known about brain structural characteristics potentially underlying differences. Specifically, white matter (WM) integrity is crucial for intact brain function and has been related to various lifestyle habits, suggesting differences between chronotypes. Hence, the present study draws on Diffusion Tensor Imaging as a powerful tool to non-invasively probe WM architecture in 16 ECs, 23 LCs and 20 ICs. Track-based spatial statistics highlight that LCs were characterized by WM differences in the frontal and temporal lobes, cingulate gyrus and corpus callosum. Results are discussed in terms of findings reporting late chronotypes to exhibit a chronic form of jet lag accompanied with sleep disturbances, vulnerability to depression and higher consumption of nicotine and alcohol. This study has far-reaching implications for health and the economy. Ideally, work schedules should fit in with chronotype-specificity whenever possible.
Asunto(s)
Encéfalo/anatomía & histología , Encéfalo/fisiología , Ritmo Circadiano/fisiología , Imagen de Difusión Tensora/métodos , Fibras Nerviosas Mielínicas/ultraestructura , Sueño/fisiología , Vigilia/fisiología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto JovenRESUMEN
Abnormal liver tests are one of the most common challenges in the primary care setting. Primary care practitioners order these tests for numerous reasons, including investigating abdominal signs and symptoms or suspected alcohol-use disorder, or to determine medication adverse effects. Evaluation should be guided by both the clinical presentation and the pattern of injury. In this article, we will focus on the epidemiology, pathophysiology, clinical presentation, diagnostic work-up, and management of elevated liver enzymes, with an emphasis on the most common causes of abnormal liver testing.
Asunto(s)
Hepatopatías , Hígado , Humanos , Hígado/enzimología , Hepatopatías/diagnósticoRESUMEN
OBJECTIVES: To examine associations between factors associated with loss to follow-up and effectiveness in the TelAbortion project, which provided medication abortion by direct-to-patient telemedicine and mail in the United States. STUDY DESIGN: The study population for this descriptive analysis included abortions among participants enrolled in the TelAbortion study with data present in a web-based database tool from November 2018 to September 2021 who were mailed a medication package. The analysis included information on abortions across nine sites. In this analysis, we used generalized estimating equations to examine factors associated with loss to follow-up and effectiveness. RESULTS: Of the 1831 abortions included in this analysis, 1553 (84.8%) were classified as having complete follow-up and 278 (15.2%) were classified as lost to follow-up. In a multivariable analysis, factors significantly associated with loss to follow-up included history of medical abortion, education, gestational age, study site, and whether the TelAbortion was performed pre- or post-COVID-19 onset (p < 0.05). The rate of treatment failure (i.e., abortions resulting in continuing pregnancy or uterine evacuation) reported in this study was 5.1%. The only covariate associated with both loss to follow-up and treatment failure was higher gestational age. However, using gestational age to impute missing abortion outcomes did not substantially change the estimated failure rate. CONCLUSIONS: Abortions that were lost to follow-up differed substantially from those with complete follow-up, which could bias the effectiveness estimate. However, imputing outcomes based on available and appropriate pretreatment data did not substantially affect the estimate. This finding is encouraging, although it does not exclude the possibility of bias due to unmeasured factors. IMPLICATIONS: Significant differences between abortion cases with complete follow-up and those lost to follow-up provide insights into abortion cases that may be at a higher risk for being lost. The low treatment failure rate indicates that the telemedicine provision of medication abortion is effective.
Asunto(s)
Aborto Inducido , COVID-19 , Telemedicina , Embarazo , Femenino , Humanos , Estados Unidos , Estudios de Seguimiento , Aborto Inducido/métodos , Insuficiencia del Tratamiento , Telemedicina/métodosRESUMEN
Aim: To analyze the predictive value of biochemical liver tests in patients with malignant melanoma, breast, colorectal or lung cancers at the time of diagnosis of liver metastases. Methods: A retrospective review of patients with the above-mentioned solid tumors at MedStar Georgetown University Hospital from 2016-2020. Results: The highest optimal cutoff according to sensitivity and specificity for the presence of liver metastases was for AST ≥1.5 × ULN for melanoma, lung, and breast cancers and ≥2 × ULN for colorectal cancer, ALT ≥1.25 × ULN for melanoma, breast and colorectal cancers and ≥1.5 × ULN for lung cancer, and ALP ≥1.5 × ULN for melanoma, breast and colorectal cancers. Conclusion: Using thresholds of liver enzymes above the ULN may improve the diagnostic accuracy for the presence of liver metastases.
RESUMEN
This study explores healthcare professionals' perspectives about the impact of behavioral health integration (BHI) on pediatric primary care delivery in community health centers (CHCs). A concurrent, qualitative-dominant mixed methods empirical study design was utilized, applying semi-structured interviews with healthcare professionals at the end of the implementation phase of a 3-year co-development, implementation, and evaluation process. Surveys were also administered at three time points. Via thematic analysis, emergent qualitative themes were mapped onto the Relational Coordination (RC) conceptual framework to triangulate and complement final qualitative results with quantitative results. Interview findings reveal five emergent themes aligning with RC domains. Survey results show that healthcare professionals reported increased behavioral healthcare integration into clinic practice (p = 0.0002) and increased clinic readiness to address behavioral health needs (p = 0.0010). Effective pediatric BHI and care delivery at CHCs may rely on strong professional relationships and communication. Additional research from the patient/caregiver perspective is needed.
Asunto(s)
Atención a la Salud , Psiquiatría , Humanos , Niño , Investigación Cualitativa , Personal de Salud , Encuestas y CuestionariosRESUMEN
OBJECTIVE: The purpose of this study is to understand change in parent-reported outcomes of mental health symptoms, health-related quality of life (QoL), and school-related functioning among children receiving mental health care at 3 federally qualified health centers engaging in a comprehensive pediatric mental health integration model. METHODS: Trained personnel enrolled English- or Spanish-speaking families of 6- to 12-year-old children who had recently started receiving integrated mental health care and surveyed their parent/caregiver at 3 time points: entry into the cohort, 6-month follow-up, and 12-month follow-up (unique N = 51). Primary outcomes included validated measures of child symptoms, child health-related QoL, and child school-related functioning. Secondary outcomes focused on parental functioning and included validated measures of parental stress and depressive and internalizing symptoms. A multilevel mixed-effects generalized linear model was used to estimate the change in parent-reported outcomes over time, with inverse probability weights used to address attrition. Additional analyses were conducted to determine the degree to which changes in symptoms over time were associated with improvements in school-related functioning. RESULTS: Over 12 months, children's mental health symptoms, health-related QoL, and school-related functional outcomes significantly improved. No changes in parental functioning were observed. In addition, improvements in mental health symptoms and health-related QoL were associated with improvements in school-related functional outcomes over time. CONCLUSION: Findings demonstrate that outcomes of children who received integrated mental health care improved over time, both in regard to mental health and school functioning.
Asunto(s)
Trastornos Mentales , Calidad de Vida , Niño , Humanos , Salud Mental , Padres/psicología , Trastornos Mentales/epidemiología , Trastornos Mentales/terapiaRESUMEN
The gastrointestinal (GI) tract is an infrequent site of breast cancer metastasis, but it often poses a diagnostic challenge when it occurs. The symptoms of GI metastases are often nonspecific, and the endoscopic manifestations are variable, requiring tissue biopsies for histologic examination. We report 2 cases of breast cancer metastasizing to the GI tract: a case of human epidermal growth factor receptor 2-positive invasive ductal carcinoma that metastasized to the stomach, a rare location for this histologic subtype, and another case of invasive lobular cell carcinoma that metastasized to the colon with unusual findings of mucosal pallor and edema on colonoscopy.
RESUMEN
BACKGROUND: Research supports integrated pediatric behavioral health (BH), but evidence gaps remain in ensuring equitable care for children of all ages. In response, an interdisciplinary team codeveloped a stepped care model that expands BH services at 3 federally qualified health centers (FQHCs). METHODS: FQHCs reported monthly electronic medical record data regarding detection of BH issues, receipt of services, and psychotropic medications. Study staff reviewed charts of children with attention-deficit/hyperactivity disorder (ADHD) before and after implementation. RESULTS: Across 47 437 well-child visits, >80% included a complete BH screen, significantly higher than the state's long-term average (67.5%; P < .001). Primary care providers identified >30% of children as having BH issues. Of these, 11.2% of children <5 years, 53.8% of 5-12 years, and 74.6% >12 years were referred for care. Children seen by BH staff on the day of referral (ie, "warm hand-off") were more likely to complete an additional BH visit than children seen later (hazard ratio = 1.37; P < .0001). There was no change in the proportion of children prescribed psychotropic medications, but polypharmacy declined (from 9.5% to 5.7%; P < .001). After implementation, diagnostic rates for ADHD more than doubled compared with baseline, follow-up with a clinician within 30 days of diagnosis increased (62.9% before vs 78.3% after; P = .03) and prescriptions for psychotropic medication decreased (61.4% before vs 43.9% after; P = .03). CONCLUSIONS: Adding to a growing literature, results demonstrate that integrated BH care can improve services for children of all ages in FQHCs that predominantly serve marginalized populations.
Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Psiquiatría , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Niño , Atención a la Salud , Humanos , Psicotrópicos/uso terapéutico , Derivación y ConsultaAsunto(s)
Desensibilización Inmunológica , Hipersensibilidad a las Drogas/terapia , Terapia de Reemplazo Enzimático/efectos adversos , Trasplante de Células Madre Hematopoyéticas , Iduronidasa/efectos adversos , Mucopolisacaridosis I/terapia , Proteínas Recombinantes/efectos adversos , Administración Intravenosa , Anafilaxia/etiología , Anafilaxia/prevención & control , Anafilaxia/terapia , Terapia Combinada , Desensibilización Inmunológica/métodos , Hipersensibilidad a las Drogas/diagnóstico , Hipersensibilidad a las Drogas/etiología , Resultado Fatal , Humanos , Iduronidasa/administración & dosificación , Iduronidasa/inmunología , Lactante , Masculino , Insuficiencia Multiorgánica/etiología , Proteínas Recombinantes/administración & dosificación , Proteínas Recombinantes/inmunologíaRESUMEN
Children in low-income families are at risk for delayed diagnosis of autism spectrum disorder (ASD). The cascade-of-care model, which examines steps of care for quality and efficacy, can identify lesions in the process for evaluation and diagnosis for children at risk for ASD. Little is known about predictors that influence key steps in this process. We performed a retrospective chart review of 110 children under age five years from an academic medical center with social communication concerns. We assessed predictors of age of referral for ASD diagnostic evaluation, time to diagnosis, and likelihood of diagnostic completion. Children with continuity of primary care were referred at an earlier age than those receiving primary care at multiple centers. Compared with children with missed visits, children attending all well-child visits had a shorter median time to diagnosis. These findings illustrate a need for primary medical homes to facilitate early and timely ASD evaluations.
Asunto(s)
Trastorno del Espectro Autista , Trastorno del Espectro Autista/diagnóstico , Preescolar , Comunicación , Humanos , Pobreza , Derivación y Consulta , Estudios RetrospectivosRESUMEN
LAY ABSTRACT: Little is known about parent experiences throughout the diagnostic process for autism or how these parent experiences may help explain the disparities that exist between Hispanic and non-Hispanic families in time-to-diagnosis among children identified as at risk for autism. The current study examined trajectories of parenting stress, coping, and perceived family impact over time, throughout the autism diagnostic process among Hispanic and non-Hispanic families. Hispanic families reported lower levels of parenting stress, coping, and negative family impact across time. Further, there were differences in the change in use of coping and the amount of negative family impact reported between Hispanic and non-Hispanic parents over time. These differences shed light on the unique experiences and strengths of Hispanic families demonstrate. Interventions that leverage those strengths and focus on education, empowerment, and resilience might be particularly beneficial for Hispanic families and may also better inform work to increase resilience.
Asunto(s)
Trastorno del Espectro Autista , Adaptación Psicológica , Niño , Humanos , Responsabilidad Parental , Padres , Estrés PsicológicoRESUMEN
The suppression of distracting information in order to focus on an actual cognitive goal is a key feature of executive functions. The use of brain imaging methods to investigate the underlying neurobiological brain activations that occur during conflict processing have demonstrated a strong involvement of the fronto-parietal attention network (FPAN). Surprisingly, the directional interconnections, their time courses and activations at different frequency bands remain to be elucidated, and thus, this constitutes the focus of this study. The shared information flow between brain areas of the FPAN is provided for frequency bands ranging from the theta to the lower gamma band (4-40 Hz). We employed an adaptation of the Simon task utilizing Magnetoencephalography (MEG). Granger causality was applied to investigate interconnections between the active brain regions, as well as their directionality. Following stimulus onset, the middle frontal precentral cortex and superior parietal cortex were significantly activated during conflict processing in a time window of between 300 to 600ms. Important differences in causality were found across frequency bands between processing of conflicting stimuli in the left as compared to the right visual hemifield. The exchange of information from and to the FPAN was most prominent in the beta band. Moreover, the anterior cingulate cortex and the anterior insula represented key areas for conflict monitoring, either by receiving input from other areas of the FPAN or by generating output themselves. This indicates that the salience network is at least partly involved in processing conflict information. The present study provides detailed insights into the underlying neural mechanisms of the FPAN, especially regarding its temporal characteristics and directional interconnections.
Asunto(s)
Giro del Cíngulo/fisiología , Red Nerviosa/fisiología , Lóbulo Parietal/fisiología , Desempeño Psicomotor/fisiología , Adulto , Mapeo Encefálico/métodos , Cognición/fisiología , Conflicto Psicológico , Humanos , Magnetoencefalografía/métodos , Masculino , Adulto JovenRESUMEN
Importance: Early identification of autism spectrum disorder (ASD) is associated with improved cognitive and behavioral outcomes. Targeted strategies are needed to support equitable access to diagnostic services to ensure that children from low-income and racial/ethnic minority families receive the benefits of early ASD identification and treatment. Objective: To test the efficacy of family navigation (FN), an individually tailored, culturally informed care management strategy, to increase the likelihood of achieving diagnostic ascertainment among young children at risk for ASD. Design, Setting, and Participants: This randomized clinical trial of 249 families of children aged 15 to 27 months who had positive screening results for possible ASD was conducted in 11 urban primary care sites in 3 cities. Data collection occurred from February 24, 2015, through November 5, 2018. Statistical analysis was performed on an intent-to-treat basis from November 5, 2018, to July 27, 2020. Interventions: Families were randomized to FN or conventional care management (CCM). Families receiving FN were assigned a navigator who conducted community-based outreach to families to address structural barriers to care and support engagement in recommended services. Families receiving CCM were assigned to a care manager, who did limited telephone outreach. Families received FN or CCM after positive initial screening results and for 100 days after diagnostic ascertainment. Main Outcomes and Measures: The primary outcome, diagnostic ascertainment, was measured as the number of days from randomization to completion of the child's clinical developmental evaluation, when a diagnosis of ASD or other developmental disorder was determined. Results: Among 250 families randomized, 249 were included in the primary analysis (174 boys [69.9%]; mean [SD] age, 22.0 [3.5] months; 205 [82.3%] publicly insured; 233 [93.6%] non-White). Children who received FN had a greater likelihood of reaching diagnostic ascertainment over the course of 1 year (FN, 108 of 126 [85.7%]; CCM, 94 of 123 [76.4%]; unadjusted hazard ratio [HR], 1.39 [95% CI, 1.05-1.84]). Site (Boston, New Haven, and Philadelphia) and ethnicity (Hispanic vs non-Hispanic) moderated the effect of FN (treatment × site interaction; P = .03; Boston: HR, 2.07 [95% CI, 1.31-3.26]; New Haven: HR, 1.91 [95% CI, 0.94-3.89]; and Philadelphia: HR, 0.91 [95% CI, 0.60-1.37]) (treatment × ethnicity interaction; P < .001; Hispanic families: HR, 2.81 [95% CI, 2.23-3.54] vs non-Hispanic families: HR, 1.49 [95% CI, 1.45-1.53]). The magnitude of FN's effect was significantly greater among Hispanic families than among non-Hispanic families (diagnostic ascertainment among Hispanic families: FN, 90.9% [30 of 33], and CCM, 53.3% [16 of 30]; vs non-Hispanic families: FN, 89.7% [35 of 39], and CCM, 77.5% [31 of 40]). Conclusions and Relevance: Family navigation improved the likelihood of diagnostic ascertainment among children from racial/ethnic minority, low-income families who were detected as at risk for ASD in primary care. Results suggest differential effects of FN by site and ethnicity. Trial Registration: ClinicalTrials.gov Identifier: NCT02359084.