Feasibility of an Open Dialogue-Inspired Approach for Young Adults with Psychosis in a Public Hospital System.

The objective was to determine the feasibility of an Open Dialogue-inspired approach in a metropolitan, public hospital setting with predominately African American participants. Participants were ages 18-35, experienced psychosis within the past month, and involved at least one support person in their care. We evaluated domains of feasibility including implementation, adaptation, practicality, acceptability, and limited-efficacy. An organizational change model (Addressing Problems Through Organizational Change) facilitated implementation. Clinicians received three trainings and ongoing supervision. Network meetings were successfully implemented with good self-reported fidelity to principles of dialogic practice. Some adaptations (less frequent meetings and no home visits) were necessary. A subset of individuals completed research assessments over 12 months. Qualitative interviews with participants suggested the intervention was acceptable. Symptom and functional outcomes were preliminary but trended toward improvement. Implementation was feasible with relatively brief training, organizational change processes, and context-specific adaptations. Lessons learned can assist in planning a larger research study.

Changes in knowledge, behavioural expectations, self-efficacy, and stigma after an educational campaign about early psychosis for jail correction officers.

AIM: Given a lack of interventions to identify and engage individuals with early psychosis in jail and connect them to specialty care in the community upon release, we designed a Targeted Educational Campaign (TEC) for correction officers working in jails. We report on impacts of the TEC on officers' cognitive and attitudinal outcomes. METHODS: Three different cohorts of officers-totaling n = 451-took part in a survey: 200 at baseline before the TEC began, 123 at 6-months into the TEC, and 128 at 12-months into the TEC. Among each cohort of officers, four constructs were measured: (1) knowledge about early psychosis; (2) self-efficacy around detecting early psychosis and referring to mental health services within the jail; (3) expectations about the benefits of detection and referral to specialty care; and (4) social distance stigma toward detainees with early psychosis. RESULTS: While exposure to TEC elements was as-planned in the first 6-months, exposure diminished substantially at 12-months, coinciding with increasing fatigue among correction officers due to the COVID-19 pandemic as well as serious staffing shortages. Knowledge, behavioural expectations, and self-efficacy scores improved from baseline to 6-months, with greater exposure to roll-call messages driving scores. Knowledge and behavioural expectations at 12-months were associated with having received an information post card. Social distance stigma worsened across timepoints. CONCLUSIONS: An educational campaign for jail staff can enhance knowledge, self-efficacy, and behavioural expectations regarding early psychosis, though only while the campaign elements are active. Further research should investigate whether or not social distance stigma or other types of stigma increase alongside improvements.

Opening Doors to Recovery: A Randomized Controlled Trial of a Recovery-Oriented Community Navigation Service for Individuals With Serious Mental Illnesses and Repeated Hospitalizations.

Objective: Opening Doors to Recovery (ODR) is a community navigation and recovery support model created in southeast Georgia by diverse, collaborative stakeholders. Following promising results from a quasi-experimental study, this randomized controlled trial hypothesized that, among patients with serious mental illnesses being discharged from inpatient psychiatric settings, compared to those randomized to traditional case management (CM) services, those randomized to ODR would have (1) lower likelihood of hospitalization, fewer hospitalizations, and fewer inpatient days; (2) lower likelihood of arrest, fewer arrests, and longer time to arrest; and, secondarily, (3) greater housing satisfaction and housing stability; and (4) higher scores on several scales measuring recovery-related constructs.Methods: 240 individuals with Structured Clinical Interview for DSM-5 Disorders-based psychotic or mood disorders, functional impairment, and repeated hospitalizations were randomized (December 2014 to June 2018) to ODR or CM. Hospitalization and arrest data were collected from State agencies after 12 months, and housing- and recovery-related measures were collected in person, longitudinally at 4, 8, and 12 months. Intention-to-treat analyses were conducted. Effects of dropout were accounted for, and sensitivity analyses were run.Results: ODR was associated with fewer days hospitalized (RR = 0.86, P = .001), a lower incidence of arrests (OR = 0.35, P < .0005), and longer time to arrest (HR = 0.42, P = .001). In addition, measures of housing satisfaction (Cohen d = 0.45) and recovery (Cohen d = 0.33) were significantly more improved in ODR patients compared to CM patients.Conclusions: The ODR model appears to have advantages over more traditional CM services and could fill a gap in the service array. Studying the mediators of success, cost benefit, dissemination, fidelity, and financing of the model is warranted.Trial Registration: ClinicalTrials.gov identifier: NCT04612777.

Modeling the effects of Crisis Intervention Team (CIT) training for police officers: How knowledge, attitudes, and self-efficacy drive de-escalation skills and referral decisions.

OBJECTIVE: Prior research on Crisis Intervention Team (CIT) training for police officers has demonstrated improvements in knowledge, attitudes, self-efficacy, and stigma, but how these factors work together to influence behavioral outcomes like de-escalation skills and referral decisions remains unstudied. METHOD: 251 CIT-trained and 335 non-CIT officers completed in-depth surveys measuring these six constructs. We used structural equation modeling to test fit of the data to our hypothesized model and made indicated changes to improve fit. RESULTS: An alternate 8-path model (with three paths originally hypothesized being removed) fit reasonably well, and allowing path coefficients to differ for CIT and non-CIT groups resulted in models with similar fit statistics. CONCLUSION: CIT training enhances knowledge and attitudes, both of which have beneficial effects on stigma. Though an important outcome itself, lower stigma does not have an effect on de-escalation skills and referral decisions, though self-efficacy clearly does.

A Community Navigation Scale for Persons With Serious Mental Illnesses.

OBJECTIVE: The recovery paradigm in the context of serious mental illnesses pertains to several characteristics of community functioning, adjustment, and integration, among other constructs. Additional rating scales would be beneficial for measuring various facets of community functioning for research that is recovery oriented as opposed to symptom focused. The Community Navigation Scale was developed as part of the Opening Doors to Recovery project to address several aspects of navigating community resources. METHODS: After item development, the 21-item Community Navigation Scale was used across two studies with 340 participants who had serious mental illnesses. Factor analysis revealed three potential factors, and subscales were computed. RESULTS: The social and physical well-being subscale (seven items, Cronbach's α=0.82) addressed community involvement, volunteering, finding enjoyable activities, and engaging in positive health behaviors. The accessing external resources subscale (nine items, Cronbach's α=0.80) tapped one's ability to obtain needed resources, ranging from medications to housing and from small appliances to classes in the community. The home and self-maintenance subscale (five items, Cronbach's α=0.73) measured abilities around shopping, cooking, cell phone use, house cleaning, and personal grooming and hygiene. Initial validity of the subscales was suggested through correlations with the Multnomah Community Ability Scale (r=0.65, 0.55, and 0.41 for social and physical well-being, accessing external resources, and home and self-maintenance, respectively). CONCLUSIONS: The Community Navigation Scale assesses dimensions of community functioning among persons with serious mental illnesses and may add to the array of research and clinical measures pertinent to recovery outcomes. Additional research on its psychometric properties is warranted.

A Comparison of Attitudes, Comfort, and Knowledge of Clozapine Among Two Diverse Samples of US Psychiatrists.

Considerable variation in clozapine utilization exists across the United States, and little is known about the perspective of psychiatrists in states with low clozapine use. To better understand clozapine practices, attitudes, and barriers, a survey was administered to a group of southeastern state conference attendees (SSCA; N = 86). The same survey was administered to psychiatrists belonging to a national community psychiatry organization (AACP; N = 57), and differences were analyzed across the two samples. In comparison to the AACP, the SSCA group felt less comfortable, perceived clozapine as less safe and effective, had fewer patients on clozapine, and were more likely to prefer antipsychotic polypharmacy to clozapine use. Across the sample, use of a myocarditis screening protocol was rare (N = 14/76; 18%) and less than half used plasma antipsychotic levels to guide dosage (N = 60/129; 47%). Continuing professional education on clozapine are needed for psychiatrists who see individuals with psychotic disorders.

Using the Theory of Planned Behavior to Understand How Crisis Intervention Team (CIT) Training Facilitates Police Officers' Mental Health Referrals.

The Theory of Planned Behavior posits that behaviors are predicted by one's intention to perform them; intention is driven by attitude toward the behavior, subjective norm, and perceived behavioral control. We used this theory to predict Crisis Intervention Team (CIT)-trained and non-CIT officers' intention to facilitate referral of persons with suspected mental illnesses to mental health services. CIT-trained (n = 251) and non-CIT (n = 335) officers from six law enforcement agencies participated. CIT-trained officers had significantly greater scores on all constructs. Theory constructs fit the data well, and fit did not differ meaningfully between the two groups. Direct and indirect predictors together accounted for 28% and 21%, respectively, of variance in behavioral intention. Attitude was the strongest predictor. Intentions to facilitate mental health referrals may be driven by the same factors among CIT-trained and non-CIT officers, but CIT officers, even at a median of 22 months after training, have significantly higher scores on those factors.

Cluster Analysis of Clozapine Consumer Perspectives and Comparison to Consumers on Other Antipsychotics.

Despite its unique efficacy, clozapine remains underutilized in the United States. Perceptions about clozapine and barriers to its use have been examined among prescribers, but insufficiently studied among consumers. We surveyed 211 antipsychotic consumers (86 on clozapine and 125 on other antipsychotics) on their medication-related perspectives in a public hospital system in Atlanta, Georgia, USA. In contrast to their previous regimen, 72% of clozapine consumers reported they were more satisfied with clozapine. When compared with consumers taking other antipsychotics, clozapine consumers reported more side effects but did not differ on other measures of satisfaction or efficacy. We found Caucasians to be overrepresented among clozapine, as compared to other antipsychotic consumers. Side effects most strongly associated with poor safety ratings were sedation, limb jerking, and dizziness when standing. However, clozapine was only rated less safe by consumers who experienced more than one of these side effects. We used an unsupervised clustering approach to identify three major groups of clozapine consumers. Cluster A (19%) had the lowest safety ratings, aversion to blood work, and a high rate of side effects that associate with lower safety ratings. Cluster B (25%) experienced more hospitalizations and reported satisfaction with clozapine that correlated with efficacy ratings, irrespective of safety ratings. Cluster C (56%) experienced fewer hospitalizations, fewer previous drug trials, greater educational attainment, lower rates of smoking, and rated clozapine more highly. This work identifies common side effects that influence the subjective safety of clozapine and suggests that attitudes toward clozapine depend on context-specific factors.

Similarities and Differences in Associations Between Duration of Untreated Psychosis (DUP) and Demographic, Premorbid, and Symptom Severity Measures in Two Samples of First-Episode Psychosis Patients from Mexico and the United States.

Early-psychosis researchers have documented that duration of untreated psychosis (DUP) is an important predictor of outcomes in first-episode psychosis. Very few cross-national studies have been conducted, and none have been carried out involving patients from both Mexico and the U.S. We collaborated to answer three questions: (1) Are DUP estimates similar in two very different settings and samples? (2) Are demographic variables, premorbid adjustment, and symptom severity similarly related to DUP in the two different settings? (3) Does the same set of variables account for a similar proportion of variance in DUP in the two settings? Data on sociodemographic characteristics, premorbid adjustment, symptom severity, and DUP were available for 145 Mexican and 247 U.S. first-episode psychosis patients. DUP was compared, and bivariate analyses and multiple linear regressions were carried out in each sample. DUP estimates were similar (medians of 35 weeks in Mexico and 38 weeks in the U.S.). In the Mexican sample, DUP was associated with gender, employment status, premorbid social adjustment, and positive symptom severity (explaining 18% of variance). In the U.S. sample, DUP was associated with age, employment status, premorbid social adjustment, and positive symptom severity (but in the opposite direction of that observed in the Mexican sample), accounting for 25% of variance. Additional cross-national collaborations examining key facets of early-course psychotic disorders, including DUP, will clarify the extent of generalizability of findings, strengthen partnerships for more internationally relevant studies, and support the global movement to help young people struggling with first-episode psychosis and their families.

Associations Between Two Domains of Social Adversity and Recovery Among Persons with Serious Mental Illnesses Being Treated in Community Mental Health Centers.

As mental health services are increasingly embracing the recovery model, we conducted a study to better understand how social adversity impacts recovery. We also examined how associations between social adversity and recovery are influenced (moderated or mediated) by symptom severity. Data on seven social adversity measures, eight recovery measures, and symptom severity were collected from 300 English-speaking participants, ages 18-65 years, with a diagnosis of a psychotic or mood disorder, from five community mental health agencies in diverse neighborhoods in Washington, D.C. We employed standard correlation, exploratory factor analyses, analysis of variance, and hierarchic regression procedures. Diagnostic category and gender impacted Home Environment Adversities (e.g., food insecurity, perceived neighborhood disorder), the diagnostic category-by-gender interaction influenced Social and Economic Adversities (e.g., years of education and income), and gender affected Recovery. Controlling for diagnostic category and gender, Social and Economic Adversities accounted for 1.7% of variance in Recovery, while Home Environment Adversities accounted for 8.6% (their joint influence was 3.4%). Although symptom severity did not moderate these associations, it partially mediated the effect of Social and Economic Adversities on Recovery, and substantially mediated the effect of Home Environment Adversities on Recovery. The extent to which patients with serious mental illnesses experience recovery may be meaningfully influenced not only by symptoms, but by their social and environmental circumstances.

Coping with Food Insecurity Among African American in Public-Sector Mental Health Services: A Qualitative Study.

While there are high rates of food insecurity among individuals with serious mental illnesses, and among African Americans, there is very little research on the ways African Americans in public-sector mental health services cope with food insecurity. This research paper presents qualitative data from a mixed methods study on the prevalence and management of food insecurity among African Americans using public sector mental health services. We interviewed 21 people about their everyday experiences of food insecurity and strategies they used to cope. While participants reported experiencing high levels of food insecurity, they also described the use of communal strategies to help them cope, including sharing food and cooking meals jointly, which seemed to reduce the negative effects of living with high levels of food insecurity as well as a serious mental illness. Policy innovations like communal gardens and kitchens provided through public mental health services may be particularly helpful.

Demographic and socioenvironmental predictors of premorbid marijuana use among patients with first-episode psychosis.

OBJECTIVE: We identified, in subjects with first-episode psychosis, demographic and socioenvironmental predictors of three variables pertaining to premorbid marijuana use: age at initiation of marijuana use, trajectories of marijuana use in the five years prior to onset of psychosis, and the cumulative "dose" of marijuana intake in that same premorbid period. METHODS: We enrolled 247 first-episode psychosis patients and collected data on lifetime marijuana/alcohol/tobacco use, age at onset of psychosis, diverse socioenvironmental variables, premorbid adjustment, past traumatic experiences, perceived neighborhood-level social disorder, and cannabis use experiences. Bivariate tests were used to examine associations between the three premorbid marijuana use variables and hypothesized predictors. Regression models determined which variables remained independently significantly associated. RESULTS: Age at initiation of cigarette smoking was linked to earlier initiation, faster escalation, and higher cumulative dose of premorbid marijuana use. During childhood, poorer academic performance was predictive of an earlier age at initiation of marijuana use, while poorer sociability was related to more rapid escalation to daily use and a higher cumulative dose. As expected, experiencing euphoric effects was positively correlated with trajectories and cumulative dose, but having negative experiences was unrelated. Traumatic childhood/adolescent experiences were correlated with rapid escalation and amount of marijuana used, but not with age at initiation of marijuana use. CONCLUSION: These data expand the very limited literature on predictors of premorbid marijuana use in first-episode psychosis. Given its association with earlier age at onset of psychosis, and poorer outcomes among first-episode patients, prevention and treatment efforts should be further developed.

The aprosody of schizophrenia: Computationally derived acoustic phonetic underpinnings of monotone speech.

OBJECTIVE: Acoustic phonetic methods are useful in examining some symptoms of schizophrenia; we used such methods to understand the underpinnings of aprosody. We hypothesized that, compared to controls and patients without clinically rated aprosody, patients with aprosody would exhibit reduced variability in: pitch (F0), jaw/mouth opening and tongue height (formant F1), tongue front/back position and/or lip rounding (formant F2), and intensity/loudness. METHODS: Audiorecorded speech was obtained from 98 patients (including 25 with clinically rated aprosody and 29 without) and 102 unaffected controls using five tasks: one describing a drawing, two based on spontaneous speech elicited through a question (Tasks 2 and 3), and two based on reading prose excerpts (Tasks 4 and 5). We compared groups on variation in pitch (F0), formant F1 and F2, and intensity/loudness. RESULTS: Regarding pitch variation, patients with aprosody differed significantly from controls in Task 5 in both unadjusted tests and those adjusted for sociodemographics. For the standard deviation (SD) of F1, no significant differences were found in adjusted tests. Regarding SD of F2, patients with aprosody had lower values than controls in Task 3, 4, and 5. For variation in intensity/loudness, patients with aprosody had lower values than patients without aprosody and controls across the five tasks. CONCLUSIONS: Findings could represent a step toward developing new methods for measuring and tracking the severity of this specific negative symptom using acoustic phonetic parameters; such work is relevant to other psychiatric and neurological disorders.

A potential new form of jail diversion and reconnection to mental health services: II. Demonstration of feasibility.

Given fragmentation between mental health and criminal justice systems, we tested the feasibility of implementing a potential new form of pre-booking jail diversion. Our "linkage system" consists of three steps: (i) individuals with serious mental illnesses and an arrest history give special consent to be enrolled in a statewide database; (ii) if an officer has an encounter with an enrolled patient and runs a routine background check, he or she receives an electronic message to call; and (iii) the "linkage specialist" provides brief telephonic assistance to the officer. Of 206 eligible individuals, 199 (96.6%) opted in, the database received 679 hits, and the linkage specialist received 31 calls (and in at least three cases an arrest was probably averted). The mean number of arrests was 0.59 ± 0.92 in the year before enrollment (38.7% arrested) and 0.48 ± 0.83 during the 12-month intervention (30.7% arrested). Implementation is feasible, and a signal that the system might reduce incarceration was detected, encouraging development of a larger study.

A potential new form of jail diversion and reconnection to mental health services: I. Stakeholders' views on acceptability.

The most effective point of intervention to prevent unnecessary arrest/incarceration of persons with serious mental illnesses is the initial encounter with police. We piloted a new police-mental health linkage system. When officers run an enrolled participant's name/identifiers, they receive an electronic message that the person has mental health considerations and that they should call for information. The linkage specialist receives the call and assists telephonically. In this qualitative study to examine acceptability of the linkage system, we conducted nine focus groups with diverse stakeholders (e.g., enrolled patients, officers). Focus groups revealed that patients enrolled with the hope that the linkage system would prevent negative interactions with police and minimize risk of arrest. Officers reported preferring not to arrest mental health patients and were genuinely invested in helping them, and felt that the linkage system might be an additional tool during encounters. Findings revealed acceptability of the intervention, and further research is warranted.

Police officers' volunteering for (rather than being assigned to) Crisis Intervention Team (CIT) training: Evidence for a beneficial self-selection effect.

Officers' volunteering for Crisis Intervention Team (CIT) training-rather than being assigned-is assumed to be an important, beneficial self-selection bias. This bias remains poorly characterized, though CIT officers are more likely to be female and to have had exposure to the mental health field. We determined whether or not self-selection is beneficial with regard to knowledge, attitudes, and skills, as well as level of force used (i.e., no or low force versus any form of physical force) and disposition of subjects, in actual encounters. We compared CIT-trained officers who had volunteered with those who had been assigned using data from two prior, linked studies that compared CIT-trained and non-CIT officers on knowledge, attitudes, and skills (251 CIT-trained officers; 68% had volunteered), as well as behaviors (517 actual encounters provided by 91 CIT-trained officers; 70% had volunteered). Of 28 scores on knowledge, attitudes, and skills compared, six were statistically significantly different (p < .01) and another eight were marginally significant (.01 < p < .05). Furthermore, although CIT officers who had volunteered were more likely to report use of some form of physical force as we had defined it (which included the use of handcuffs), when they did so they were more likely to refer to treatment services and less likely to make an arrest. These effects were apparent even when taking into account effects of gender, having had exposure to the mental health field, empathy, and other covariates. In conclusion, we found evidence for benefits of self-selection/volunteering that should be further characterized, as it appears to be associated with better outcomes with regard to key attitudes, skills, and behaviors.

Associations between duration of untreated psychosis and domains of positive and negative symptoms.

AIM: The duration of untreated psychosis (DUP) has been established as an independent and significant predictor of negative outcomes in first-episode psychosis samples. Whereas literature has supported the association between DUP and severity of positive and negative symptoms, surprisingly little research to date has explored specifically what types of positive and negative symptoms are most associated with DUP. METHODS: DUP, Scale for the Assessment of Positive Symptoms (SAPS) and Scale for the Assessment of Negative Symptoms (SANS) data were collected in 247 first-episode psychosis participants (mean age: 23.9 ± 4.8) between August 2008 and June 2013. RESULTS: DUP was significantly but modestly associated with the severity of hallucinations (ρ = 0.222; P = 0.001), delusions (r = 0.202; P = 0.003) and formal thought disorder (ρ = 0.138; P = 0.043) but was not associated with bizarre behaviour. DUP was significantly but modestly associated with SANS avolition-apathy (ρ = 0.164; P = 0.016) and anhedonia-asociality (r = 0.321; P < 0.001) subscales but was not associated with affective flattening or blunting, alogia or attention. CONCLUSIONS: DUP is a complex and multifaceted phenomenon that is associated with early-course illness development. In efforts to improve early intervention services, prognoses and outcomes, it is vital to understand both the factors that contribute to lengthy untreated psychosis as well as the illness characteristics that are impacted by untreated psychosis.

Clinical Correlates of Initial Treatment Disengagement in First-Episode Psychosis.

AIM: Early engagement in care is thought to reduce disabling social losses related to the duration of untreated psychosis (DUP), such as school dropout, homelessness, and incarceration, which contribute to chronic disability. Early-intervention services that promote recovery will not be effective if eligible persons drop out of treatment after an initial hospitalization for a psychotic disorder. We had the unique opportunity to examine the treatment disengagement rate of patients with early psychosis after an initial hospitalization. METHODS: In a predominantly male, African-American, and socioeconomically disadvantaged group of 33 participants with first-episode psychosis assessed at initial hospitalization and six months after discharge, we compared clinical characteristics (medication adherence attitudes and behaviors, knowledge about schizophrenia, insight, symptom severity, and persistence of alcohol and drug use) among those who disengaged and people who engaged in care. RESULTS: More than half (18, 54.5%) attended <3 outpatient appointments in the six months after hospital discharge and, of those, nearly all (15, 83.3%) attended no outpatient appointments. Disengaged people were much less adherent to medications in the past month and six months, and scored lower on medication adherence attitudes, knowledge about psychosis, and insight. They had greater positive symptom severity and a higher likelihood of continuing drug use. Clinical Relevancy: Initial treatment disengagement is very common among young people with first-episode psychosis and is associated with poorer clinical status. More research is needed on the causes of disengagement during this critical period and ways to improve initial treatment engagement among people with first-episode psychosis.

Associations of acoustically measured tongue/jaw movements and portion of time speaking with negative symptom severity in patients with schizophrenia in Italy and the United States.

This is the first cross-language study of the effect of schizophrenia on speech as measured by analyzing phonetic parameters with sound spectrography. We hypothesized that reduced variability in pitch and formants would be correlated with negative symptom severity in two samples of patients with schizophrenia, one from Italy, and one from the United States. Audio recordings of spontaneous speech were available from 40 patients. From each speech sample, a file of F0 (pitch) and formant values (F1 and F2, resonance bands indicating the moment-by-moment shape of the oral cavity), and the portion of the recording in which there was speaking ("fraction voiced," FV), was created. Correlations between variability in the phonetic indices and negative symptom severity were tested and further examined using regression analyses. Meaningful negative correlations between Scale for the Assessment of Negative Symptoms (SANS) total score and standard deviation (SD) of F2, as well as variability in pitch (SD F0) were observed in the Italian sample. We also found meaningful associations of SANS affective flattening and SANS alogia with SD F0, and of SANS avolition/apathy and SD F2 in the Italian sample. In both samples, FV was meaningfully correlated with SANS total score, avolition/apathy, and anhedonia/asociality.

Marijuana use in the immediate 5-year premorbid period is associated with increased risk of onset of schizophrenia and related psychotic disorders.

OBJECTIVES: Several studies suggest that adolescent marijuana use predicts earlier age at onset of schizophrenia, which is a crucial prognostic indicator. Yet, many investigations have not adequately established a clear temporal relationship between the use and onset. METHODS: We enrolled 247 first-episode psychosis patients from six psychiatric units and collected data on lifetime marijuana/alcohol/tobacco use, and ages at onset of prodrome and psychosis in 210 of these patients. Cox regression (survival analysis) was employed to quantify hazard ratios (HRs) for effects of diverse premorbid use variables on psychosis onset. RESULTS: Escalation of premorbid use in the 5years prior to onset was highly predictive of an increased risk for onset (e.g., increasing from no use to daily use, HR=3.6, p<0.0005). Through the analysis of time-specific measures, we determined that daily use approximately doubled the rate of onset (HR=2.2, p<0.0005), even after controlling for simultaneous alcohol/tobacco use. Building on previous studies, we were able to determine that cumulative marijuana exposure was associated with an increased rate of onset of psychosis (p=0.007), independent of gender and family history, and this is possibly the reason for age at initiation of marijuana use also being associated with rate of onset in this cohort. CONCLUSIONS: These data provide evidence of a clear temporal relationship between escalations in use in the five years pre-onset and an increased rate of onset, demonstrate that the strength of the association is similar pre- and post-onset of prodromal symptoms, and determine that early adult use may be just as important as adolescent use in these associations.