Estimating Heterogeneous Intra-class Correlation Coefficients in Dyadic Ecological Momentary Assessment

A method is described for estimating and testing predictors for influence on the variance of momentary behaviors in dyadic ecological momentary assessment data. Results show that the method allows intraclass correlations of momentary observations from two members of the same couple to vary by observation-level, individual-level and couple-level predictors

Applying systems thinking and human-centered design to development of intervention implementation strategies: an example from adolescent health research

Introducing innovative health interventions into clinic settings requires a comprehensive and creative approach to multiple implementation challenges. To optimize implementation of a sexual and reproductive health intervention for young women with depression, we applied systems thinking and human-centered design thinking methods to develop tools and strategies to address issues influencing intervention implementation in diverse clinics. We recruited staff from three clinics that provide sexual and reproductive health and behavioral health care to young women. Across five sessions (four video conference calls, one in-person workshop), we used systems mapping to identify key stakeholders and their relationships, processes, and challenges to care; formed clinic staff-investigator design teams; brainstormed about challenges that would influence intervention implementation and considered potential solutions; prioritized implementation challenges; and designed prototypes of solutions. Participants responded positively to the systems thinking perspective and collaborative design thinking process, which resulted in generalizable considerations about solving implementation challenges for clinic-based interventions

Genotype-specific Concordance of Chlamydia trachomatis Genital Infection within Heterosexual Partnerships

Background Sexual transmission rates of Chlamydia trachomatis (Ct) cannot be measured directly; however, the study of concordance of Ct infection in sexual partnerships (dyads) can help to illuminate factors influencing Ct transmission. Methods Heterosexual men and women with Ct infection and their sex partners were enrolled and partner-specific coital and behavioral data collected for the prior 30 days. Microbiological data included Ct culture, nucleic acid amplification testing (NAAT), quantitative Ct polymerase chain reaction (qPCR), and ompA genotyping. We measured Ct concordance in dyads, and factors (correlates) associated with concordance. Results 121 women and 125 men formed 128 dyads. Overall, 72.9% of male partners of NAAT-positive women and 68.6% of female partners of NAAT-positive men were Ct-infected. Concordance was more common in dyads with culture-positive members (78.6% of male partners, 77% of female partners). Partners of women and men who were NAAT-positive only had lower concordance (33.3%, 46.4%, respectively). Women in concordant dyads had significantly higher median endocervical qPCR values (3,032) compared with CT-infected women in discordant dyads (1,013 IFU DNA equivalents per ml), p<0.01. Among 54 Ct-concordant dyads with ompA genotype data for both members, 96.2% had identical genotypes. Conclusions Higher organism load appears associated with concordance among women. Same-genotype chlamydial concordance was high in sexual partnerships. No behavioral factors were sufficiently discriminating to guide partner services activities. Findings may help model coitus-specific transmission probabilities

The effectiveness of mobile-based ecological momentary motivational enhancement therapy in reducing craving and severity of cannabis use disorder: Study protocol for a randomized controlled trial

Objective: This study aims to investigate the effectiveness of Ecological Momentary Motivational Enhancement Therapy (EM-MET) in reducing craving and severity of Cannabis Use Disorder (CUD) among young adults. Methods: This multicenter, single-blinded randomized controlled trial (RCT) will be conducted over a period of 11 weeks. Eighty patients with CUD will be randomly assigned to two equal-sized parallel groups, either the Motivational Enhancement Therapy (MET) group or the EM-MET group. All participants will receive four individual face-to-face sessions of MET (twice a week). The MET group will not receive any other treatments after these sessions; however, in the EM-MET group, the top triggers of patients will be assessed using mobile-based Ecological Momentary Assessment (EMA) five times a day within three weeks (after face-to-face sessions) and they will receive a call from the therapist who provides them with EM-MET (in the form of an emergency telephone helpline) as soon as they report experiencing triggers of cannabis use that are assessed using EMA in their everyday lives. Primary outcomes including CUD severity and the severity of craving will be evaluated using the Leeds Dependence Questionnaire and the Self-efficacy and Temptation Scale, respectively. These assessments will be conducted at pre-treatment, post-treatment, and a six-week follow-up. Discussion: If proven feasible and effective, the results of this study will offer clinicians an evidence-based treatment approach to address craving and dependency in patients with CUD. Moreover, these patients will receive effective treatment in real time and in real life, when and where it is most needed. However, it is important to consider the limitations of this study, such as the specific population studied in Tehran, Iran, which may affect the generalizability of the results. Nevertheless, the implementation of Ecological Momentary Interventions (EMIs) in real-life settings holds promise for timely and effective treatment.Trial registration: This trial was registered in the Iranian Registry of Clinical Trials on 21 February 2023. Registry No. IRCT20221224056908N1

Validation of a single question for the assessment of past three-month alcohol consumption among adolescents.

BackgroundScreening, Brief Intervention, and Referral to Treatment (SBIRT) for substance use is increasingly used in clinical care. Despite its endorsement by several professional societies, the U.S. Preventive Services Task Force has found the evidence base for adolescent SBIRT to be insufficient. A measure of substance use that is brief enough to embed in the electronic medical record could be used in pragmatic trials that enroll large numbers of primary care patients, facilitating research in this area.MethodsParticipants aged 14-18 years (N = 492) completed an electronic survey that included a 90-day Timeline Follow Back (TLFB) Calendar, considered the criterion standard, along with three survey questions about the frequency of their alcohol use: days of use in the past three months, average days of use per week in the past three months, and average days of use per month in the past year. We calculated the correlation between the number of days reported on each of the three questions and the total number of days of use reported on the TLFB.ResultsThe question on number of days of use in the past three months was highly correlated with alcohol consumption frequency on the 90-day TLFB assessment (rho = 0.903). Other items displayed lower but satisfactory correlation with the TLFB (rho = 0.719-0.830).ConclusionsA single question about past 3-month frequency of alcohol use was highly correlated with alcohol use frequency on the criterion standard TLFB among adolescents presenting for routine primary care

Condom use motivations and selected behaviours with new versus established sex partners

Objective To compare condom use motives and behaviours in the context of penile–vaginal intercourse (PVI) with new versus established sexual partners, using daily event-level data among a clinic-recruited sample. Methods: Participants (ages 15–65 years old) were recruited from five sexually transmissible infection (STI) clinics in three United States cities. They were provided with personal digital assistants and instructed to respond to daily questionnaire items regarding PVI events from the past 24 h. Generalised estimations equations were used to make inferences on age-adjusted estimated odds ratios, comparing events occurring with established versus new partners. Results: For males, pregnancy prevention was a more common motivation for condom use in new relationships (P &lt; 0.001). Males with new sex partners were more likely to report condom use (P &lt; 0.005) and also reported fewer errors or problems in condom use with new sex partners (P &lt; 0.001). For females, pregnancy prevention (P = 0.03), STI acquisition (P &lt; 0.001) and STI transmission (P = 0.005) were more likely to be motives for condom use with new versus established partners. Also, females with new sex partners were more likely to report condom use (P &lt; 0.001) as well as using multiple condoms during a single event (P = 0.03). Conclusion: Event-level findings suggest that condom use motivations and behaviours vary depending on whether PVI occurs between established versus new sex partners. Condom use is more likely for PVI with new partners, but other condom-associated behaviours and motivations differ between females and males.</jats:p

Depressive symptom screening and endorsement of psychosis risk-related experiences in a diverse adolescent and young adult outpatient clinic in the US

BACKGROUND: Early identification and intervention is a gold standard for psychotic disorders, for which delays in care can have serious consequences. Screening for psychosis in primary care may circumvent barriers related to stigma and facilitate shorter pathways to care. Yet, there is debate regarding the benefit-risk balance for psychosis screening in general adolescent populations. METHODS: Primary care patients of an adolescent/young adult medical clinic in the US ages 14-21 self-administered surveys assessing age, sex, receipt of psychotherapy, and occurrence, frequency (1-5), and distress (0-3) for 23 psychosis risk (PR) symptoms, including 6 general/nonspecific items and 17 psychosis-specific items. Participants also completed the 9-item Patient Health Questionnaire (PHQ-9); scores of ≥10 suggested clinically significant depressive symptoms. Analyses characterized PR symptoms and examined associations of PR symptom distress with current therapy and depressive symptom severity. RESULTS: Of 212 patients who completed the survey, 75% endorsed ≥1 PR symptom and 27% rated ≥3 on distress for psychosis-specific items. Those with high PHQ-9 scores reported higher PR distress overall (t = -6.1, df = 52.3, p \u3c 0.001) but not on psychosis-specific items such as hallucinations and suspiciousness. One in 9 participants reported heightened PR distress without being in therapy or having high depressive symptoms. CONCLUSIONS: Most adolescents in this primary care sample endorsed symptoms associated with PR. Distress related to these symptoms was less common but occurred even in the absence of depressive symptoms. PR screening only in youth with high depressive symptom screens or in mental health care may miss youth needing further assessment for psychosis