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The present study aimed to explore sleep diary-derived parameters and sleep measures as mediators of the effects of the Transdiagnostic Intervention for Sleep and Circadian Dysfunction (TSC) on psychological outcomes. A secondary analysis of a two-arm randomized controlled trial of a group-based TSC for major depressive disorder was conducted. The participants included 152 adults (mean age = 34.0; 79.6% female) who were randomized into either the TSC or care-as-usual group. Mediation analysis indicated that reduction in insomnia symptom severity (standardized indirect effects: −0.06 to −0.17), sleep disturbance (−0.04 to −0.22), and sleep-related impairment (−0.04 to −0.17) was significantly mediated by sleep diary-derived sleep parameters. The treatment effects on depressive symptoms (standardized indirect effects: −0.05 to −0.10), anxiety symptoms (−0.04 to −0.07), fatigue (−0.05 to −0.09), functional impairment (−0.06 to −0.09), and quality of life (0.04 to 0.08) were sequentially mediated by sleep parameters and insomnia symptom severity. However, the severity of insomnia symptoms alone (magnitudes of standardized indirect effects: 0.09–0.17) but not sleep parameters alone (0.00–0.07) mediated the treatment effects on psychological outcomes, indicating that sleep parameters need to influence subjective sleep measures to sequentially affect psychological outcomes. These results underscore the critical roles of subjective sleep measures in clinical improvements within a sleep-targeted intervention.
There is a need for deeper understanding of neurological and psychological aspects of pedophilic disorder (PeD) to improve management of the disorder and thereby prevent child sexual abuse. Functional magnetic resonance imaging (fMRI) measures have been suggested as imaging biomarkers that may contribute towards this goal. A previous study using degarelix, a testosterone suppressing drug, showed promising results in decreasing the risk of committing child sexual abuse among individuals with PeD. In this study, we evaluate functional connectivity (FC) related to PeD and degarelix treatment.
Methods:
We used independent component analysis on resting state (rs)fMRI data acquired at baseline as well as two and ten weeks after injection of degarelix (or placebo) to evaluate FC alterations related to PeD and the degarelix treatment effect.
Results:
FC was altered in relation to several resting state networks in individuals with PeD compared to healthy controls at baseline. At follow-up time points, however, group comparisons were inconclusive and did after FDR correction not render statistically significant FC alterations when comparing patients to controls or related to degarelix treatment, child sexual abuse (CSA) dynamic risk scores or comorbidities.
Conclusion:
We found FC alterations in PeD compared to healthy controls at baseline, however, no consistent, treatment specific FC signature of degarelix was demonstrated.
Digital interventions for promoting relaxation are increasingly popular, yet few combine multiple sensory modalities. This study evaluated the effectiveness of a fully digital relaxation program combining hypnotherapy with aromatherapy and explored whether the scent can induce a conditioned relaxation effect.
Methods
In this four-arm randomized controlled trial (N = 504), participants were assigned to one of four groups for a 4-week intervention: (a) combined (hypnotherapy + aromatherapy), (b) hypnotherapy-only, (c) aromatherapy-only, or (d) control (minimal intervention pause). Sessions were self-guided and delivered online every 2 days. The primary outcome was subjective calmness, assessed via the calmness–restlessness subscale of the Multidimensional Mood Questionnaire. Secondary outcomes included perceived stress (PSS-10) and well-being (WHO-5). A fifth week with aromatherapy-only exposure was conducted in the combined and aromatherapy-only groups to test for conditioning.
Results
At post-intervention, both hypnotherapy-involved groups reported significant greater calmness than controls. The combined group showed a mean difference of β = 2.08 (95% CI: 0.50–3.65, p = 0.010, d = 0.38), while the hypnotherapy-only group showed β = 1.80 (95% CI: 0.24–3.37, p = 0.024, d = 0.33). Both effects were consistent across intention-to-treat and per-protocol analyses. Within-group improvements in calmness were also observed across all groups. No significant differences emerged from the conditioning test in week 5.
Conclusions
Digital hypnotherapy improved relaxation, with modest added benefit from aromatherapy. The results support the use of multisensory digital tools to enhance subjective calmness. However, no evidence for conditioned effects of the scent was observed under the current conditions.
The objectives of the present study were (a) to determine the effects of a 12-week intervention using wearables promoted through physical education classes on physical activity, body composition, physical fitness and psychological well-being of overweight or obese adolescents; and (b) to analyze the differences in outcomes based on gender and baseline physical activity. Seventy-three overweight and obese adolescents (mean age: 13.44 ± 1.12 years) were randomly assigned to an experimental group (EG) or control group (CG). The EG used a physical activity wearable for 12 weeks. Both groups were assessed before and after the intervention. Regarding primary outcomes, the EG showed an increase in physical activity (p = 0.048) and reductions in body mass index (p = 0.007), fat mass (p < 0.001), and sum of 3 skinfolds (p = 0.002), with moderate-to-large effect sizes (η2 > 0.09). According to the secondary outcomes, improvements in physical fitness were limited, with increases observed only in abdominal muscular endurance, and these changes were also present in the CG. Subgroup analyses showed that females and adolescents with low baseline physical activity experienced greater benefits, particularly in fat-related variables (p < 0.001–0.037), with large effect sizes (η2 > 0.14). Additionally, adolescents with greater exposure to the wearable-based intervention showed more consistent improvements in fat-related outcomes (p < 0.001–0.032), with large effect sizes (η2 > 0.25). In conclusion, a wearable-based intervention promoted through physical education classes may contribute to meaningful improvements in body composition, particularly among females and previously inactive adolescents who are overweight or obese. However, effects on physical fitness and psychological well-being were limited, highlighting the importance of intervention design, adherence, and complementary motivational strategies.
Work on the relationship between regulation and bribery suggests that bribes are a joint function of the demands of bureaucrats and the supply of business managers willing to pay them. However, due to biases in measurement, empirical work has concentrated on country-level, demand-side drivers, while research on factors that lead businesses to bribe remains theoretically rich but empirically underdeveloped. We contribute to the burgeoning work on the supply of bribery with a formal model that predicts poorly managed firms may strategically initiate bribes because resource constraints and/or poor service quality necessitate shortcuts in regulatory compliance. To test these theories, we present two connected studies. The first demonstrates that the predictions are consistent with cross-national business survey data. The second, a field experiment, randomly assigned firms to management training courses in Vietnam. Using detailed accounting books, we find that firms in the management course paid monthly bribes less than one-fifth the size ($227 less) of the placebo group, and, consistent with our predictions, had higher levels of regulatory compliance.
Emerging evidence supports improvement of perinatal outcomes (HIE and neonatal acidosis) following the implementation of physiological interpretation of CTG. Some studies have also reported a reduction in the rate of emergency intrapartum caesarean sections for suspected fetal compromise. Unlike guidelines based on pattern recognition classifying CTG traces into ‘normal, suspicious and pathological’, implementation of physiological CTG guidelines that stipulate the recognition of different types of fetal hypoxia has been shown to correlate with the pattern of injury seen on the neonatal MRI scan of the brain. Based on published evidence, It is possible to predict the NEXT change on the CTG change (ABCDE) in a gradually evolving hypoxic stress by applying knowledge of fetal physiological responses, which enables clinicians not only to anticipate the next expected change on the CTG trace, but also to institute timely and appropriate action to prevent perinatal brain injuries and deaths.
Cardiotocograph interpretation based on pattern recognition has a poor positive predictive value for intrapartum hypoxia and a high false-positive rate. Only about 40–60% of fetuses with a CTG classified as abnormal by NICE guidelines have confirmed metabolic acidaemia on cord gases after birth. The rates of perinatal deaths, hypoxic encephalopathy and cerebral palsy have remained stable, whereas the rate of operative deliveries among fetuses monitored using CTG has been continuously increasing. There were over 25 different clinical guidelines, each employing different classification systems and indications for continuous electronic fetal heart rate (FHR) monitoring until the mid-1980s. Therefore, the older clinical trials did not use standardized criteria for continuous electronic FHR monitoring. A more individualized care by prelabour risk assesment and a physiological approach may be beneficial in terms of maternal and fetal outcome
Individuals with severe mental illnesses (SMIs) experience anxiety that impairs functioning and quality of life. This cluster randomized trial evaluated exposure-based cognitive behavioral therapy (ebCBT) integrated into assertive community treatment (ACT) teams to reduce anxiety.
Methods
Fifteen ACT teams were allocated to ebCBT + ACT (k = 8, n = 50) or ACT-only (k = 7, n = 43). The intervention followed four steps: situation identification, four-component analysis (behavior, cognition, emotion, physical symptoms), psychoeducation, and graded exposure. Staff received 50 h training and bimonthly supervision over 12 months. Co-primary outcomes were trait and social anxiety; secondary outcomes were psychiatric symptoms, functioning, quality of life, and recovery.
Results
The ebCBT + ACT group showed significant improvements in State–Trait Anxiety Inventory–Trait scores at 12 months (AMD = −5.30, 95% CI = −8.71 to −1.90, p = 0.002, d = −0.64) and 18 months (AMD = −7.22, 95% CI = −12.1 to −2.34, p = 0.004, d = −0.60). Brief Fear of Negative Evaluation scores showed near-significant improvement at 18 months (AMD = −3.70, 95% CI = −7.44 to 0.04, p = 0.052, d = −0.40). Secondary outcomes, including global functioning, recovery, and quality of life, also improved. Cost-effectiveness analyses indicated favorable cost-effectiveness for anxiety outcomes.
Conclusions
Embedding ebCBT within ACT services may reduce anxiety-related fear and avoidance and enhance recovery-related outcomes in individuals with SMI. These findings support the feasibility and clinical value of integrating structured psychological interventions into intensive community-based outreach services.
Patients with advanced liver disease (ALD) may benefit from the early integration of supportive care toward the end of life. Engagement with supportive and palliative care could decrease disease-related distress and alleviate pressure on the health system. This trial evaluated whether a transdisciplinary supportive care model, aligned with standard care and guided by patient- and carer-identified needs, could optimize health service utilization and outcomes for patients and carers living with ALD.
Methods
A 90-day multicenter, mixed-methods pilot randomized controlled trial, “Liver Life,” was conducted at 1 regional tertiary and 1 rural referral hospital in NSW, Australia. The intervention group received patient- and carer-centered supportive care interventions during 5 scheduled allied health-led outpatient visits, alongside ongoing standard care. This paper reports health service utilization and associated costs, and participant-reported measures.
Results
Over 90 days, emergency department presentations were reduced by 66% (incidence rate ratio: 0.34 [0.13–0.80]), and hospital admissions by 64% (incidence rate ratio: 0.36 [0.12–0.98]). Intervention patients were 5 times more likely to have more days “alive and out of hospital” than those receiving standard care alone (odds ratio: 5.34 [1.43–22.1]). As a result, the overall cost of health service use per intervention patient was less than half that of standard care alone.
Significance of results
The Liver Life trial demonstrated the feasibility, acceptability, efficacy, and potential cost savings of a transdisciplinary supportive care model for ALD patients and their caregivers. Future research should investigate the sustainability and transferability of this approach to other populations and other chronic diseases.
Psychedelic-assisted psychotherapy has shown potential for psychiatric disorders. However, the magnitude of symptom change in control groups remains poorly understood. We aim to evaluate within-group effects in control groups and compare them to treatment groups in psychedelic trials.
Methods
A systematic search was conducted up to 1 July 2025. The study protocol was preregistered in PROSPERO (CRD420251111853).
Results
Fourteen randomized controlled trials (n = 643) were included. Direct between-arm meta-analyses showed greater symptom reductions in treatment compared with control across outcomes, including depressive symptoms (number of study arms [k] = 13; SMD = −0.82; 95% CI = −1.17, −0.47; I2 = 60.1%), posttraumatic stress disorder (PTSD) symptoms (k = 10; SMD = −0.89; 95% CI = −1.14, −0.65; I2 = 0%), and anxiety symptoms (k = 5; SMD = −0.66; 95% CI = −0.94, −0.38; I2 = 0%). Subgroup analyses showed limited evidence that effects differed by placebo type for depressive or PTSD symptoms. Descriptive within-group analyses indicated symptom reductions from baseline in both control and treatment groups, with larger within-group improvements observed in treatment groups across outcomes; notably, larger within-group reductions in PTSD symptoms were observed in inactive placebo groups. Sensitivity analyses showed consistent results.
Conclusions
Control groups in psychedelic trials demonstrated substantial symptom improvement, which may reflect non-specific trial factors (including expectancy and concurrent psychotherapy). These findings emphasize the importance of robust control conditions in psychedelic research and the need for nuanced interpretation of treatment effects.
Major depressive disorder (MDD) exhibits significant heterogeneity in treatment responses, necessitating multiple pharmacological trials to achieve therapeutic success. Pharmacogenetic (PGx) testing has emerged as a promising tool to personalize antidepressant (AD) treatments, though its clinical utility remains controversial.
Methods
This study assessed the efficacy of PGx-guided treatment in improving clinical outcomes among 287 MDD patients within the PANDORA trial, a prospective randomized, participant- and rater-blinded, controlled trial conducted in Italy. A total of 268 adults with moderate-to-severe MDD were randomized into Treated as Usual (TAU) or Treated with Genetic Test Guide (TGTG). Patients were assessed using the Hamilton Depression Rating Scale (HAM-D17), Beck Depression Inventory II (BDI-II), Beck Anxiety Inventory, MINI-ICF-APP for psychosocial functioning, and the UKU Side Effects Rating Scale, at baseline and at 4, 8, and 12 weeks.
Results
Both groups demonstrated significant symptom improvement over the 12-week period. No significant differences were observed between the groups in terms of response and remission rates, measured by HAM-D17 and BDI-II, at weeks 8 and 12. Notably, in the BDI-II symptom cluster analysis, significant differences were found only in neurovegetative symptoms, with TGTG patients showing greater improvement at the 4-week and 8-week follow-up visits. Among patients with severe baseline symptoms, those in the TGTG group exhibited greater symptom reduction and higher response rates at week 8.
Conclusions
These findings suggest that while PGx testing did not significantly improve overall treatment efficacy in MDD compared to TAU, it may offer benefits in managing patients with severe symptoms and specific symptom domains.
Embolization of the middle meningeal artery (EMMA) is an emerging neuroendovascular therapy for chronic subdural hematoma (CSDH). Recently, three landmark randomized trials (MAGIC-MT, EMBOLISE, STEM) were published. We performed a systematic review and meta-analysis of randomized trials for EMMA.
Methods:
The authors systematically searched MEDLINE, EMBASE, Cochrane and ClinicalTrials.gov (National Library of Medicine) through March 6, 2025. Prospective randomized controlled trials comparing EMMA and standard care versus standard care alone were included. Primary (symptomatic recurrence, symptomatic progression, major adverse event, neurological deterioration, stroke, myocardial infarction and/or death) and secondary endpoints (serious adverse events, stroke, death from any cause and death from neurological causes) were analyzed. The review was registered on PROSPERO (CRD42024512049).
Results:
Four randomized trials (Lam et al., MAGIC-MT, EMBOLISE, STEM) were meta-analyzed. A total of 1468 patients were included. The primary endpoint was met in 50 patients (7.5%) in the EMMA group compared to 106 patients (15.5%) in the control group (RR 0.49 [95% CI, 0.36–0.67]; P < 0.001, I2 = 0.0%), with a number needed to treat of 13. There was no difference in serious adverse events (RR 0.88 [95% CI 0.68–1.13]; P = 0.31, I2 = 50.2%), stroke (RR 1.51 [95% CI 0.46–5.01]; P = 0.50, I2 = 0.0%), death from any cause (RR 1.03 [95% CI 0.37–2.85]; P = 0.95, I2 = 58.1%) or death from neurological causes (RR 1.29 [95% CI 0.53–3.09]; P = 0.58, I2 = 25.4%).
Conclusions:
EMMA is effective in reducing symptomatic recurrence, progression and/or reoperation among patients with CSDH and is not associated with a greater incidence of serious adverse events, stroke or death.
Abstract screening, a labor-intensive aspect of systematic review, is increasingly challenging due to the rising volume of scientific publications. Recent advances suggest that generative large language models like generative pre-trained transformer (GPT) could aid this process by classifying references into study types such as randomized-controlled trials (RCTs) or animal studies prior to abstract screening. However, it is unknown how these GPT models perform in classifying such scientific study types in the biomedical field. Additionally, their performance has not been directly compared with earlier transformer-based models like bidirectional encoder representations from transformers (BERT). To address this, we developed a human-annotated corpus of 2,645 PubMed titles and abstracts, annotated for 14 study types, including different types of RCTs and animal studies, systematic reviews, study protocols, case reports, as well as in vitro studies. Using this corpus, we compared the performance of GPT-3.5 and GPT-4 in automatically classifying these study types against established BERT models. Our results show that fine-tuned pretrained BERT models consistently outperformed GPT models, achieving F1-scores above 0.8, compared to approximately 0.6 for GPT models. Advanced prompting strategies did not substantially boost GPT performance. In conclusion, these findings highlight that, even though GPT models benefit from advanced capabilities and extensive training data, their performance in niche tasks like scientific multi-class study classification is inferior to smaller fine-tuned models. Nevertheless, the use of automated methods remains promising for reducing the volume of records, making the screening of large reference libraries more feasible. Our corpus is openly available and can be used to harness other natural language processing (NLP) approaches.
Psychosocial interventions for people with mental illness are increasingly focusing on facilitating recovery and self-care. Despite evidence from Europe on the short-term effects of recovery self-planning programs for people discharged from crisis resolution teams, similar programs and supporting evidence in other countries or healthcare contexts are lacking, particularly regarding cultural adaptation and long-term assessment. This randomized controlled trial compared a 4-month peer-facilitated, recovery-focused self-illness management (Peer-RESIM) program for Chinese adults with first-episode psychosis with psychoeducation (PE) and treatment as usual (TAU).
Methods
Patients (N = 198) were recruited from four Integrated Community Centres for Mental Wellness in Hong Kong and randomly assigned to the Peer-RESIM, PE, or TAU group (66/group). The primary outcomes were recovery and functioning levels; the secondary outcomes were psychotic symptoms, problem-solving ability, rehospitalization rate, and service satisfaction. Assessments were conducted at baseline and immediate, 9, and 18 months postintervention.
Results
The generalized estimating equation test revealed that the Peer-RESIM group reported significantly greater improvements in recovery, functioning, problem-solving ability, psychotic symptoms, average duration of rehospitalizations, and service satisfaction (p = 0.01–0.04, small to large effect sizes) than the TAU group at all three posttests and the PE group at 18 months postintervention.
Conclusions
The Peer-RESIM can enhance long-term recovery and self-care in adults with early-stage psychosis.
The optimal duration for maintaining antidepressant treatment in individuals with obsessive-compulsive disorder (OCD) who achieve symptom stabilization remains unclear.
Methods
This systematic review and pairwise meta-analysis of double-blind randomized placebo-controlled trials (DBRPCTs) compared antidepressant maintenance and antidepressant discontinuation groups in terms of relapse rate at each DBRPCT study endpoint (primary outcome), OCD symptom improvement, all-cause discontinuation, and adverse event-related discontinuation. Furthermore, relapse rates at 4, 8, 12, 16, 20, and 24 weeks were compared between the groups. Risk ratios (RRs) with 95% confidence intervals (CIs) were calculated. The absolute risk reduction (ARR) and number needed to treat to benefit (NNTB) for relapse rates were also estimated.
Results
Nine trials (n = 1084; mean age: 32.8 years; proportion of males: 53.3%) were included. The antidepressant maintenance group had lower relapse rates at each DBRPCT study endpoint (RR [95% CI] = 0.53 [0.42–0.68]; ARR = 21.0%; NNTB = 5) and lower all-cause and adverse event-related discontinuation rates than the antidepressant discontinuation group. The maintenance group also exhibited lower relapse rates at 4 weeks (RR [95% CI] = 0.47 [0.31–0.70]; ARR: not significant; NNTB: not significant), 8 weeks (0.42 [0.31–0.57]; 12.0%; 8), 12 weeks (0.43 [0.32–0.56]; 18.0%; 6), 16 weeks (0.41 [0.32–0.52]; 25.0%; 4), 20 weeks (0.43 [0.34–0.53]; 26.0%; 4), and 24 weeks (0.42 [0.33–0.52]; 27.0%; 4) than the discontinuation group. Moreover, the maintenance group outperformed the discontinuation group regarding OCD symptom improvement.
Conclusions
Individuals with OCD may benefit from continued antidepressant treatment, provided that it is well tolerated.
The management of persistent physical symptoms poses a challenge in many healthcare settings, including primary care. Psychological treatments that involve exposure have shown promise for several conditions where patients suffer from persistent physical symptoms and unwanted responses to these. It is unclear, however, to what extent exposure therapy has effects beyond existing routine care interventions and who benefits the most.
Methods
A randomized controlled trial at a primary care center in Stockholm, Sweden compared 10 weeks of internet-delivered exposure therapy (n = 80) to healthy lifestyle promotion (HLP; n = 81) for patients bothered by at least one persistent physical symptom. The primary outcome was the mean reduction in subjective somatic symptom burden (Patient Health Questionnaire 15) as measured week-by-week up to the post-treatment assessment. Secondary outcomes included symptom preoccupation, anxiety, depression symptoms, and functional impairment.
Results
Patients contributed 1544 datapoints during treatment. The primary analysis showed no significant advantage of exposure therapy versus HLP in the reduction of mean somatic symptom burden (d = 0.14; p = 0.220). In secondary analyses, exposure showed superiority in the reduction of symptom preoccupation (d = 0.31; p = 0.033) but not anxiety, depression symptoms, or functional impairment. A higher somatic symptom burden or symptom preoccupation before treatment was predictive of a larger advantage of exposure versus HLP.
Conclusions
Exposure therapy does not appear to show noteworthy average benefit over HLP, with the exception of symptom preoccupation. Substantial benefits are seen in patients with very high symptom burden or symptom preoccupation.
Providing psychotherapy at 50 sessions in a year (starting twice weekly) led to faster and greater improvements in depression and personality functioning compared to 25 sessions, starting weekly for patients with depression and personality disorder (PD). This study reports long-term dosage effects at 18 and 24 months.
Methods
In a pragmatic, double-randomized clinical trial, 246 outpatients with depression and PD were assigned to (1) 25 or 50 sessions and (2) Short-term Psychodynamic Supportive Psychotherapy (SPSP) or Schema Therapy (ST). Depression severity was assessed with the Beck Depression Inventory-II. Secondary outcomes included diagnostic remission of depression (MINI-plus), PD (SCID-II/SCID-5-P), and treatment-specific measures. Intention-to-treat analyses were conducted.
Results
At 18 and 24 months, BDI-II means did not differ between dosage groups (19.0 for 25 sessions versus 19.1 for 50 sessions; d = −0.01; 95% CI = −0.35-0.37, p = 0.96). The lower-dosage group improved during follow-up (−2.6 BDI points, p = 0.031), which may be partly attributed to additional therapy received by a subgroup. Remission rates at 24 months were 66% for depression and 76% for PD, with no differences between conditions.
Conclusions
Higher psychotherapy dosage led to faster initial improvements, but long-term outcomes were not superior to those achieved with a lower dosage. These results should be interpreted with caution, as unregulated treatment during follow-up reduced the power to detect significant dosage effects. Both SPSP and ST provide viable alternatives to treatments focused solely on depression.
Adolescents are at a heightened risk of suicide reattempts following hospital discharge, but few evidence-based interventions exist. This study evaluated the efficacy of the self-awareness of mental health (SAM) program combined with treatment as usual (TAU) versus TAU alone in reducing reattempts among high-risk adolescents.
Methods
A randomized clinical trial was conducted across nine Spanish hospitals (January 2021–March 2024) with 261 adolescents (12–17 years) who had attempted suicide within the last 15 days. Participants were assigned to SAM + TAU (n=128) or TAU (n=133), with 12-month follow-up. The primary outcome was suicide reattempts within 12 months; secondary analyses examined time to reattempt and associated risk factors.
Results
After 12-months, no significant differences were found in reattempt rates [22.6% (SAM) versus 27.8% (TAU); OR=0.610, 95%CI (0.321–1.151), p=0.127] or time to reattempt [HR=0.606, 95%CI (0.390–1.021), p=0.060]. In SAM, attentional impulsivity emerged as a significant risk factor [HR=1.126, 95% CI (1.004–1.263), p=0.043], while nonplanning impulsivity was protective [HR=0.878, 95%CI (0.814–0.948), p<0.001]. In TAU, increased suicide risk was linked to suicidal intentionality [HR=1.341, 95%CI (1.009–1.782), p=0.044] and more prior attempts [HR=1.230, 95%CI (1.039–1.457), p=0.016]. Conversely, fewer psychiatric diagnoses emerged as a protective factor [HR=0.821, 95%CI (0.677–0.996), p=0.045].
Conclusions
While no significant differences were found between groups, SAM identified important psychological factors influencing suicide risk. These findings provide a foundation for targeted interventions to prevent reattempts in adolescents.
The analysis of data from experiments in economics routinely involves testing multiple null hypotheses simultaneously. These different null hypotheses arise naturally in this setting for at least three different reasons: when there are multiple outcomes of interest and it is desired to determine on which of these outcomes a treatment has an effect; when the effect of a treatment may be heterogeneous in that it varies across subgroups defined by observed characteristics and it is desired to determine for which of these subgroups a treatment has an effect; and finally when there are multiple treatments of interest and it is desired to determine which treatments have an effect relative to either the control or relative to each of the other treatments. In this paper, we provide a bootstrap-based procedure for testing these null hypotheses simultaneously using experimental data in which simple random sampling is used to assign treatment status to units. Using the general results in Romano and Wolf (Ann Stat 38:598–633, 2010), we show under weak assumptions that our procedure (1) asymptotically controls the familywise error rate—the probability of one or more false rejections—and (2) is asymptotically balanced in that the marginal probability of rejecting any true null hypothesis is approximately equal in large samples. Importantly, by incorporating information about dependence ignored in classical multiple testing procedures, such as the Bonferroni and Holm corrections, our procedure has much greater ability to detect truly false null hypotheses. In the presence of multiple treatments, we additionally show how to exploit logical restrictions across null hypotheses to further improve power. We illustrate our methodology by revisiting the study by Karlan and List (Am Econ Rev 97(5):1774–1793, 2007) of why people give to charitable causes.
Neurocysticercosis (NCC) is a neglected parasitic disease that causes neurological symptoms. However, little is known about the long-term impact of this infection on health. We contacted participants from a randomized controlled trial on albendazole treatment for NCC in Ecuador 12 years after trial completion (14–16 years after NCC diagnosis) about their long-term health. We described the symptoms experienced post-trial and investigated if albendazole treatment, the presence of calcified NC cysts, and cysts in extraparenchymal locations at last imaging predicted symptoms. All analyses were standardized by adjusting for participant age and sex. In the 12 years post-trial, 52.1% reported some health problem, with 48.9% reporting neurological symptoms such as seizures (16.6% of participants) and headaches (26.6% of participants). At the end of the trial, 11 participants had complete NCC cyst resolution, of whom 3 (27.3%) reported seizures and 1 (9.1%) reported headaches post-trial. Twenty-four participants had only calcified cysts (residual calcification sometimes left after the parasite dies) by trial end, of whom 8 (33.3%) reported seizures and 9 (37.5%) headaches post-trial. None of the predictors examined were significantly associated with long-term symptoms. A high proportion of people diagnosed with NCC continue experiencing symptoms years after treatment, and while slightly fewer people experienced continued symptoms in the albendazole group, the difference was not statistically significant. Eleven participants with no live parasites at last imaging (8 with residual calcifications) had seizures post-trial, which may be unprovoked and an indication of epilepsy risk. Research is urgently needed to improve NCC treatment to mitigate long-term outcomes.