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Nevin Manimala Statistics

Patterns of Antihypertensive Medication Use in the First 2 Years Post Partum

JAMA Netw Open. 2024 Aug 1;7(8):e2426394. doi: 10.1001/jamanetworkopen.2024.26394.

ABSTRACT

IMPORTANCE: Women who had a hypertensive disorder of pregnancy (HDP) have a well-documented risk of chronic hypertension within a few years of delivery, but management of postpartum hypertension among these women remains inconsistent.

OBJECTIVE: To assess the incidence of initiation of antihypertensive medication use in the first 2 years after delivery by HDP status and antenatal antihypertensive medication use.

DESIGN, SETTING, AND PARTICIPANTS: This Danish register-based cohort study used data from women with at least 1 pregnancy lasting 20 or more gestational weeks (only the first pregnancy in the period was considered) who delivered from January 1, 1995, to December 31, 2018. Statistical analysis was conducted from October 2022 to September 2023.

EXPOSURE: Hypertensive disorders of pregnancy.

MAIN OUTCOMES AND MEASURES: Cumulative incidences and hazard ratios of initiating antihypertensive medication use within 2 years post partum (5 postpartum time intervals) by HDP status and antenatal medication use.

RESULTS: The cohort included 784 782 women, of whom 36 900 (4.7% [95% CI, 4.7%-4.8%]) had an HDP (HDP: median age at delivery, 29.1 years [IQR, 26.1-32.7 years]; no HDP: median age at delivery, 29.0 years [IQR, 25.9-32.3 years]). The 2-year cumulative incidence of initiating postpartum antihypertensive treatment ranged from 1.8% (95% CI, 1.8%-1.8%) among women who had not had HDPs to 44.1% (95% CI, 40.0%-48.2%) among women with severe preeclampsia who required antihypertensive medication during pregnancy. Most women who required postpartum antihypertensive medication after an HDP initiated use within 3 months of delivery (severe preeclampsia, 86.6% [95% CI, 84.6%-89.4%]; preeclampsia, 75.3% [95% CI, 73.8%-76.2%]; and gestational hypertension, 75.1% [95% CI, 72.9%-77.1%]). However, 13.4% (95% CI, 11.9%-14.1%) of women with severe preeclampsia, 24.7.% (95% CI, 24.0%-26.0%) of women with preeclampsia, 24.9% (95% CI, 22.5%-27.5%) of women with gestational hypertension, and 76.7% (95% CI, 76.3%-77.1%) of those without an HDP first filled a prescription for antihypertensive medication more than 3 months after delivery. Women with gestational hypertension had the highest rate of initiating medication after more than 1 year post partum, with 11.6% (95% CI, 10.0%-13.2%) starting treatment after this period. Among women who filled a prescription in the first 3 months post partum, up to 55.9% (95% CI, 46.2%-66.1%) required further prescriptions more than 3 months post partum, depending on HDP status and antenatal medication use.

CONCLUSIONS AND RELEVANCE: In this cohort study of postpartum women, the incidence of initiation of postnatal antihypertensive medication use varied by HDP status, HDP severity, and antenatal antihypertensive medication use. Up to 24.9% of women initiated antihypertensive medication use more than 3 months after an HDP, with up to 11.6% initiating treatment after 1 year. Routine postpartum blood pressure monitoring might prevent diagnostic delays in initiation of antihypertensive medication use and improve cardiovascular disease prevention among women.

PMID:39110457 | DOI:10.1001/jamanetworkopen.2024.26394

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Consistency of Delusion Themes Across First and Subsequent Episodes of Psychosis

JAMA Psychiatry. 2024 Aug 7. doi: 10.1001/jamapsychiatry.2024.2040. Online ahead of print.

ABSTRACT

IMPORTANCE: Despite growing interest in the phenomenology of delusions in psychosis, at present little is known about their content and evolution over time, including whether delusion themes are consistent across episodes.

OBJECTIVE: To examine the course of delusions and thematic delusion content across relapse episodes in patients presenting to an early intervention service for psychosis.

DESIGN, SETTING, AND PARTICIPANTS: This longitudinal, observational study used clinical data systematically collected from January 2003 to March 2018 from a cohort of consenting patients with affective or nonaffective first-episode psychosis, followed up naturalistically for up to 2 years in an early intervention service for psychosis in Montréal, Quebec, Canada. Data included the thematic content and severity of delusions (scores ≥3 using the Scale for the Assessment of Positive Symptoms) and associated psychotic and nonpsychotic symptoms, both across an initial episode and, in the event of remission, a potential relapse. Data were analyzed from September 2021 to February 2023.

EXPOSURE: An early intervention service for psychosis, organized around intensive case management and a multidisciplinary team approach, which observed each patient for up to 2 years of care.

MAIN OUTCOMES AND MEASURES: The primary outcome was positive symptom relapse and remission, including the presence and content of delusions, which was coded per the Scale for the Assessment of Positive Symptoms and accepted definitions. The main statistical measures included repeated paired-sample t tests and binary logistic regression analyses.

RESULTS: Of 636 consenting patients, mean (SD) age was 23.8 (4.75) years; 191 patients were female, 444 were male, and 1 patient was nonbinary. Remission rates were high, and relapse rates were relatively low: 591 individuals had baseline delusions, of which 558 (94.4%) achieved remission. Of these 558 patients, only 182 (32.6%) had a subsequent relapse to a second or later episode of psychosis. Of the 182 patients who did relapse, however, a large proportion (115 [63.2%]) reported threshold-level delusions. Of these 115, 104 patients (90.4%) had thematic delusion content consistent with that reported during the index (first) episode. Those who relapsed with delusions had fewer delusion themes present during subsequent episodes of psychosis compared with the index episode and lower levels of other psychotic and nonpsychotic symptoms.

CONCLUSIONS AND RELEVANCE: Specialized early intervention services for psychosis can achieve high rates of sustained remission. However, in this study, the minority of individuals with delusions who later relapsed experienced similar delusion themes during subsequent episodes. These findings raise important considerations for the conceptualization of delusions and have clinical implications for trajectories of illness and care.

PMID:39110444 | DOI:10.1001/jamapsychiatry.2024.2040

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A Vaping Cessation Text Message Program for Adolescent E-Cigarette Users: A Randomized Clinical Trial

JAMA. 2024 Aug 7. doi: 10.1001/jama.2024.11057. Online ahead of print.

ABSTRACT

IMPORTANCE: E-cigarettes are the most commonly used tobacco product among adolescents. Despite known harms of nicotine exposure among teens, there are no empirically tested vaping cessation interventions.

OBJECTIVE: To compare the effectiveness of a text message program for nicotine vaping cessation among adolescents with assessment-only control.

DESIGN, SETTING, AND PARTICIPANTS: A parallel, 2-group, double-blind, individually randomized clinical trial with follow-ups at 1 and 7 months after randomization was conducted from October 1, 2021, to October 18, 2023. Participants were recruited via social media ads; the intervention was delivered via text message; and assessments were completed online or by telephone. Eligible individuals were US residents aged 13 to 17 years who reported past 30-day e-cigarette use, were interested in quitting within 30 days, and owned a mobile phone with an active text message plan. To optimize study retention, all participants received monthly assessments via text message about e-cigarette use.

INTERVENTIONS: Assessment-only controls (n = 744) received only study retention text messages. Intervention participants (n = 759) also received an automated, interactive text message program for vaping cessation that delivers cognitive and behavioral coping skills training and social support.

MAIN OUTCOMES AND MEASURES: The primary outcome was self-reported 30-day point-prevalence abstinence from vaping at 7 months analyzed as intention-to-treat, with missingness coded as vaping.

RESULTS: Among n = 1503 adolescents randomized, average age was 16.4 (SD, 0.8) years. The sample was 50.6% female, 42.1% male, and 7.4% nonbinary/other; 10.2% Black/African American, 62.6% White, 18.5% multiracial, and 8.7% another race; 16.2% Hispanic; 42.5% sexual minority; and 76.2% vaped within 30 minutes of waking. The 7-month follow-up rate was 70.8%. Point-prevalence abstinence rates were 37.8% (95% CI, 34.4%-41.3%) among intervention participants and 28.0% (95% CI, 24.9%-31.3%) among control participants (relative risk, 1.35 [95% CI, 1.17-1.57]; P < .001). No baseline variables moderated the treatment-outcome relationship. There was no evidence that adolescents who quit vaping transitioned to combustible tobacco products.

CONCLUSIONS AND RELEVANCE: A tailored, interactive text message intervention increased self-reported vaping cessation rates among adolescents recruited via social media channels.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04919590.

PMID:39110436 | DOI:10.1001/jama.2024.11057

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Long-Term Effectiveness and Reasons for Discontinuation of Dupilumab in Patients With Atopic Dermatitis

JAMA Dermatol. 2024 Aug 7. doi: 10.1001/jamadermatol.2024.2517. Online ahead of print.

ABSTRACT

IMPORTANCE: Limited data are available on the long-term effectiveness and safety of dupilumab for atopic dermatitis (AD) in daily practice.

OBJECTIVE: To evaluate clinical effectiveness and reasons for discontinuation of dupilumab treatment in children, adults, and older adults with AD with up to 5 years of treatment in daily practice.

DESIGN, SETTING, AND PARTICIPANTS: This prospective multicenter cohort study was conducted using the BioDay registry (4 academic and 10 nonacademic hospitals in the Netherlands) to identify patients with AD of all ages who were treated with dupilumab between October 2017 and December 2022.

MAIN OUTCOMES AND MEASURES: Clinical effectiveness was evaluated by the Eczema Area and Severity Index (EASI), Investigator Global Assessment (IGA), and numeric rating scale (NRS) for pruritus, stratified by children (<18 years), adults (18-64 years), and older adults (≥65 years). In addition, time to response, treatment responders, EASI subscores, second treatment episodes, and thymus- and activation-related chemokine and eosinophil levels were assessed. For patients who discontinued dupilumab, the reason for discontinuation was evaluated.

RESULTS: In total, 1286 patients with AD (median [IQR] age, 38 [26-54] years; 726 [56.6%] male) were treated with dupilumab, including 130 children, 1025 adults, and 131 older adults. The median (IQR) follow-up time was 87.5 (32.0-157.0) weeks. Most patients maintained controlled AD, with EASI of 7 or lower and NRS for pruritus of 4 or lower varying between 78.6% and 92.3% and 72.2% and 88.2% for up to 5 years of treatment, respectively, while up to 70.5% of all patients prolonged the dosing interval to mostly 300 mg every 3 or 4 weeks. Mean EASI and NRS for pruritus were 2.7 (95% CI, 1.2-4.2) and 3.5 (95% CI, 2.7-4.3), respectively, after 5 years of treatment. Statistically significant differences between age groups were found over time for EASI and IGA; however, differences were rather small (week 52: EASI, 0.3-1.6; IGA, 0.12-0.26). No statistically significant differences between age groups were found for NRS for pruritus. Median thymus- and activation-related chemokine levels considerably decreased from 1751 pg/mL (95% CI, 1614-1900 pg/mL) to 390 pg/mL (95% CI, 368-413 pg/mL) after 6 months of treatment and remained low. Median eosinophil levels temporarily increased up to week 16, with a subsequently statistically significant decrease over time. In total, 306 patients (23.8%) discontinued dupilumab after a median (IQR) of 54.0 (29.0-110.00) weeks, with adverse events among 98 patients (7.6%) and ineffectiveness among 85 patients (6.6%) as the most frequently reported reasons. Forty-one patients (3.2%) restarted dupilumab, and most of these patients recaptured response.

CONCLUSIONS AND RELEVANCE: In this cohort study with up to 5 years of follow-up, dupilumab maintained its clinical effectiveness, while two-thirds of patients tapered to a dosing interval of every 3 or 4 weeks. Treatment was discontinued in 23.8% of patients mainly due to adverse events and/or ineffectiveness.

PMID:39110432 | DOI:10.1001/jamadermatol.2024.2517

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High segregation and diminished global integration in large-scale brain functional networks enhances the perceptual binding of cross-modal stimuli

Cereb Cortex. 2024 Aug 1;34(8):bhae323. doi: 10.1093/cercor/bhae323.

ABSTRACT

Speech perception requires the binding of spatiotemporally disjoint auditory-visual cues. The corresponding brain network-level information processing can be characterized by two complementary mechanisms: functional segregation which refers to the localization of processing in either isolated or distributed modules across the brain, and integration which pertains to cooperation among relevant functional modules. Here, we demonstrate using functional magnetic resonance imaging recordings that subjective perceptual experience of multisensory speech stimuli, real and illusory, are represented in differential states of segregation-integration. We controlled the inter-subject variability of illusory/cross-modal perception parametrically, by introducing temporal lags in the incongruent auditory-visual articulations of speech sounds within the McGurk paradigm. The states of segregation-integration balance were captured using two alternative computational approaches. First, the module responsible for cross-modal binding of sensory signals defined as the perceptual binding network (PBN) was identified using standardized parametric statistical approaches and their temporal correlations with all other brain areas were computed. With increasing illusory perception, the majority of the nodes of PBN showed decreased cooperation with the rest of the brain, reflecting states of high segregation but reduced global integration. Second, using graph theoretic measures, the altered patterns of segregation-integration were cross-validated.

PMID:39110411 | DOI:10.1093/cercor/bhae323

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The proactive and reactive mechanisms of learned spatial suppression

Cereb Cortex. 2024 Aug 1;34(8):bhae333. doi: 10.1093/cercor/bhae333.

ABSTRACT

Selection history refers to the notion that previous allocations of attention or suppression have the potential to elicit lingering and enduring selection biases that are isolated from goal-driven or stimulus-driven attention. However, in the singleton detection mode task, manipulating the selection history of distractors cannot give rise to pure proactive inhibition. Therefore, we employed a combination of a working memory task and a feature search mode task, simultaneously recording cortical activity using EEG, to investigate the mechanisms of suppression guided by selection history. The results from event-related potential and reaction times showed an enhanced inhibitory performance when the distractor was presented at the high-probability location, along with instances where the target appeared at the high-probability location of distractors. These findings demonstrate that a generalized proactive inhibition bias is learned and processed independent of cognitive resources, which is supported by selection history. In contrast, reactive rejection toward the low-probability location was evident through the Pd component under varying cognitive resource conditions. Taken together, our findings indicated that participants learned proactive inhibition when the distractor was at the high-probability location, whereas reactive rejection was involved at low-probability location.

PMID:39110410 | DOI:10.1093/cercor/bhae333

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Inference for restricted mean survival time as a function of restriction time under length-biased sampling

Stat Methods Med Res. 2024 Aug 7:9622802241267812. doi: 10.1177/09622802241267812. Online ahead of print.

ABSTRACT

The restricted mean survival time (RMST) is often of direct interest in clinical studies involving censored survival outcomes. It describes the area under the survival curve from time zero to a specified time point. When data are subject to length-biased sampling, as is frequently encountered in observational cohort studies, existing methods cannot estimate the RMST for various restriction times through a single model. In this article, we model the RMST as a continuous function of the restriction time under the setting of length-biased sampling. Two approaches based on estimating equations are proposed to estimate the time-varying effects of covariates. Finally, we establish the asymptotic properties for the proposed estimators. Simulation studies are performed to demonstrate the finite sample performance. Two real-data examples are analyzed by our procedures.

PMID:39110407 | DOI:10.1177/09622802241267812

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Is a Problem-Solving Intervention with Workplace Involvement for Employees on Sickness Absence Due to Common Mental Disorders More Effective, than Care as Usual, in Reducing Sickness Absence Days? Results of a Cluster-Randomised Controlled Trial in Primary Health Care

J Occup Rehabil. 2024 Aug 7. doi: 10.1007/s10926-024-10229-4. Online ahead of print.

ABSTRACT

PURPOSE: The aim was to evaluate the effectiveness of a problem-solving intervention with workplace involvement (PSI-WPI) added to care as usual (CAU) in reducing sickness absence days among employees with common mental disorders compared to CAU alone in Swedish primary health care on a monthly basis over 18-months follow-up.

METHODS: We conducted a cluster-randomised controlled trial including 197 employees blinded to allocation (85 PSI-WPI and 112 CAU). As sickness absence data was skewed and over-dispersed, generalised estimating equations was used to enable a comparison between the intervention and control group for each month of the follow-up period.

RESULTS: The median number of sickness absence days over the 18-month follow-up was 78 days, inter-quartile range (IQR) 18-196 for employees receiving PSI-WPI and 64 days, IQR 18-161 for employees receiving CAU. The time x group generalised estimating equations analysis showed no statistically significant difference in sickness absence days per month.

CONCLUSION: The addition of a PSI-WPI to CAU was not more effective in reducing sickness absence days. This may be explained by the primary health care context, lack of specialisation in occupational health and the Swedish social insurance system with specific time limits.

TRIAL REGISTRATION: The trial was registered at ClinicalTrials.gov, identifier: NCT03346395 on January 12th, 2018.

PMID:39110387 | DOI:10.1007/s10926-024-10229-4

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Impact of thyroid function on coagulation and venous thromboembolism: a two-sample mendelian randomization study

J Thromb Thrombolysis. 2024 Aug 7. doi: 10.1007/s11239-024-03025-7. Online ahead of print.

ABSTRACT

OBJECTIVE: The association between thyroid function, coagulation and venous thromboembolism (VTE) has been reported in observational studies with conflicting findings. This study aimed to elucidate the causal effects of thyroid function on coagulation and VTE from a genetic perspective.

METHODS: Two sample Mendelian randomization analysis was conducted using summary statistics from genome-wide association studies in a European population. Coagulation status was associated with nine coagulation-related factors (F VIII, F IX, F XI, Fibrinogen, Antithrombin-III, Thrombomodulin, Plasminogen activator inhibitor-1, Protein C and Protein S). Inverse variance weighting with random effect method was used as the main analytic approach with MR-Egger, weighted median, simple mode and weighted mode methods serving as complements. Sensitivity analyses including heterogeneity test, horizontal pleiotropy test and leave-one-out analysis were conducted to further assess the reliability of results.

RESULTS: No genetic causal effects of thyroid function on VTE (including pulmonary embolism and deep venous thrombosis) were found. Genetically, hyperthyroidism was suggestively related to decreased Antithrombin-III (β: -0.04 [95% CI: -0.06 to – 0.01], p = 0.010) and Protein C (β: -0.03 [95% CI: -0.06 to 0.00], p = 0.045). No notable associations were observed between other thyroid function parameters and coagulation-related factors.

CONCLUSION: We provide suggestive genetic evidence supporting the causal effect of hyperthyroidism on decreased level of anticoagulant factors including Antithrombin-III and Protein C. However, whether this genetic causality could lead to clinically significant hypercoagulable state and increased risk of VTE in hyperthyroid population needs to be further addressed.

PMID:39110374 | DOI:10.1007/s11239-024-03025-7

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The first outbreak of Lumpy Skin Disease in Indonesia

Trop Anim Health Prod. 2024 Aug 7;56(7):237. doi: 10.1007/s11250-024-04067-y.

ABSTRACT

This study describes the first outbreak of Lumpy Skin Disease (LSD) in cattle in the Bengkalis region, Indonesia, and vaccination to control the epidemic. Data on the outbreak and vaccination was obtained from the local veterinary authority of the Bengkalis region, Indonesia. Climatological data was provided by the Meteorological, Climatological, and Geophysical Agency of Riau Province. Over the 5.5 months, the outbreak caused 10.4% (94/906) morbidity and 0.6% (6/906) mortality of cattle on infected farms. Temporally, three epidemic waves occurred during the outbreak period. Villages with cattle populations of > 150 animals (n = 36) were 5.3 times more likely to be infected with LSD compared to villages with smaller cattle populations (n = 107) (CI: 2.56-10.90, P < 0.01). The vaccination campaign covered 43.8% of cattle in villages within a 10 km radius of the cases. However, vaccination in villages with larger cattle populations (n = 29) was 0.63 less likely to cover 50% of the cattle populations compared to villages with smaller cattle populations (n = 41) (CI: 0.39-1.02, P = 0.05). By the time the first two and the major waves ceased, vaccination had covered only 0.0% (n = 6036), 27.8% (n = 6,036) and 9.7% (n = 5,697) of the cattle in the 10 km radius of the respective spatial clusters. The outbreak was statistically associated with rainfall and its interaction with temperature (F(2, 13) = 5.822, R2 = 0.47, P = 0.016). This study indicates that the LSD outbreak had low morbidity and mortality. Despite the low vaccination rate, the outbreak ceased, possibly due to plummeting of the abundance of insect vectors.

PMID:39110359 | DOI:10.1007/s11250-024-04067-y