FC13-10 - Frequency of prolonged qtc in children and adolescents hospitalized for psychiatric disorders: a nested case-control study

2011 ◽  
Vol 26 (S2) ◽  
pp. 1891-1891
Author(s):  
P. Manu ◽  
V. Figen ◽  
J. Harris ◽  
J.M. Kane ◽  
C.U. Correll
Keyword(s):  
Children And Adolescents ◽  
Psychiatric Disorders ◽  
Antipsychotic Drugs ◽  
Case Control Study ◽  
Qtc Prolongation ◽  
Control Subjects ◽  
And Gender ◽  
Nested Case Control ◽  
And Control ◽  
Control Study

BackgroundThe rate-corrected Q-T interval (QTc) prolongation is a risk factor for sudden death and may be produced by antipsychotic drugs.ObjectiveTo determined the frequency and psychopharmacological correlates of baseline prolongation of QTc in a large pediatric cohort.MethodsThe QTc was measured on the electrocardiograms obtained on 811 children and adolescents (404 males and 407 females, mean age: 15.5 ± 2.4 years) consecutively evaluated in the admissions unit of a psychiatric hospital. Each patient with QTc > 440 msec was age- and gender-matched with 5 patients with QTc< 420 msec. The psychiatric diagnoses and psychotropic treatment of patients with prolonged QTc and control subjects were compared in univariate and logistic analyses.ResultsQTc duration was > 440 msec (mean 454 ± 10 msec, range 442–481 msec) in 16 patients (1.97%; 95% confidence interval (CI): 1.17%–3.25%). The 80 control subjects had a mean QTc of 391 ± 21 msec. The groups were similar with regard to the proportion of patients on antipsychotics (43.8% vs. 40.8%, p = 0.78) and chlorpromazine equivalents (165.5 ± 109.7 mg vs. 167.6 ± 217.8 mg, p = 0.98). Logistic regression identified schizophrenia as the only psychiatric predictor of baseline QTc prolongation (odds-ratio: 6.17, 95% CI: 1.24–30.69, p = 0.042).ConclusionsIn a large cohort of children and adolescents with psychiatric disorders, baseline QTc prolongation was infrequent and, at most, of moderate severity. The findings argue against performing electrocardiograms prior to the initiation of antipsychotics in all patients from this age group.

Risk of acute coronary syndrome in elderly users of antipsychotic drugs: a nested case-control study

Heart ◽  
2012 ◽  
Vol 98 (15) ◽  
pp. 1166-1171 ◽  
Author(s):  
Bart C Kleijer ◽  
Huiberdina L Koek ◽  
Rob J van Marum ◽  
Paul A F Jansen ◽  
Toine C G Egberts ◽  
...  
Keyword(s):  
Acute Coronary Syndrome ◽  
Antipsychotic Drugs ◽  
Case Control Study ◽  
Case Control ◽  
Coronary Syndrome ◽  
Nested Case Control ◽  
Elderly Users ◽  
Control Study

Carotid ultrasound findings in rheumatoid arthritis and control subjects: A case-control study

2018 ◽  
Vol 22 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Martin I. Wah-Suarez ◽  
Dionicio A. Galarza-Delgado ◽  
Jose R. Azpiri-Lopez ◽  
Iris J. Colunga-Pedraza ◽  
Estefania E. Abundis-Marquez ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Case Control Study ◽  
Case Control ◽  
Carotid Ultrasound ◽  
Control Subjects ◽  
Ultrasound Findings ◽  
And Control ◽  
Control Study

scholarly journals Risk Factors for Mumps at a University with a Large Mumps Outbreak

2009 ◽  
Vol 124 (3) ◽  
pp. 419-426 ◽  
Author(s):  
Angela S. Huang ◽  
Margaret M. Cortese ◽  
Aaron T. Curns ◽  
Rebecca H. Bitsko ◽  
Hannah T. Jordan ◽  
...  
Keyword(s):  
Risk Factors ◽  
Case Control Study ◽  
Multivariate Analyses ◽  
Health Department ◽  
Mmr Vaccine ◽  
Large Outbreak ◽  
The Mean ◽  
And Gender ◽  
And Control ◽  
Control Study

Objectives. Routine measles-mumps-rubella (MMR) vaccine use has greatly decreased the incidence of mumps in the U.S. However, a resurgence of mumps occurred in 2006. We investigated the large outbreak at a university and assessed risk factors for disease. Methods. We described the outbreak and conducted a case-control study. We interviewed case students (identified from student health service and health department records) and control students (selected from a randomly ordered administrative list) and assessed their vaccination status. We compared case students with ≥2 MMR doses and control students with ≥2 MMR doses in univariate and multivariate analyses. Results. The mean age of the 174 case students was 20.9 years; 65% were women. Ninety-seven case students and 147 control students were enrolled in the study. Two-dose MMR coverage was 99% among case and control students with complete records. Only 33% of case students reported exposure to someone with mumps. Case students were more likely than control students to be aged 18 to 19 years (vs. aged 22 years, adjusted odds ratio [AOR] = 5.55; 95% confidence interval [CI] 2.09, 14.74), to report exposure to mumps (AOR=2.31, 95% CI 1.13, 4.73), and to have worked/volunteered on campus (AOR=2.91, 95% CI 1.33, 6.33). Also, women in dormitories had increased odds of mumps compared with men in dormitories. Conclusion. High two-dose MMR coverage was not sufficient to prevent the outbreak. Further study is needed to better understand the effects of dormitory residency and gender on mumps transmission. Clinicians should be vigilant for mumps in young adults presenting with parotitis regardless of immunization history.

Risk Factors for Tuberculosis (TB) Among Household Contacts of Patients With Smear-Positive TB in 8 Provinces of Vietnam: A Nested Case-Control Study

2020 ◽  
Author(s):  
Kavindhran Velen ◽  
Nguyen Viet Nhung ◽  
Nguyen Thu Anh ◽  
Pham Duc Cuong ◽  
Nguyen Binh Hoa ◽  
...  
Keyword(s):  
Risk Factors ◽  
Case Control Study ◽  
Factors Associated ◽  
Household Contacts ◽  
Key Population ◽  
History Of ◽  
Nested Case Control ◽  
And Control ◽  
Control Study

Abstract Background Tuberculosis (TB) continues to account for significant morbidity and mortality annually. Household contacts (HHCs) of persons with TB are a key population for targeting prevention and control interventions. We aimed to identify risk factors associated with developing TB among HHCs. Methods We conducted a nested case-control study among HHCs in 8 provinces in Vietnam enrolled in a randomized controlled trial of active case finding for TB. Cases were any HHCs diagnosed and registered with TB within the Vietnam National TB Program during 2 years of follow-up. Controls were selected by simple random sampling from the remaining HHCs. Risk factor data were collected at enrollment and during follow-up. A logistic regression model was developed to determine predictors of TB among HHCs. Results We selected 1254 HHCs for the analysis: 214 cases and 1040 controls. Underlying characteristics varied between both groups; cases were older, more likely to be male, with a higher proportion of reported previous TB and diabetes. Risk factors associated with a TB diagnosis included being male (adjusted odds ratio [aOR], 1.4; 95% confidence interval [CI], 1.03–2.0), residing in an urban setting (aOR, 1.8; 1.3–2.5), prior TB (aOR, 4.6; 2.5–8.7), history of diabetes (aOR, 3.1; 1.7–5.8), current smoking (aOR, 3.1; 2.2–4.4), and prolonged history of coughing in the index case at enrollment (OR , 1.6; 1.1–2.3). Conclusions Household contacts remain an important key population for TB prevention and control. TB programs should ensure effective contact investigations are implemented for household contacts, particularly those with additional risk factors for developing TB.

scholarly journals The Association between Plasma Concentration of Phytoestrogens and Hypertension within the Korean Multicenter Cancer Cohort

Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4366
Author(s):  
Juyeon Lee ◽  
Ju-Young Kang ◽  
Kwang-Pil Ko ◽  
Sue-Kyung Park
Keyword(s):  
Regression Models ◽  
Case Control Study ◽  
Time Resolved ◽  
Logistic Regression Models ◽  
Hypertension Risk ◽  
Prevention Of Hypertension ◽  
Nested Case Control ◽  
And Control ◽  
Control Study ◽  
The Continuum

In order to examine the association between plasma phytoestrogen concentration (genistein, daidzein, equol and enterolactone) and hypertension, we conducted a nested case–control study for 229 hypertension cases including 112 prehypertension and 159 healthy controls derived from the Korean Multi-center Cancer Cohort (KMCC). The concentration of plasma phytoestrogens was measured using time-resolved fluoroimmunoassay. We assessed the association between plasma phytoestrogens and hypertension using logistic regression models using odds ratio (OR) and 95% confidence interval (95%CI). The highest tertile of plasma equol and enterolactone concentration exhibited a significantly decreased risk of hypertension (equol, OR = 0.34, 95%CI 0.20–0.57; enterolactone, OR = 0.32, 95%CI 0.18–0.57), compared with the lowest tertile. Equol and enterolactone showed reduced ORs for prehypertension (the highest tertile relative to the lowest tertile, OR = 0.50, 95%CI 0.26–0.96; OR = 0.38, 95%CI 0.19–0.75, respectively) and hypertension (OR = 0.42, 95%CI 0.22–0.81; OR = 0.28, 95%CI 0.14–0.54, respectively). There was a stronger association in hypertension (the highest tertile relative to the lowest tertile in obesity vs. non-obesity; equol, OR = 0.06 vs. 0.63; enterolactone, OR = 0.07 vs. 0.46; both p-heterogeneity < 0.01). This study suggests that equol and enterolactone may contribute to prevent primarily prehypertension and hypertension, and control cardiovascular disease (CVD) based on the continuum of hypertension and CVD. Further study to assess hypertension risk based on useful biomarkers, including phytoestrogens, may contribute to primary prevention of hypertension.

scholarly journals Risk factors for bleeding in haemato-oncology patients—a nested case–control study: The BITE study protocol (Bleeding In Thrombocytopenia Explained)

BMJ Open ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. e034710 ◽  
Author(s):  
Loes L Cornelissen ◽  
Camila Caram-Deelder ◽  
Johanna G van der Bom ◽  
Rutger A Middelburg ◽  
Jaap Jan Zwaginga
Keyword(s):  
Risk Factors ◽  
Case Control Study ◽  
Conditional Logistic Regression ◽  
Case Control ◽  
Source Population ◽  
Bleeding Events ◽  
Oncological Patients ◽  
Nested Case Control ◽  
And Control ◽  
Control Study

IntroductionHaemato-oncological patients often receive platelet count driven prophylactic platelet transfusions to prevent bleeding. However, many prophylactically transfused patients still bleed. More knowledge on risk factors for bleeding is therefore needed. This will enable identification of bleeding risk profiles on which future transfusion policy can be optimised. The present BITE study (Bleeding In Thrombocytopenia Explained) aims to identify clinical conditions and biomarkers that are associated with clinically relevant bleeding events.Methods and analysisA matched case–control study nested in a cohort of haemato-oncological patients in the Netherlands. We collect a limited number of variables from all eligible patients, who together form the source population. These patients are followed for the occurrence of clinically relevant bleeding. Consenting patients of the source population form the cohort. Cases from the cohort are frequency matched to selected control patients for the nested case–control study. Of both case and control patients more detailed clinical data is collected.Study populationAdult haemato-oncological patients, who are admitted for intensive chemotherapeutic treatment or stem cell transplantation, or who received such treatments in the past and are readmitted for disease or treatment-related adverse events.Statistical analysisBleeding incidences will be calculated for the total source population, as well as for different subgroups. The association between potential risk factors and the occurrence of bleeding will be analysed using conditional logistic regression, to account for matching of case and control patients.Ethics and disseminationThe study was approved by the Medical Research Ethics Committee Leiden Den Haag and Delft, and the Radboudumc Committee on Research Involving Human Subjects. Approval in seven other centres is foreseen. Patients will be asked for written informed consent and data is coded before analyses, according to Dutch privacy law. Results will be published in peer-reviewed journals.Trial registration numberNL62499.058.17. NCT03505086; Pre-results.

Physical Activity and Lung Cancer: A Case-Control Study in Brazil

2016 ◽  
Vol 13 (3) ◽  
pp. 257-261 ◽  
Author(s):  
Maria Laura Resem Brizio ◽  
Pedro C. Hallal ◽  
I-Min Lee ◽  
Marlos Rodrigues Domingues
Keyword(s):  
Physical Activity ◽  
Lung Cancer ◽  
Case Control Study ◽  
Leisure Time Physical Activity ◽  
Cancer Control ◽  
Case Control ◽  
Control Subjects ◽  
History Of ◽  
And Control ◽  
Control Study

Background:The aim of this study was to investigate the association between lifetime physical activity and risk of lung cancer.Methods:A case-control study was conducted in southern Brazil. Case subjects were recruited from oncology services of 4 hospitals. Control subjects were selected from the same hospitals, but from different services (traumatology and emergency). Both case subjects (n = 81) and control subjects (n = 168) were interviewed using a questionnaire about sociodemographic characteristics, anthropometric information and family history of cancer. Control subjects were matched to case subjects according to sex and age (± 5 years). Detailed information on smoking was collected. Physical activity was measured using the Lifetime Physical Activity Questionnaire.Results:Of the case subjects, 89% were either current or former smokers; among control subjects, this value was 57%. Participants in the second, third, and fourth quartiles of all-domains physical activity had odds ratios of 0.54 (95% CI, 0.21–1.40), 0.25 (95% CI, 0.08–0.72), and 0.24 (95% CI, 0.07–0.83) for lung cancer, compared with the lowest quartile, after adjusting for confounding. In the fully adjusted models, leisure-time physical activity was not associated with lung cancer risk.Conclusion:Lifetime all-domains physical activity may reduce the risk of lung cancer.

scholarly journals The Relationship Between Shiftwork and Violence Against Nurses: A Case Control Study

2017 ◽  
Vol 65 (12) ◽  
pp. 603-611 ◽  
Author(s):  
Steve Sun ◽  
Susan Goodwin Gerberich ◽  
Andrew D. Ryan
Keyword(s):  
Case Control Study ◽  
Case Control ◽  
Physical Assault ◽  
Work Related ◽  
Increased Risk ◽  
Multivariable Analyses ◽  
Nested Case Control ◽  
And Control ◽  
The Relationship ◽  
Control Study

This study investigated the potential relationship between shiftwork and work-related physical assault (PA) against nurses who are at high risk of violence globally. Nurses (6,300), randomly selected from the licensing database and working in Minnesota, were surveyed regarding PA experiences. Through a nested case-control study, nurses who reported a PA in the previous 12 months and controls who were randomly selected from their assault-free working months, respectively, identified exposures experienced during the month prior to the assault month (cases) and the random non-PA months (controls). Comparing case and control exposures, shiftwork was examined relevant to PA. Among 310 cases and 946 controls, most worked 8 hours or less (87%, 88%) during day shifts (44%, 70%). Multivariable analyses (odds ratios [ORs] and 95% confidence intervals [CIs]) revealed increased risk of PA for nurses working evening (OR = 1.55, 95% CI = [1.05, 2.27]), night (OR = 3.54, 95% CI = [2.31, 5.44]), and rotating day and evening (OR = 2.88, 95% CI = [1.22, 6.80]) shifts, which provides a basis for intervention opportunities.

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