scholarly journals The Adult JUUL Switching and Smoking Trajectories (ADJUSST) Study: Methods and Analysis of Loss-to-Follow-up

2021 ◽  
Vol 45 (3) ◽  
pp. 419-442
Author(s):  
Saul Shiffman ◽  
Mark A. Sembower ◽  
Erik M. Augustson ◽  
Nicholas I. Goldenson ◽  
Farhana Haseen ◽  
...  
Keyword(s):  
Smoking Status ◽  
Potential Bias ◽  
Study Methods ◽  
Loss To Follow Up ◽  
Longitudinal Observational Study ◽  
System User ◽  
History Of ◽  
Former Smokers ◽  
First Time

Objectives: The Adult JUUL System User Switching and Smoking Trajectories (ADJUSST) study assessed the smoking and JUUL use trajectories of adults who purchased JUUL. In this paper, we describe study methods, characterize the sample, and assesses potential for bias due to loss to follow-up. Methods: We entered 55,414 US adults (≥ age 21) who purchased a JUUL Starter Kit for the first time (online or at retail) in 2018 into a naturalistic, longitudinal observational study, irrespective of baseline smoking status. Participants were invited for follow-ups 1, 2, 3, 6, 9, and 12 months later, focused on assessing past-30-day smoking and JUUL use. Analyses assessed potential bias due to non-response. Results: Over 90% of participants had a history of smoking; 62.8% were past-30-day smokers; 23.3% were former smokers. Participants' average age was 30; 75% were white. Most participants (77.6%) completed some follow-ups; 25% completed all follow-ups. Baseline differences among complete responders (N = 13,729), partial responders (N = 29,252), and complete non-responders (N = 12,433) were small. When recontacted, few 12-month non-responders said their non-response was due to smoking; many reported no past-30-day smoking. Conclusions: The study may elucidate smoking trajectories of adult JUUL users. The potential for bias due to loss to follow-up in ADJUSST was limited.

scholarly journals Transitions in Smoking among Adults Newly Purchasing the JUUL System

2021 ◽  
Vol 45 (3) ◽  
pp. 546-562
Author(s):  
Shivaani Prakash ◽  
Yingying Xu ◽  
Nicholas I. Goldenson ◽  
Rasmus Wissmann ◽  
Robyn Gougelet ◽  
...  
Keyword(s):  
Smoking Prevalence ◽  
Smoking Status ◽  
Health Impact ◽  
Adult Age ◽  
Sample Composition ◽  
Former Smokers ◽  
Never Smokers ◽  
One Year ◽  
First Time

Objectives: In this study, we prospectively assessed changes in smoking a year after US adults' first-time purchase of a JUUL Starter Kit (JSK). Methods: Descriptive analyses assessed transitions in smoking status at 12 months among adult (age ≥21) JSK purchasers providing baseline and 12-month follow-up data (N = 27,164 [49.0% of baseline]), stratified by baseline smoking status. Baseline regular use of other ENDS was also considered. Results: Purchasers included baseline past 30-day smokers (65.2%), former smokers (12.0%), and never smokers (9.7%); over 90% were ever-smokers. One year later, the majority (58%) of those smoking at baseline reported no longer smoking. Former smokers or never smokers who were smoking at 12 months represented less than 2% of respondents. Former and current smokers who were regularly using other ENDS at baseline were less likely to report smoking at 12 months. Conclusions: Past 30-day smoking prevalence in a large longitudinal study of first-time JSK purchasers fell by more than half over 12 months. Analyzing the sample composition at purchase and transitions within subgroups defined by smoking status allows for a detailed understanding to help inform assessments of the population health impact of ENDS.

Family History of Crohn’s Disease (CD) May Be a Risk Factor for Developing de novo CD following Ileal Pouch Anal Anastomosis (IPAA) for Ulcerative Colitis (UC)

2020 ◽  
Vol 154 (Supplement_1) ◽  
pp. S150-S150
Author(s):  
H Li ◽  
M Arslan ◽  
Z Fu ◽  
H Lee ◽  
M Mikula
Keyword(s):  
Family History ◽  
De Novo ◽  
Smoking Status ◽  
Smoking History ◽  
Current Smoking Status ◽  
Current Smoking ◽  
History Of ◽  
Former Smokers ◽  
Never Smokers

Abstract Introduction/Objective A subset of patients with an established diagnosis of UC develops signs of CD (de novo CD) following IPAA. While the etiology and risk factors of de novo CD remain largely unknown, preliminary studies have shown controversial results regarding family history of inflammatory bowel disease (IBD) and smoking history. Methods Patients that underwent IPAA for UC, with at least 1 year of follow-up, were identified (n=161; 1996 to 2018). We retrospectively reviewed the electronic medical records. Patients that were diagnosed with de novo CD during the follow-up period were further identified. Smoking history and family history of IBD were evaluated. Chi square test was performed to compare the frequencies. Odds ratio (OR) and 95% confidence intervals (CIs) were estimated by logistic regression model. P<0.05 was considered statistically significant. Results 29 de novo CD were identified. At the time of proctocolectomy, the family history of IBD and smoking history was documented in 152 UC patients including 27 that subsequently developed de novo CD. 23 of 152 had a family history of IBD (12 UC, 9 CD and 2 IBD, NOS). 19/129 (14.7%) UC patients without a family history of any type of IBD, 4/9 (44.4%) with a family history of CD, and 4/12 (33.3%) with a family history of UC developed de novo CD. Patients with a family history of CD were more likely to develop de novo CD post IPAA than those without a family history of any type of IBD (OR 4.63, 95% CI 1.14-18.82, p=0.03). Family history of UC did not correlate with development of de novo CD (OR 2.90; 95% CI 0.79-10.57, p=0.108). At the time of proctocoletomy, 11 were current smokers, 25 were former smokers, and 116 never smoked. In de novo CD group, there were 4/27 (14.8 %) former smokers and 23/27 (85.2 %) never smokers. No de novo CD patient was current smoker. In the UC group that remained as UC following IPAA, 11/125 (8.8%) were current smokers, 21/125 (16.8 %) former smokers, and 93/125 (74.4 %) were never smokers. Current smoking status was not associated with development of de novo CD (p = 0.214). Conclusion Family history of CD may be a risk factor for developing de novo CD following IPAA for UC. Current smoking status was not associated with development of de novo CD following IPAA for UC.

scholarly journals Predictors of virological failure among people living with HIV receiving first line antiretroviral treatment in Myanmar: retrospective cohort analysis

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Anita Mesic ◽  
Alexander Spina ◽  
Htay Thet Mar ◽  
Phone Thit ◽  
Tom Decroo ◽  
...  
Keyword(s):  
Viral Load ◽  
Virological Failure ◽  
Antiretroviral Treatment ◽  
People Living With Hiv ◽  
First Line ◽  
Hiv Viral Load ◽  
Loss To Follow Up ◽  
History Of ◽  
Living With Hiv

Abstract Background Progress toward the global target for 95% virological suppression among those on antiretroviral treatment (ART) is still suboptimal. We describe the viral load (VL) cascade, the incidence of virological failure and associated risk factors among people living with HIV receiving first-line ART in an HIV cohort in Myanmar treated by the Médecins Sans Frontières in collaboration with the Ministry of Health and Sports Myanmar. Methods We conducted a retrospective cohort study, including adult patients with at least one HIV viral load test result and having received of at least 6 months’ standard first-line ART. The incidence rate of virological failure (HIV viral load ≥ 1000 copies/mL) was calculated. Multivariable Cox’s regression was performed to identify risk factors for virological failure. Results We included 25,260 patients with a median age of 33.1 years (interquartile range, IQR 28.0–39.1) and a median observation time of 5.4 years (IQR 3.7–7.9). Virological failure was documented in 3,579 (14.2%) participants, resulting in an overall incidence rate for failure of 2.5 per 100 person-years of follow-up. Among those who had a follow-up viral load result, 1,258 (57.1%) had confirmed virological failure, of which 836 (66.5%) were switched to second-line treatment. An increased hazard for failure was associated with age ≤ 19 years (adjusted hazard ratio, aHR 1.51; 95% confidence intervals, CI 1.20–1.89; p < 0.001), baseline tuberculosis (aHR 1.39; 95% CI 1.14–1.49; p < 0.001), a history of low-level viremia (aHR 1.60; 95% CI 1.42–1.81; p < 0.001), or a history of loss-to-follow-up (aHR 1.24; 95% CI 1.41–1.52; p = 0.041) and being on the same regimen (aHR 1.37; 95% CI 1.07–1.76; p < 0.001). Cumulative appointment delay was not significantly associated with failure after controlling for covariates. Conclusions VL monitoring is an important tool to improve programme outcomes, however limited coverage of VL testing and acting on test results hampers its full potential. In our cohort children and adolescents, PLHIV with history of loss-to-follow-up or those with low-viremia are at the highest risk of virological failure and might require more frequent virological monitoring than is currently recommended.

scholarly journals Self-reported and cotinine-verified smoking and increased risk of incident hearing loss

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Woncheol Lee ◽  
Yoosoo Chang ◽  
Hocheol Shin ◽  
Seungho Ryu
Keyword(s):  
Smoking Status ◽  
Objective Measure ◽  
Self Report ◽  
Urinary Cotinine ◽  
Increased Risk ◽  
Former Smokers ◽  
Never Smokers ◽  
Time Varying Covariates ◽  
New Onset

AbstractWe examined the associations of smoking status and urinary cotinine levels, an objective measure of smoking, with the development of new-onset HL. This cohort study was performed in 293,991 Korean adults free of HL who underwent a comprehensive screening examination and were followed for up to 8.8 years. HL was defined as a pure-tone average of thresholds at 0.5, 1.0, and 2.0 kHz ≥ 25 dB in both ears. During a median follow-up of 4.9 years, 2286 participants developed new-onset bilateral HL. Self-reported smoking status was associated with an increased risk of new-onset bilateral HL. Multivariable-adjusted HRs (95% CIs) for incident HL comparing former smokers and current smokers to never-smokers were 1.14 (1.004–1.30) and 1.40 (1.21–1.61), respectively. Number of cigarettes, pack-years, and urinary cotinine levels were consistently associated with incident HL. These associations were similarly observed when introducing changes in smoking status, urinary cotinine, and other confounders during follow-up as time-varying covariates. In this large cohort of young and middle-aged men and women, smoking status based on both self-report and urinary cotinine level were independently associated with an increased incidence of bilateral HL. Our findings indicate smoking is an independent risk factor for HL.

Abstract P178: Dairy Consumption and Risk of Becoming Overweight or Obese in Middle-Aged and Older Women.

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Susanne Rautiainen ◽  
Lu Wang ◽  
I-Min Lee ◽  
JoAnn E Manson ◽  
Julie E Buring ◽  
...  
Keyword(s):  
Body Weight ◽  
Dairy Products ◽  
Smoking Status ◽  
Health Study ◽  
High Fat ◽  
Low Fat ◽  
Dairy Intake ◽  
Dairy Consumption ◽  
History Of

Background: Dairy products have been positively associated with weight loss and inversely associated with weight gain. However, limited number of studies has investigated the role of dairy consumption in the prevention of becoming overweight or obese. The aim of this study was to prospectively investigate how consumption of dairy products was associated with the risk of becoming overweight or obese among initially normal-weight women. Methods: We studied 19,180 women aged ≥45y from the Women’s Health Study free of cardiovascular disease (CVD), cancer, and diabetes with an initial body mass index (BMI) of 18.5-<25 kg/m 2 . Dairy intake was assessed through a 131-item food-frequency questionnaire. Total dairy intake was defined as the sum of servings per day of low-fat dairy products (skim/low-fat milk, sherbet, yogurt, and cottage/ricotta cheese) and high-fat dairy products (whole milk, cream, sour cream, ice cream, cream cheese, other cheese, and butter). Women self-reported body weight along with obesity-related risk factors on baseline and annual follow-up questionnaires. In multivariable-adjusted analyses, we included the following covariates: baseline age, randomization treatment, BMI, smoking status, vigorous exercise, postmenopausal status, postmenopausal hormone use, history of hypercholesterolemia, history of hypertension, multivitamin use, alcohol intake, total energy intake, and fruit and vegetable intake. Results: During a mean follow-up of 11.2y (216,979 person-years), 8,582 women became overweight or obese (BMI ≥25 kg/m 2 ). The multivariable-adjusted mean changes in body weight (95% confidence interval (CI)) during the follow-up were 3.9 (3.5-4.3), 3.9 (3.5-4.2), 3.8 (3.5-4.2), 3.7 (3.4-4.1), and 3.4 (3.0-3.7) lbs in quintiles 1-5 of total dairy consumption (P-trend: 0.01), respectively. In multivariable-adjusted analyses (Table 1) , women in the highest versus lowest quintile of had a rate ratio (RR) of 0.91 (0.84-0.98, P-trend: 0.16) of becoming overweight or obese. No associations were observed in highest quintiles of low-fat dairy and high-fat dairy intakes. Conclusion: Greater consumption of dairy products may be inversely ssociated with risk of becoming overweight or obese in women.

scholarly journals Cardiovascular family history increases the risk of disease recurrence after a first myocardial infarction

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
A Wahrenberg ◽  
P Magnusson ◽  
R Kuja-Halkola ◽  
H Habel ◽  
K Hambraeus ◽  
...  
Keyword(s):  
Risk Factors ◽  
Myocardial Infarction ◽  
Family History ◽  
Cardiovascular Events ◽  
Cardiovascular Death ◽  
Funding Source ◽  
History Of ◽  
First Time ◽  
Early Family

Abstract Background Despite recent advances in secondary prevention, recurrent cardiovascular events are common after a myocardial infarction (MI). It has been reported that genetic risk scores may predict the risk of recurrent cardiovascular events. Although patient-derived family history is a composite of both genetic and environmental heritability of atherosclerotic cardiovascular disease (ASCVD), it is an easily accessible information compared to genetically based risk models but the association with recurrent events is unknown. Purpose To evaluate whether a register-verified family history of ASCVD is associated with recurrent cardiovascular events (rASCVD) in patients after a first-time MI. Methods We included patients with a first-time MI during 2005 – 2014, registered in the SWEDEHEART SEPHIA registry and without prior ASCVD. Follow-up was available until Dec 31st, 2018. Data on relatives, diagnoses and prescriptions were extracted from national registers. A family history of ASCVD was defined as a register-verified hospitalisation due to MI, angina with coronary revascularization procedures, stroke or cardiovascular death in any parent. Early history was defined as such an event before the age of 55 years in fathers and 65 years in mothers. The association between family history and a composite outcome including recurrent MI, angina requiring acute revascularization, ischaemic stroke and cardiovascular death during follow-up was studied with Cox proportional hazard regression with time from SEPHIA registry completion as underlying time-scale, adjusted for age with splines, gender and year of SEPHIA registry. Regression models were then further adjusted for hypertension, diabetes, smoking and for a subset of patients, LDL-cholesterol (LDL_C) at time of first event. Results Of 25,615 patients, 2.5% and 32.1% had an early and ever-occurring family history of ASCVD, respectively. Patients with early family history were significantly younger than other patients and were more likely to be current smokers and have a higher LDL-C (Median (IQR) 3.5 (1.1) vs 3.3 (1.1) mmol/L). In total, 3,971 (15.5%) patients experienced the outcome. Early family history of ASCVD was significantly associated with rASCVD (Hazard ratio (HR) 1.52, 95% confidence interval (CI) 1.23–1.87), and the effect was sustained when adjusted for cardiovascular risk factors (HR 1.48, 95% CI 1.20–1.83) and LDL-C (HR 1.35, 95% CI 1.04–1.74). Ever-occurring family history was weakly associated with ASCVD (HR 1.09, 95% CI 1.02 – 1.17) and the association remained unchanged with adjustments for risk factors. Conclusions Early family history of cardiovascular disease is a potent risk factor for recurrent cardiovascular events in a secondary prevention setting, independent of traditional risk factors including LDL-C. This is a novel finding and these patients may potentially benefit from intensified secondary preventive measures after a first-time MI. Funding Acknowledgement Type of funding source: Private grant(s) and/or Sponsorship. Main funding source(s): This work was funded by grants from The Swedish Heart and Lung Association

scholarly journals Acquired arteriovenous fistula formation following cephalic vein intravenous catheterisation in a cat

2019 ◽  
Vol 5 (1) ◽  
pp. 205511691983185
Author(s):  
Lisa Graziano ◽  
Stefania Di Paco ◽  
Giancarlo Avallone ◽  
Paola Roccabanca
Keyword(s):  
Arteriovenous Fistula ◽  
High Velocity ◽  
Clinical Findings ◽  
Cephalic Vein ◽  
Fistula Formation ◽  
Deep Dermis ◽  
Velocity Flow ◽  
History Of ◽  
First Time

Case summary A 10-year-old male neutered domestic shorthair cat was presented with a 4 month history of slow, progressive swelling and intermittent multifocal bleeding of the distal right forepaw that progressively developed after cephalic vein catheterisation for anaesthesia. The procedure was performed for dental calculus removal. Initial clinical and biopsy (superficial biopsy) findings matched two differential diagnoses: progressive angiomatosis and acquired peripheral arteriovenous fistula (AVF). AVF was suspected based on Doppler ultrasound examination that identified multiple abnormal sinusoidal neoformed branching vessels with turbulent high-velocity flow spectrum at the confluence of the artery and vein, and high-velocity arterialised flow in the vein. Owing to rapid and severe progression of lesions after biopsy, the owner requested amputation of the cat’s limb. A definitive diagnosis of acquired iatrogenic peripheral AVF was based on deep-tissue microscopical evaluation. High numbers of arterioles and venules in superficial and deep dermis embedded in oedematous stroma were connected to dilated and tortuous vessels with irregularly thickened walls in deep dermis and panniculus. Vasculitis and vascular thrombosis and thickening (attributed to local hypertension) were common findings. No bone or muscular invasion were observed. The cat was doing well 3 years after surgery. Relevance and novel information This report describes a case of iatrogenic acquired peripheral AVF following venous catheterisation in a cat, fully documented for the first time by a combination of clinical findings, ultrasound imaging, complete histopathology and follow-up history.

scholarly journals Incidence of and Risk Factors for Glenohumeral Osteoarthritis After Anterior Shoulder Instability: A US Population–Based Study With Average 15-Year Follow-up

2020 ◽  
Vol 8 (11) ◽  
pp. 232596712096251
Author(s):  
Bradley M. Kruckeberg ◽  
Devin P. Leland ◽  
Christopher D. Bernard ◽  
Aaron J. Krych ◽  
Diane L. Dahm ◽  
...  
Keyword(s):  
Risk Factors ◽  
Shoulder Instability ◽  
The United States ◽  
Anterior Shoulder Instability ◽  
Geographic Population ◽  
Increased Risk ◽  
Modifiable Factors ◽  
History Of ◽  
Former Smokers

Background: The rate of osteoarthritis (OA) in patients with a history of previous anterior shoulder instability (ASI) varies within the literature, with the majority of studies investigating rates after surgical stabilization. ASI appears to lead to increased rates of OA, although risk factors for developing OA in cohorts treated nonoperatively and operatively are not well-defined. Purpose: To determine the incidence of clinically symptomatic OA and identify potential risk factors for the development of OA in patients younger than 40 years with a known history of ASI. Study Design: Case-control study; Level of evidence, 3. Methods: An established, geographically based database was used to identify patients in the United States who were younger than 40 years and were diagnosed with ASI between 1994 and 2014. Patient information, including demographic, imaging, and surgical details, was collected. Comparative analysis was performed between groups with and without OA at final follow-up as well as between patients who underwent surgical and nonsurgical management. Results: The study population consisted of 154 patients with a mean follow-up of 15.2 years (range, 5.1-29.8 years). The mean age at initial instability event was 20.9 years (95% CI, 19.9-22.0 years). Overall, 22.7% of patients developed clinically symptomatic glenohumeral OA. Multivariate analysis revealed that current or former smokers (odds ratio [OR], 4.3; 95% CI, 1.1-16.5; P = .030), hyperlaxity (OR, 10.1; 95% CI, 1.4-72.4; P = .020), laborer occupation (OR, 6.1; 95% CI, 1.02-36.1; P = .043), body mass index (BMI) (OR, 1.2; 95% CI, 1.03-1.3; P = .012), and age at initial instability (OR, 1.1; 95% CI, 1.02-1.2; P = .013) as potential independent risk factors when accounting for other demographic and clinical variables. Conclusion: In a US geographic population of patients younger than 40 years with ASI, approximately one-fourth of patients developed symptomatic OA at a mean follow-up of 15 years from their first instability event. When accounting for differences in patient demographic and clinical data, we noted a potentially increased risk for the development of OA in patients who are current or former smokers, have hyperlaxity, are laborers, have higher BMI, and have increased age at initial instability event. Smoking status, occupation, and BMI are modifiable factors that could potentially decrease risk for the development of symptomatic OA in these patients.

Potential bias due to outcome-related loss to follow-up in cohort studies on incidence of drug injection: systematic review and meta-analysis

Addiction ◽  
2015 ◽  
Vol 110 (8) ◽  
pp. 1247-1257 ◽  
Author(s):  
Luis Sordo ◽  
Maria J. Bravo ◽  
Gregorio Barrio ◽  
B. Iciar Indave ◽  
Louisa Degenhardt ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cohort Studies ◽  
Meta Analysis ◽  
Potential Bias ◽  
Drug Injection ◽  
Loss To Follow Up

Natural history of unruptured intracranial aneurysms: probability of and risk factors for aneurysm rupture

2008 ◽  
Vol 108 (5) ◽  
pp. 1052-1060 ◽  
Author(s):  
Seppo Juvela ◽  
Matti Porras ◽  
Kristiina Poussa
Keyword(s):  
Risk Factors ◽  
Intracranial Aneurysms ◽  
Smoking Status ◽  
Significant Risk ◽  
Significant Risk Factor ◽  
Aneurysm Rupture ◽  
Unruptured Aneurysms ◽  
Unruptured Intracranial Aneurysms ◽  
History Of

Object The authors conducted a study to investigate the long-term natural history of unruptured intracranial aneurysms and the predictive risk factors determining subsequent rupture in a patient population in which surgical selection of cases was not performed. Methods One hundred forty-two patients with 181 unruptured aneurysms were followed from the 1950s until death or the occurrence of subarachnoid hemorrhage or until the years 1997 to 1998. The annual and cumulative incidence of aneurysm rupture as well as several potential risk factors predictive of rupture were studied using life-table analyses and Cox's proportional hazards regression models including time-dependent covariates. The median follow-up time was 19.7 years (range 0.8–38.9 years). During 2575 person-years of follow up, there were 33 first-time episodes of hemorrhage from previously unruptured aneurysms, for an average annual incidence of 1.3%. In 17 patients, hemorrhage led to death. The cumulative rate of bleeding was 10.5% at 10 years, 23% at 20 years, and 30.3% at 30 years after diagnosis. The diameter of the unruptured aneurysm (relative risk [RR] 1.11 per mm in diameter, 95% confidence interval [CI] 1–1.23, p = 0.05) and patient age at diagnosis inversely (RR 0.97 per year, 95% CI 0.93–1, p = 0.05) were significant independent predictors for a subsequent aneurysm rupture after adjustment for sex, hypertension, and aneurysm group. Active smoking status at the time of diagnosis was a significant risk factor for aneurysm rupture (RR 1.46, 95% CI 1.04–2.06, p = 0.033) after adjustment for size of the aneurysm, patient age, sex, presence of hypertension, and aneurysm group. Active smoking status as a time-dependent covariate was an even more significant risk factor for aneurysm rupture (adjusted RR 3.04, 95% CI 1.21–7.66, p = 0.02). Conclusions Cigarette smoking, size of the unruptured intracranial aneurysm, and age, inversely, are important factors determining risk for subsequent aneurysm rupture. The authors conclude that such unruptured aneurysms should be surgically treated regardless of their size and of a patient's smoking status, especially in young and middle-aged adults, if this is technically possible and if the patient's concurrent diseases are not contraindications. Cessation of smoking may also be a good alternative to surgery in older patients with small-sized aneurysms.

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