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Publication Record


Sex-Based Differences in Incidence of Inflammatory Bowel Diseases-Pooled Analysis of Population-Based Studies From Western Countries.
Shah SC, Khalili H, Gower-Rousseau C, Olen O, Benchimol EI, Lynge E, Nielsen KR, Brassard P, Vutcovici M, Bitton A, Bernstein CN, Leddin D, Tamim H, Stefansson T, Loftus EV, Moum B, Tang W, Ng SC, Gearry R, Sincic B, Bell S, Sands BE, Lakatos PL, Végh Z, Ott C, Kaplan GG, Burisch J, Colombel JF
(2018) Gastroenterology 155: 1079-1089.e3
MeSH Terms: Adolescent, Adult, Age Distribution, Age of Onset, Aged, Australia, Child, Child, Preschool, Colitis, Ulcerative, Crohn Disease, Europe, Female, Humans, Incidence, Infant, Infant, Newborn, Male, Middle Aged, New Zealand, North America, Risk Factors, Sex Distribution, Sex Factors, Time Factors, Young Adult
Show Abstract · Added March 3, 2020
BACKGROUND & AIMS - Although the incidence of inflammatory bowel diseases (IBDs) varies with age, few studies have examined variations between the sexes. We therefore used population data from established cohorts to analyze sex differences in IBD incidence according to age at diagnosis.
METHODS - We identified population-based cohorts of patients with IBD for which incidence and age data were available (17 distinct cohorts from 16 regions of Europe, North America, Australia, and New Zealand). We collected data through December 2016 on 95,605 incident cases of Crohn's disease (CD) (42,831 male and 52,774 female) and 112,004 incident cases of ulcerative colitis (UC) (61,672 male and 50,332 female). We pooled incidence rate ratios of CD and UC for the combined cohort and compared differences according to sex using random effects meta-analysis.
RESULTS - Female patients had a lower risk of CD during childhood, until the age range of 10-14 years (incidence rate ratio, 0.70; 95% CI, 0.53-0.93), but they had a higher risk of CD thereafter, which was statistically significant for the age groups of 25-29 years and older than 35 years. The incidence of UC did not differ significantly for female vs male patients (except for the age group of 5-9 years) until age 45 years; thereafter, men had a significantly higher incidence of ulcerative colitis than women.
CONCLUSIONS - In a pooled analysis of population-based studies, we found age at IBD onset to vary with sex. Further studies are needed to investigate mechanisms of sex differences in IBD incidence.
Copyright © 2018 AGA Institute. Published by Elsevier Inc. All rights reserved.
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Clinical Features Associated With Nascent Left Ventricular Diastolic Dysfunction in a Population Aged 40 to 55 Years.
Mosley JD, Levinson RT, Brittain EL, Gupta DK, Farber-Eger E, Shaffer CM, Denny JC, Roden DM, Wells QS
(2018) Am J Cardiol 121: 1552-1557
MeSH Terms: Adult, Age Distribution, Cohort Studies, Databases, Factual, Diabetes Mellitus, Type 2, Echocardiography, Female, Heart Failure, Diastolic, Humans, Hypertension, Incidence, Kaplan-Meier Estimate, Linear Models, Male, Middle Aged, Multivariate Analysis, Prognosis, Retrospective Studies, Risk Assessment, Severity of Illness Index, Sex Distribution, Stroke Volume, Survival Analysis, United States, Ventricular Dysfunction, Left
Show Abstract · Added June 7, 2018
Diastolic dysfunction (DD), an abnormality in cardiac left ventricular (LV) chamber compliance, is associated with increased morbidity and mortality. Although DD has been extensively studied in older populations, co-morbidity patterns are less well characterized in middle-aged subjects. We screened 156,434 subjects with transthoracic echocardiogram reports available through Vanderbilt's electronic heath record and identified 6,612 subjects 40 to 55 years old with an LV ejection fraction ≥50% and diastolic function staging. We tested 452 incident and prevalent clinical diagnoses for associations with early-stage DD (n = 1,676) versus normal function. There were 44 co-morbid diagnoses associated with grade 1 DD including hypertension (odds ratio [OR] = 2.02, 95% confidence interval [CI] 1.78 to 2.28, p <5.3 × 10-29), type 2 diabetes (OR 1.96, 95% CI 1.68 to 2.29, p = 2.1 × 10-17), tachycardia (OR 1.38, 95% CI 0.53 to 2.19, p = 2.9 × 10-6), obesity (OR 1.76, 95% CI 1.51 to 2.06, p = 1.7 × 10-12), and clinical end points, including end-stage renal disease (OR 3.29, 95% CI 2.19 to 4.96, p = 1.2 × 10-8) and stroke (OR 1.5, 95% CI 1.12 to 2.02, p = 6.9 × 10-3). Among the 60 incident diagnoses associated with DD, heart failure with preserved ejection fraction (OR 4.63, 95% CI 3.39 to 6.32, p = 6.3 × 10-22) had the most significant association. Among subjects with normal diastolic function and blood pressure at baseline, a blood pressure measurement in the hypertensive range at the time of the second echocardiogram was associated with progression to stage 1 DD (p = 0.04). In conclusion, DD was common among subjects 40 to 55 years old and was associated with a heavy burden of co-morbid disease.
Copyright © 2018 Elsevier Inc. All rights reserved.
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25 MeSH Terms
Nephrolithiasis Among Middle Aged and Elderly Urban Chinese: A Report from Prospective Cohort Studies in Shanghai.
Shu X, Cai H, Xiang YB, Li H, Lipworth L, Miller NL, Zheng W, Shu XO, Hsi RS
(2017) J Endourol 31: 1327-1334
MeSH Terms: Adult, Aged, Body Mass Index, Cardiovascular Diseases, China, Cohort Studies, Coronary Disease, Female, Humans, Hypertension, Incidence, Male, Middle Aged, Nephrolithiasis, Obesity, Proportional Hazards Models, Prospective Studies, Risk Factors, Sex Distribution, Sex Factors, Stroke, Urban Population, Waist-Hip Ratio
Show Abstract · Added January 16, 2018
INTRODUCTION - Kidney stone risk factors are understudied among Asians. Our study objective was to investigate associations of obesity and other chronic diseases with incident kidney stones among the urban Chinese.
PATIENTS AND METHODS - Included in this study are two prospective cohorts: the Shanghai Women's Health Study (N = 69,166) and Shanghai Men's Health Study (N = 58,054). Incident kidney stones were determined by self-report in 2004 and 2008. Cox regression models were used to evaluate the associations of study variables with stone risk with adjustment of demographics, medical history, and dietary intakes.
RESULTS - There were 2653 incident stones over 1,007,958 person-years of follow-up. Overall incidence rates (per 1000 person-years, 95% confidence interval [CI]) were 2.10 (1.99, 2.21) among women and 3.80 (3.59, 4.02) among men. Higher body mass index (BMI) was associated with risk (BMI ≥25 vs 18.5-24.9 kg/m, women: hazard ratio [HR] = 1.14 [95% CI 1.01, 1.28]; men: HR = 1.17 [1.03, 1.32]). High waist-hip ratio (≥0.80 and ≥0.90 for women and men, respectively) was associated with risk (HR 1.13, 95% CI 1.01, 1.27 for women; HR 1.19, 95% CI 1.05, 1.35 for men). Coronary heart disease or stroke history was associated with risk in women only (HR 1.31, 95% CI 1.10, 1.56). Hypertension history was associated with risk in men only (HR 1.27, 95% CI 1.11, 1.45). No significant association with diabetes mellitus was observed.
CONCLUSIONS - Among the Chinese, kidney stone incidence in men is almost twice that of women. Obesity is a shared risk factor. Hypertension history is associated with risk in men, whereas history of coronary heart disease or stroke is associated with risk in women.
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23 MeSH Terms
Heart Failure Incidence and Mortality in the Southern Community Cohort Study.
Akwo EA, Kabagambe EK, Wang TJ, Harrell FE, Blot WJ, Mumma M, Gupta DK, Lipworth L
(2017) Circ Heart Fail 10:
MeSH Terms: Adult, African Americans, Aged, Comorbidity, European Continental Ancestry Group, Female, Heart Failure, Humans, Incidence, Male, Middle Aged, Poverty, Prognosis, Proportional Hazards Models, Prospective Studies, Risk Assessment, Risk Factors, Sex Distribution, Southeastern United States, Time Factors
Show Abstract · Added March 4, 2017
BACKGROUND - There is a paucity of data on heart failure (HF) incidence among low-income and minority populations. Our objective was to investigate HF incidence and post-HF survival by race and sex among low-income adults in the southeastern United States.
METHODS AND RESULTS - Participants were 27 078 white and black men and women enrolled during 2002 to 2009 in the SCCS (Southern Community Cohort Study) who had no history of HF and were receiving Centers for Medicare and Medicaid Services. Incident HF diagnoses through December 31, 2010 were ascertained using 9th Revision codes 428.x via linkage with Centers for Medicare and Medicaid Services research files. Most participants were black (68.8%), women (62.6%), and earned <$15 000/y (69.7%); mean age was 55.5 (10.4) years. Risk factors for HF were common: hypertension (62.5%), diabetes mellitus (26.5%), myocardial infarction (8.6%), and obesity (44.8%). Over a median follow-up of 5.2 years, 4341 participants were diagnosed with HF. The age-standardized incidence rates were 34.8, 37.3, 34.9, and 35.6 /1000 person-years in white women, white men, black men, and black women, respectively, remarkably higher than previously reported. Among HF cases, 952 deaths occurred over a median follow-up of 2.3 years. Men had lower survival; hazard ratios and 95% confidence intervals were 1.63 (1.27-2.08), 1.38 (1.11-1.72), and 0.90 (0.73-1.12) for white men, black men, and black women compared with white women.
CONCLUSIONS - In this low-income population, HF incidence was higher for all race-sex groups than previously reported in other cohorts. The SCCS is a unique resource to investigate determinants of HF risk in a segment of the population underrepresented in other existing cohorts.
© 2017 American Heart Association, Inc.
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20 MeSH Terms
Nonalcoholic Fatty Liver Disease and Incident Cardiac Events: The Multi-Ethnic Study of Atherosclerosis.
Zeb I, Li D, Budoff MJ, Katz R, Lloyd-Jones D, Agatston A, Blumenthal RS, Blaha MJ, Blankstein R, Carr J, Nasir K
(2016) J Am Coll Cardiol 67: 1965-6
MeSH Terms: Age Distribution, Aged, Aged, 80 and over, Comorbidity, Coronary Artery Disease, Ethnic Groups, Female, Humans, Incidence, Kaplan-Meier Estimate, Male, Middle Aged, Non-alcoholic Fatty Liver Disease, Predictive Value of Tests, ROC Curve, Risk Assessment, Severity of Illness Index, Sex Distribution, United States
Added September 29, 2016
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19 MeSH Terms
Smoking, sex, risk factors and abdominal aortic aneurysms: a prospective study of 18 782 persons aged above 65 years in the Southern Community Cohort Study.
Jahangir E, Lipworth L, Edwards TL, Kabagambe EK, Mumma MT, Mensah GA, Fazio S, Blot WJ, Sampson UK
(2015) J Epidemiol Community Health 69: 481-8
MeSH Terms: Adult, African Americans, Aged, Aortic Aneurysm, Abdominal, Cardiovascular Diseases, Comorbidity, Diabetes Mellitus, European Continental Ancestry Group, Female, Humans, Incidence, Life Style, Male, Middle Aged, Prevalence, Proportional Hazards Models, Prospective Studies, Protective Factors, Risk Assessment, Sex Distribution, Smoking, Socioeconomic Factors, Southeastern United States
Show Abstract · Added January 20, 2015
BACKGROUND - Abdominal aortic aneurysm (AAA) is a leading cause of death in the USA. We evaluated the incidence and predictors of AAA in a prospectively followed cohort.
METHODS - We calculated age-adjusted AAA incidence rates (IR) among 18 782 participants aged ≥65 years in the Southern Community Cohort Study who received Medicare coverage from 1999-2012, and assessed predictors of AAA using multivariable Cox proportional hazards models, overall and stratified by sex, adjusting for demographic, lifestyle, socioeconomic, medical and other factors. HRs and 95% CIs were calculated for AAA in relation to factors ascertained at enrolment.
RESULTS - Over a median follow-up of 4.94 years, 281 cases were identified. Annual IR was 153/100,000, 401, 354 and 174 among blacks, whites, men and women, respectively. AAA risk was lower among women (HR 0.48, 95% CI 0.36 to 0.65) and blacks (HR 0.51, 95% CI 0.37 to 0.69). Smoking was the strongest risk factor (former: HR 1.91, 95% CI 1.27 to 2.87; current: HR 5.55, 95% CI 3.67 to 8.40), and pronounced in women (former: HR 3.4, 95% CI 1.83 to 6.31; current: HR 9.17, 95% CI 4.95 to 17). A history of hypertension (HR 1.44, 95% CI 1.04 to 2.01) and myocardial infarction or coronary artery bypass surgery (HR 1.9, 95% CI 1.37 to 2.63) was negatively associated, whereas a body mass index ≥25 kg/m(2) (HR 0.72; 95% CI 0.53 to 0.98) was protective. College education (HR 0.6, 95% CI 0.37 to 0.97) and black race (HR 0.44, 95% CI 0.28 to 0.67) were protective among men.
CONCLUSIONS - Smoking is a major risk factor for incident AAA, with a strong and similar association between men and women. Further studies are needed to evaluate benefits of ultrasound screening for AAA among women smokers.
Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
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23 MeSH Terms
Global, regional, and national age-sex specific all-cause and cause-specific mortality for 240 causes of death, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013.
GBD 2013 Mortality and Causes of Death Collaborators
(2015) Lancet 385: 117-71
MeSH Terms: Adolescent, Adult, Aged, Aged, 80 and over, Cause of Death, Child, Child Mortality, Child, Preschool, Databases, Factual, Female, Global Health, Humans, Infant, Infant, Newborn, Life Expectancy, Life Tables, Male, Middle Aged, Models, Statistical, Mortality, Sex Distribution, Young Adult
Show Abstract · Added April 23, 2015
BACKGROUND - Up-to-date evidence on levels and trends for age-sex-specific all-cause and cause-specific mortality is essential for the formation of global, regional, and national health policies. In the Global Burden of Disease Study 2013 (GBD 2013) we estimated yearly deaths for 188 countries between 1990, and 2013. We used the results to assess whether there is epidemiological convergence across countries.
METHODS - We estimated age-sex-specific all-cause mortality using the GBD 2010 methods with some refinements to improve accuracy applied to an updated database of vital registration, survey, and census data. We generally estimated cause of death as in the GBD 2010. Key improvements included the addition of more recent vital registration data for 72 countries, an updated verbal autopsy literature review, two new and detailed data systems for China, and more detail for Mexico, UK, Turkey, and Russia. We improved statistical models for garbage code redistribution. We used six different modelling strategies across the 240 causes; cause of death ensemble modelling (CODEm) was the dominant strategy for causes with sufficient information. Trends for Alzheimer's disease and other dementias were informed by meta-regression of prevalence studies. For pathogen-specific causes of diarrhoea and lower respiratory infections we used a counterfactual approach. We computed two measures of convergence (inequality) across countries: the average relative difference across all pairs of countries (Gini coefficient) and the average absolute difference across countries. To summarise broad findings, we used multiple decrement life-tables to decompose probabilities of death from birth to exact age 15 years, from exact age 15 years to exact age 50 years, and from exact age 50 years to exact age 75 years, and life expectancy at birth into major causes. For all quantities reported, we computed 95% uncertainty intervals (UIs). We constrained cause-specific fractions within each age-sex-country-year group to sum to all-cause mortality based on draws from the uncertainty distributions.
FINDINGS - Global life expectancy for both sexes increased from 65.3 years (UI 65.0-65.6) in 1990, to 71.5 years (UI 71.0-71.9) in 2013, while the number of deaths increased from 47.5 million (UI 46.8-48.2) to 54.9 million (UI 53.6-56.3) over the same interval. Global progress masked variation by age and sex: for children, average absolute differences between countries decreased but relative differences increased. For women aged 25-39 years and older than 75 years and for men aged 20-49 years and 65 years and older, both absolute and relative differences increased. Decomposition of global and regional life expectancy showed the prominent role of reductions in age-standardised death rates for cardiovascular diseases and cancers in high-income regions, and reductions in child deaths from diarrhoea, lower respiratory infections, and neonatal causes in low-income regions. HIV/AIDS reduced life expectancy in southern sub-Saharan Africa. For most communicable causes of death both numbers of deaths and age-standardised death rates fell whereas for most non-communicable causes, demographic shifts have increased numbers of deaths but decreased age-standardised death rates. Global deaths from injury increased by 10.7%, from 4.3 million deaths in 1990 to 4.8 million in 2013; but age-standardised rates declined over the same period by 21%. For some causes of more than 100,000 deaths per year in 2013, age-standardised death rates increased between 1990 and 2013, including HIV/AIDS, pancreatic cancer, atrial fibrillation and flutter, drug use disorders, diabetes, chronic kidney disease, and sickle-cell anaemias. Diarrhoeal diseases, lower respiratory infections, neonatal causes, and malaria are still in the top five causes of death in children younger than 5 years. The most important pathogens are rotavirus for diarrhoea and pneumococcus for lower respiratory infections. Country-specific probabilities of death over three phases of life were substantially varied between and within regions.
INTERPRETATION - For most countries, the general pattern of reductions in age-sex specific mortality has been associated with a progressive shift towards a larger share of the remaining deaths caused by non-communicable disease and injuries. Assessing epidemiological convergence across countries depends on whether an absolute or relative measure of inequality is used. Nevertheless, age-standardised death rates for seven substantial causes are increasing, suggesting the potential for reversals in some countries. Important gaps exist in the empirical data for cause of death estimates for some countries; for example, no national data for India are available for the past decade.
FUNDING - Bill & Melinda Gates Foundation.
Copyright © 2015 Elsevier Ltd. All rights reserved.
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Life paths and accomplishments of mathematically precocious males and females four decades later.
Lubinski D, Benbow CP, Kell HJ
(2014) Psychol Sci 25: 2217-32
MeSH Terms: Achievement, Adaptation, Psychological, Adolescent, Aptitude, Career Choice, Cohort Studies, Family, Female, Humans, Income, Intelligence, Leadership, Life Style, Male, Mathematics, Middle Aged, Occupations, Personal Satisfaction, Sex Distribution
Show Abstract · Added April 10, 2018
Two cohorts of intellectually talented 13-year-olds were identified in the 1970s (1972-1974 and 1976-1978) as being in the top 1% of mathematical reasoning ability (1,037 males, 613 females). About four decades later, data on their careers, accomplishments, psychological well-being, families, and life preferences and priorities were collected. Their accomplishments far exceeded base-rate expectations: Across the two cohorts, 4.1% had earned tenure at a major research university, 2.3% were top executives at "name brand" or Fortune 500 companies, and 2.4% were attorneys at major firms or organizations; participants had published 85 books and 7,572 refereed articles, secured 681 patents, and amassed $358 million in grants. For both males and females, mathematical precocity early in life predicts later creative contributions and leadership in critical occupational roles. On average, males had incomes much greater than their spouses', whereas females had incomes slightly lower than their spouses'. Salient sex differences that paralleled the differential career outcomes of the male and female participants were found in lifestyle preferences and priorities and in time allocation.
© The Author(s) 2014.
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Sedentary behavior is associated with colorectal adenoma recurrence in men.
Molmenti CL, Hibler EA, Ashbeck EL, Thomson CA, Garcia DO, Roe D, Harris RB, Lance P, Cisneroz M, Martinez ME, Thompson PA, Jacobs ET
(2014) Cancer Causes Control 25: 1387-95
MeSH Terms: Adenoma, Adult, Age Distribution, Aged, Aged, 80 and over, Arizona, Clinical Trials, Phase III as Topic, Colonoscopy, Colorectal Neoplasms, Double-Blind Method, Female, Humans, Logistic Models, Male, Middle Aged, Neoplasm Recurrence, Local, Sedentary Behavior, Sex Distribution, Sex Factors, Surveys and Questionnaires
Show Abstract · Added December 29, 2014
PURPOSE - The association between physical activity and colorectal adenoma is equivocal. This study was designed to assess the relationship between physical activity and colorectal adenoma recurrence.
METHODS - Pooled analyses from two randomized, controlled trials included 1,730 participants who completed the Arizona Activity Frequency Questionnaire at baseline, had a colorectal adenoma removed within 6 months of study registration, and had a follow-up colonoscopy during the trial. Logistic regression modeling was employed to estimate the effect of sedentary behavior, light-intensity physical activity, and moderate-vigorous physical activity on colorectal adenoma recurrence.
RESULTS - No statistically significant trends were found for any activity type and odds of colorectal adenoma recurrence in the pooled population. However, males with the highest levels of sedentary time experienced 47% higher odds of adenoma recurrence. Compared to the lowest quartile of sedentary time, the ORs (95% CIs) for the second, third, and fourth quartiles among men were 1.23 (0.88, 1.74), 1.41 (0.99, 2.01), and 1.47 (1.03, 2.11), respectively (p(trend) = 0.03). No similar association was observed for women.
CONCLUSIONS - This study suggests that sedentary behavior is associated with a higher risk of colorectal adenoma recurrence among men, providing evidence of detrimental effects of a sedentary lifestyle early in the carcinogenesis pathway.
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20 MeSH Terms
Variation in the percent of emphysema-like lung in a healthy, nonsmoking multiethnic sample. The MESA lung study.
Hoffman EA, Ahmed FS, Baumhauer H, Budoff M, Carr JJ, Kronmal R, Reddy S, Barr RG
(2014) Ann Am Thorac Soc 11: 898-907
MeSH Terms: Age Distribution, Aged, Aged, 80 and over, Ethnic Groups, Female, Follow-Up Studies, Humans, Lung Volume Measurements, Male, Middle Aged, Population Surveillance, Prevalence, Prospective Studies, Pulmonary Emphysema, Reference Values, Sex Distribution, Tomography, X-Ray Computed, United States
Show Abstract · Added October 10, 2014
RATIONALE - Computed tomography (CT)-based lung density is used to quantitate the percentage of emphysema-like lung (hereafter referred to as percent emphysema), but information on its distribution among healthy nonsmokers is limited.
OBJECTIVES - We evaluated percent emphysema and total lung volume on CT scans of healthy never-smokers in a multiethnic, population-based study.
METHODS - The Multi-Ethnic Study of Atherosclerosis (MESA) Lung Study investigators acquired full-lung CT scans of 3,137 participants (ages 54-93 yr) between 2010-12. The CT scans were taken at full inspiration following the Subpopulations and Intermediate Outcome Measures in COPD Study (SPIROMICS) protocol. "Healthy never-smokers" were defined as participants without a history of tobacco smoking or respiratory symptoms and disease. "Percent emphysema" was defined as the percentage of lung voxels below -950 Hounsfield units. "Total lung volume" was defined by the volume of lung voxels.
MEASUREMENTS AND MAIN RESULTS - Among 854 healthy never-smokers, the median percent emphysema visualized on full-lung scans was 1.1% (interquartile range, 0.5-2.5%). The percent emphysema values were 1.2 percentage points higher among men compared with women and 0.7, 1.2, and 1.2 percentage points lower among African Americans, Hispanics, and Asians compared with whites, respectively (P < 0.001). Percent emphysema was positively related to age and height and inversely related to body mass index. The findings were similar for total lung volume on CT scans and for percent emphysema defined at -910 Hounsfield units and measured on cardiac scans. Reference equations to account for these differences are presented for never, former and current smokers.
CONCLUSIONS - Similar to lung function, percent emphysema varies substantially by demographic factors and body size among healthy never-smokers. The presented reference equations will assist in defining abnormal values for percent emphysema and total lung volume on CT scans, although validation is pending.
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18 MeSH Terms