scholarly journals Incidence of diseases primarily affecting the skin by age group: population-based epidemiologic study in Olmsted County, Minnesota, and comparison with age-specific incidence rates worldwide

2018 ◽  
Vol 57 (9) ◽  
pp. 1021-1034 ◽  
Author(s):  
Laurel L. Wessman ◽  
Louise K. Andersen ◽  
Mark D. P. Davis
Keyword(s):  
Epidemiologic Study ◽  
Population Based ◽  
Incidence Rates ◽  
Age Group ◽  
Olmsted County ◽  
Group Population

Incidence of Skull Fractures in Olmsted County, Minnesota

Neurosurgery ◽  
1984 ◽  
Vol 15 (3) ◽  
pp. 318-324 ◽  
Author(s):  
Evan Lloyd Nelson ◽  
Joseph L. Melton ◽  
John F. Annegers ◽  
Edward R. Laws ◽  
Kenneth P. Offord
Keyword(s):  
Rural Areas ◽  
Motor Vehicle ◽  
Skull Fracture ◽  
Age Groups ◽  
The Elderly ◽  
Population Based ◽  
Incidence Rates ◽  
Skull Fractures ◽  
Olmsted County ◽  
Type Motor

Abstract Between 1935 and 1974, 3598 episodes of head trauma among Olmsted County, Minnesota, residents resulted in 1097 skull fractures. Of these, 53% were simple, 16% were depressed, 12% were compound, and 19% were basilar. The age- and sex-adjusted incidence of skull fractures was 44.3 per 100,000 person-years overall, was somewhat greater in the urban than in the rural areas of Olmsted County, and was relatively stable for the final 30 years of the study. Age-specific incidence rates were highest for the very young, and simple linear fractures were the predominant type of skull fracture in this age group and among the elderly. The male:female ratio of incidence rates varied from 2.1:1 to 4.5:1 depending on fracture type. Motor vehicle accidents accounted for 38% of the skull fractures and were a particularly important cause among young males. Falls accounted for 37% of the skull fractures and were the major cause of fractures in the elderly and pediatric age groups. The results of this population-based study may be helpful in formulating recommendations for the evaluation and management of head-injured patients.

Epidemiology of incident chlamydia and gonorrhoea infections and population attributable fractions associated with living in the inner-core of Winnipeg, Canada

2016 ◽  
Vol 28 (6) ◽  
pp. 550-557 ◽  
Author(s):  
Souradet Y Shaw ◽  
Deborah L Nowicki ◽  
Erin Schillberg ◽  
Christopher G Green ◽  
Craig P Ross ◽  
...  
Keyword(s):  
Inner Core ◽  
Disease Risk ◽  
Population Attributable Fraction ◽  
Population Based ◽  
Incidence Rates ◽  
Age Group ◽  
Complex Processes ◽  
Population Attributable Fractions ◽  
Attributable Fractions ◽  
Health Significance

Population attributable fractions help to convey public health significance of differential disease risk for chlamydia and gonorrhoea. Geographical residence serves as a useful proxy for complex processes creating ill health. Using population-based data, Poisson regression models were used to examine factors associated with chlamydia and gonorrhoea incidence. Population attributable fractions due to residency in the Winnipeg Health Region’s inner-core were determined for chlamydia/gonorrhoea infections among 15–59-year olds (2005–2013), stratified by age group. For both chlamydia and gonorrhoea, it was found that the 15–24-year old age group had the highest incidence rates. There was also a stronger association between residency in the inner-core and incidence for gonorrhoea, compared to chlamydia. Overall, 24% (95% CI: 12–34%) of chlamydia infections were attributable to residency in the inner-core, compared to 46% (95% CI: 35–54%) for gonorrhoea ( p < .05). Within chlamydia/gonorrhoea, no statistically significant differences in population attributable fraction were observed by age group. The conclusion was that a concentration of efforts towards inner-core residents with gonorrhoea infections may result in a relatively larger decrease in incidence.

scholarly journals A60 THE INCIDENCE OF INFLAMMATORY BOWEL DISEASE IS DECREASING IN SASKATCHEWAN: A POPULATION-BASED COHORT STUDY

2020 ◽  
Vol 3 (Supplement_1) ◽  
pp. 71-73
Author(s):  
J A Osei ◽  
J Peña-Sánchez ◽  
S Fowler ◽  
N Muhajarine ◽  
G G Kaplan ◽  
...  
Keyword(s):  
Health Care ◽  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Population Based ◽  
Incidence Rates ◽  
Age Group ◽  
Newly Diagnosed ◽  
Average Annual Incidence ◽  
Inflammatory Bowel ◽  
Group Sex

Abstract Background Canada has one of the highest inflammatory bowel disease (IBD) incidence rates worldwide, although within Canada rates vary. Evidence show increasing incidence rates of IBD in Ontario (i.e. adults aged 30–60), stable in Alberta and decreasing in Manitoba. Additionally, higher incident rates of IBD have been identified among urban regions compared to rural regions. There is limited data on the incidence of IBD in Saskatchewan. Aims The study objectives were to 1) estimate IBD incidence rates in Saskatchewan from 1999 to 2016, and 2) test for differences in IBD incidence rates for rural and urban regions of Saskatchewan. Methods A population-based study was conducted using linked provincial administrative health databases. Individuals age 18+ old with newly diagnosed Crohn’s disease (CD) or ulcerative colitis (UC) were identified using a validated case definition. Generalized linear models with a negative binomial distribution were used to estimate incidence rates and incidence rate ratios (IRR) adjusted for age group, sex, and rurality with 95% confidence intervals (95%CI). Results In total, 4,908 newly diagnosed individuals with IBD were included. The average annual incidence rate of IBD decreased from 75 (95%CI 67–84) per 100,000 people in 1999 to 15 (95%CI 12–18) per 100,000 population in 2016. This decrease was evident in both UC (from 36/100,000 [95%CI 31–42] in 1999 to 6/100,000 [95%CI 4–8] in 2016) and CD (37/100,000 [95%CI 32–42] in 1999 to 8/100,000 [95%CI 6–10] in 2016). A significant decline of 6.9% (95%CI 6.2–7.6) in the average annual incidence of IBD was estimated between 1999 and 2016 (see Figure 1). Urban residents had a greater overall risk of IBD (IRR=1.19, 95%CI 1.11–1.27) than rural residents. This risk difference was statistically significant for CD (IRR=1.25, 95%CI 1.14–1.36), but not UC (IRR=1.08, 95%CI 0.97–1.19). Conclusions A decreasing trend in IBD incidence in Saskatchewan was identified after adjusting for age group, sex, and rural/urban region of residence. Around 150 new cases of IBD are still diagnosed annually in Saskatchewan, but this estimate is lower than estimates from other provinces. Urban dwellers have a 25% higher risk of CD onset compared to their rural counterparts. This finding could suggest the presence of specific risk factors in urban settings that require further investigation. Health care providers and decision-makers should plan IBD-specific health care programs taking into account these specific IBD rates in Saskatchewan. Funding Agencies College of Medicine, University of Saskatchewan

scholarly journals Increased Incidence and Impact of Upper and Lower Gastrointestinal Events in Patients with Rheumatoid Arthritis in Olmsted County, Minnesota: A Longitudinal Population-based Study

2012 ◽  
Vol 39 (7) ◽  
pp. 1355-1362 ◽  
Author(s):  
ELENA MYASOEDOVA ◽  
ERIC L. MATTESON ◽  
NICHOLAS J. TALLEY ◽  
CYNTHIA S. CROWSON
Keyword(s):  
Rheumatoid Arthritis ◽  
Rate Ratio ◽  
Population Based ◽  
Incidence Rates ◽  
Olmsted County ◽  
Calendar Time ◽  
Upper Gi ◽  
American College Of Rheumatology ◽  
Increased Risk ◽  
Incidence And Mortality

Objective.To assess the incidence and mortality impact of upper and lower gastrointestinal (GI) events in rheumatoid arthritis (RA) compared to non-RA subjects.Methods.We identified incident upper and lower GI events and estimated their incidence rates using person-year methods in a population-based incident RA cohort of residents of Olmsted County, Minnesota, USA (1987 American College of Rheumatology criteria first fulfilled between January 1, 1980, and January 1, 2008) and non-RA subjects from the same population.Results.The study included 813 patients with RA and 813 non-RA subjects (mean followup 10.3 and 10.8 yrs, respectively); 68% women; mean age 55.9 yrs in both cohorts. The rate of upper GI events/100 person-years was 2.9 in RA versus 1.7 in the non-RA cohort (rate ratio 1.7, 95% CI 1.4, 2.2); for lower GI events, the rates were 2.1 in RA versus 1.4 in the non-RA cohort (rate ratio 1.5, 95% CI 1.1, 1.9). The incidence of upper GI bleed, perforation, ulcer, obstruction, and any upper GI event in RA declined over calendar time; the incidence of lower GI events remained unchanged. Exposure to glucocorticoids, prior upper GI disease, abdominal surgery, and smoking were associated with lower GI events in RA. Both upper and lower GI events were associated with increased mortality risk in RA.Conclusion.There is increased risk of serious upper and lower GI events in RA compared to non-RA subjects, and increased GI-related mortality in RA. Prominent declines in incidence of upper, but not lower GI events in RA highlight the need for studies investigating lower GI disease in patients with RA.

scholarly journals Population-Based Age Group Specific Annual Incidence Rates of Symptomatic Age-Related Macular Degeneration

2014 ◽  
Vol 8 (1) ◽  
pp. 95-100 ◽  
Author(s):  
Jukka M Saari
Keyword(s):  
Macular Degeneration ◽  
Population Based ◽  
Incidence Rates ◽  
Annual Incidence ◽  
Age Related Macular Degeneration ◽  
Age Group ◽  
Population Based Study ◽  
Hospital District ◽  
Age Related ◽  
One Year

Purpose To study the population-based annual incidence rates of exudative, dry and all cases of symptomatic age-related macular degeneration (AMD) in different age and sex groups. Methods. This is a one year, prospective, population-based study on all consecutive new patients with AMD in the hospital district of Central Finland. The diagnosis was confirmed in all patients with slit lamp biomicroscopy, optical coherence tomography (OCT) using a Spectralis HRA + OCT device, and the Heidelberg Eye Explorer 1.6.2.0 program. Fluorescein angiograms were taken when needed. Results. The population-based annual incidence rates of all cases of symptomatic AMD increased from 0.03% (95% CI, 0.01-0.05%) in the age group 50-59 years to 0.82% (95% CI, 0.55-1.09%) in the age group 85-89 years and were 0.2% (95% CI, 0.17-0.24%) in exudative, 0.11% (95% CI, 0.09-0.14%) in dry, and 0.32% (95% CI, 0.28-0.36%) in all cases of AMD in the age group 60 years and older. During the next 20 years in Central Finland the population-based annual incidence rates can be estimated to increase to 0.27% (95% CI, 0.24-0.30%) in exudative, to 0.13% (95% CI, 0.11-0.15%) in dry, and to 0.41% (95% CI, 0.37-0.45%) in all cases of AMD in the age group 60 years and older. The population-based annual incidence of AMD did not show statistically significant differences between males and females (p>0.1). Conclusion: The population-based age-group specific annual incidence rates of symptomatic AMD of this study may help to plan health care provision for patients of AMD.

scholarly journals Changes in Hysterectomy Route and Adnexal Removal for Benign Disease in Australia 2001–2015: A National Population-Based Study

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Natalie De Cure ◽  
Stephen J. Robson
Keyword(s):  
Age Groups ◽  
Laparoscopic Hysterectomy ◽  
Abdominal Hysterectomy ◽  
Population Based ◽  
Incidence Rates ◽  
Older Age ◽  
Age Group ◽  
Female Population ◽  
Younger Women ◽  
Younger Age

Objective. Hysterectomy rates have fallen over recent years and there remains debate whether salpingectomy should be performed to reduce the lifetime risk of ovarian cancer. We examined trends in adnexal removal and route of hysterectomy in Australia between 2001 and 2015. Methods. Data were obtained from the national procedural dataset for hysterectomy approach (vaginal, VH; abdominal, AH; and, laparoscopic, LH) and rates of adnexal removal, as well as endometrial ablation. The total female population in two age groups (“younger age group,” 35 to 54 years, and “older age group,” 55 to 74 years) was obtained from the Australian Bureau of Statistics. Results. The rate of hysterectomy fell in both younger (61.7 versus 45.2/10000/year, p<0.005) and older (38.8 versus 33.2/10000/year, p<0.005) age groups. In both age groups there were significant decreases in the incidence rates for VH (by 53% in the younger age group and 29% in the older age group) and AH (by 53% and 55%, respectively). The rates of LH increased by 153% in the younger age group and 307% in the older age group. Overall, the proportion of hysterectomies involving adnexal removal increased (31% versus 65% in the younger age group, p<0.005; 44% versus 58% in the older age group, p<0.005). The increase occurred almost entirely after 2011. Conclusion. Hysterectomy is becoming less common, and both vaginal and abdominal hysterectomy are being replaced by laparoscopic hysterectomy. Removal of the adnexae is now more common in younger women.

The Effect of Patient Age and Calendar Year on the Incidence of Idiopathic vs. Secondary Venous Thromboembolism (VTE): A Population-Based Cohort Study.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 3516-3516
Author(s):  
Catie E. Kobbervig ◽  
John A. Heit ◽  
Tanya M. Petterson ◽  
Teresa J. Christianson ◽  
Kent R. Bailey ◽  
...  
Keyword(s):  
Risk Factors ◽  
Medical Records ◽  
Clinical Characteristics ◽  
Population Based ◽  
Incidence Rates ◽  
Olmsted County ◽  
Inception Cohort ◽  
Rochester Epidemiology Project ◽  
Biology Of Aging ◽  
Adjusted Incidence

Abstract If the observed dramatic increase in VTE incidence with advancing age is due to increased VTE risk factor exposure (i.e., secondary VTE), the incidence of idiopathic VTE should not vary with age or calendar year. Objective: To estimate the incidence of idiopathic and secondary VTE by age and by calendar year. Methods: Using the resources of the Rochester Epidemiology Project, we identified the inception cohort of Olmsted County, MN, residents with a first lifetime VTE during the 30-year period, 1966–1995 (n=2761). For each case, we reviewed the complete medical records in the community for 48 baseline clinical characteristics that are commonly-accepted risk factors for VTE. We categorized VTE cases as idiopathic (n=305) if no such characteristics were present; the remaining cases were categorized as secondary. Age- and sex-specific incidence rates were calculated using idiopathic or secondary VTE cases as the numerator, and age-, sex- and calendar year-specific estimates of the population of Olmsted County as the denominator. Results: The incidence of both idiopathic and secondary VTE increased exponentially with age for both men and women (p<0.001). Over the 30-year study period, the age-adjusted incidence of idiopathic VTE was essentially constant among men (from 19.0 to 17.1 per 100,000 men-years for 1966–70 and 1990–95, respectively), but decreased markedly among women (from 18.5 to 3.6 per 100,000 woman-years for 1966–70 and 1990–95, respectively; p=0.005 for the interaction). Conclusions: The dramatic increase in VTE incidence with age likely reflects the biology of aging, although as yet unidentified VTE risk factors cannot be excluded. The reason for the decreased incidence of idiopathic VTE over the last 30 years among women is unclear.

The Seasonal Incidence of Venous Thromboembolism (VTE): A Population-Based Cohort Study.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 3503-3503
Author(s):  
Catie E. Kobbervig ◽  
John A. Heit ◽  
Tanya M. Petterson ◽  
Teresa J. Christianson ◽  
Kent R. Bailey ◽  
...  
Keyword(s):  
General Pattern ◽  
Population Based ◽  
Incidence Rates ◽  
Onset Date ◽  
P Value ◽  
Olmsted County ◽  
Seasonal Incidence ◽  
Enteroviral Infection ◽  
June July ◽  
Age And Sex

Abstract If the incidence of VTE varies by season, then the etiology of VTE could be related to seasonal exposures. However, the few studies that estimated VTE incidence by season reached conflicting conclusions. Objective: To estimate the incidence of VTE by month and by season of the year. Methods: Using the resources of the Rochester Epidemiology Project, we identified the inception cohort of Olmsted County, MN, residents with a first lifetime VTE over the 30-year period, 1966–1995 (n=2761). For each case, we reviewed the complete medical records in the community for the date of VTE onset, date of birth, gender and 48 baseline clinical characteristics commonly accepted as risk factors for VTE. We categorized cases as idiopathic (n=305) if no such characteristics were present; remaining cases were categorized as secondary. Incidence rates were calculated using the number of overall, idiopathic or secondary VTE cases by month of onset as the numerator, and age- and sex-specific estimates of the monthly population of Olmsted County as the denominator (yearly population estimates divided by 12). Results: The incidence of VTE did not vary appreciably by month of the year for overall, idiopathic or secondary VTE (all p-values >0.2). However, the overall incidence of VTE was higher in the 3 summer months (June, July, August) compared to the 3 winter months (December, January, February; 132.6 vs. 116.9 per 100,000 person-years, respectively, both age- and sex-adjusted to year 2000 U.S. Whites; p-value = 0.026). The same general pattern was true for both idiopathic and secondary VTE, but separately neither was statistically significant (p-value=0.48 and 0.15, respectively). Conclusions: The incidence of VTE is higher in the summer compared to the winter months, suggesting the hypothesis that vector-borne (e.g., mosquito, tick) and/or enteroviral infection may play a role in the etiology of VTE.

scholarly journals Epidemiology of paraneoplastic neurologic syndromes and autoimmune encephalitides in France

2020 ◽  
Vol 7 (6) ◽  
pp. e883 ◽  
Author(s):  
Julien Hébert ◽  
Benjamin Riche ◽  
Alberto Vogrig ◽  
Sergio Muñiz-Castrillo ◽  
Bastien Joubert ◽  
...  
Keyword(s):  
Incidence Rate ◽  
Age Groups ◽  
Epidemiologic Study ◽  
Poisson Model ◽  
Population Based ◽  
Incidence Rates ◽  
Inclusion Criteria ◽  
Reference Center ◽  
Paraneoplastic Neurologic Syndromes

ObjectiveTo determine the observed and expected incidence rates of paraneoplastic neurologic syndromes (PNSs) and autoimmune encephalitides (AEs) diagnosed in France between 2016 and 2018, we conducted a population-based epidemiologic study.MethodsObserved incidence rates were stratified by sex, age groups, region of care, year of diagnosis, and disease subgroups. National expected incidence rates were calculated based on rates obtained in the area directly adjacent to the Reference Center using a mixed Poisson model and compared with observed incidence rates.ResultsSix hundred thirty-two patients with definite PNS or AE met the inclusion criteria. The observed incidence rate of definite PNS and AE in France was 3.2 per million person-years (CI95%: 2.9–3.4) compared with an expected incidence rate of 7.1 per million person-years (CI95%: 3.9–11.4). The national observed incidence rate for the antibody-positive AE subgroup increased from 1.4 per million person-years (CI95%: 1.2–1.7) in 2016 to 2.1 per million person-years (CI95%: 1.7–2.4) in 2018, thus surpassing the incidence rate of classical PNS (1.2 per million person-years [CI95%: 1.0–1.5]) of 2018.ConclusionsThere was a significant widespread year-to-year increase in the incidence of diagnoses registered with the Reference Center for all subgroups of PNS and AE studied. The national observed incidence rate is likely underestimated due to underdiagnosis and underreporting.

scholarly journals Epilepsy in Punjab (India): A Population-Based Epidemiologic Study

2015 ◽  
Vol 45 (4) ◽  
pp. 273-281 ◽  
Author(s):  
Harbag S. Hara ◽  
Ajay Gupta ◽  
Mukhtiar Singh ◽  
Rajnish Raj ◽  
Harminder Singh ◽  
...  
Keyword(s):  
Rural Area ◽  
Age At Onset ◽  
Epidemiologic Study ◽  
Epidemiological Survey ◽  
Population Based ◽  
Incidence Rates ◽  
Cross Sectional ◽  
Clinical Syndromes ◽  
Symptomatic Epilepsy ◽  
Active Epilepsy

Aims: To assess the prevalence of epilepsy in a rural area adjoining a city. Methods: A door-to-door, cross-sectional epidemiological survey was carried out covering an entire rural population of 103,693 people. Results: Crude period and point prevalence rates for active epilepsy were 7.67 and 7.44 per 1,000 respectively. Crude incidence rate was 60.76 per 100,000 during the year 2007. Mean, SD, median and variance were 17.2, 16, 13 and 257.6 years respectively for age at onset of active epilepsy patients. The overall prevalence patterns among males and females were not significantly different. Active epilepsy cases (n = 795) included electro-clinical syndromes and constellations (n = 117, 14.7%), symptomatic epilepsy (n = 153, 19.2%), epilepsy due to unknown cause (n = 513, 64.5%) and dual diagnosis (n = 12, 1.5%). Conclusions: The present study showed that the prevalence rate, in the rural area adjoining a city, was comparable to that of the urban area and significantly less than that of the remote rural area as described by another study. Age- and sex-specific prevalence and incidence rates were similar to the rates reported by other studies. The reason for a lower number of symptomatic cases to be reported, per this study, may be due to lack of neuroimaging.

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