Seasonal incidence of hospital admissions for Stanford type A aortic dissection

Efird, Jimmy T.; O’Neal, Wesley T.; Davies, Stephen; O’Neal, Jason B.; Kypson, Alan P.

doi:10.3109/07420528.2014.933842

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…This was a natural history (non-experimental) analysis of an archival de-identified dataset, in consent with the Declaration of Helsinki. Details of the study database and methodology have been previously described and are briefly summarized below [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Methodsmentioning

confidence: 99%

Increased Long-Term Mortality among Black CABG Patients Receiving Preoperative Inotropic Agents

Efird

Griffin

Sarpong

et al. 2015

IJERPH

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The aim of this study was to examine racial differences in long-term mortality after coronary artery bypass grafting (CABG), stratified by preoperative use of inotropic agents. Black and white patients who required preoperative inotropic support prior to undergoing CABG procedures between 1992 and 2011 were compared. Mortality probabilities were computed using the Kaplan-Meier product-limit method. Hazard ratios (HR) and 95% confidence intervals (CI) were computed using a Cox regression model. A total of 15,765 patients underwent CABG, of whom 211 received preoperative inotropic agents within 48 hours of surgery. Long-term mortality differed by race (black versus white) among preoperative inotropic category (inotropes: adjusted HR = 1.6, 95% CI = 1.009–2.4; no inotropes: adjusted HR = 1.15, 95% CI = 1.08–1.2; Pinteraction < 0.0001). Our study identified an independent preoperative risk-factor for long-term mortality among blacks receiving CABG. This outcome provides information that may be useful for surgeons, primary care providers, and their patients.

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Section: Methodsmentioning

confidence: 99%

Increased Long-Term Mortality among Black CABG Patients Receiving Preoperative Inotropic Agents

Efird

Griffin

Sarpong

et al. 2015

IJERPH

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show abstract

“…Of 232 potentially relevant publications initially screened, 10 eligible studies 1–10 were identified (Table 1). The mean of atmospheric temperature/pressure 1–4,6–8,10 and relative humidity 1–4,6,10 on the days with AAA and controls was available in eight studies, and the OR for AAD per unit increment of atmospheric temperature/pressure 5,7,9,10 and relative humidity 10 was reported in four studies. The OR per 1 mmHg and 1 hPa increment of pressure was converted into that per 1 kPa increment using the standard formula.…”

mentioning

confidence: 99%

Colder is worse? Meteorology of acute aortic dissection

Takagi

Hari

Nakashima

et al. 2020

European Journal of Preventive Cardiology

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Analyzing Seasonal Variations in Suicide With Fourier Poisson Time-Series Regression: A Registry-Based Study From Norway, 1969–2007

Bramness¹,

Walby²,

Morken³

et al. 2015

Am. J. Epidemiol.

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Seasonal variation in the number of suicides has long been acknowledged. It has been suggested that this seasonality has declined in recent years, but studies have generally used statistical methods incapable of confirming this. We examined all suicides occurring in Norway during 1969-2007 (more than 20,000 suicides in total) to establish whether seasonality decreased over time. Fitting of additive Fourier Poisson time-series regression models allowed for formal testing of a possible linear decrease in seasonality, or a reduction at a specific point in time, while adjusting for a possible smooth nonlinear long-term change without having to categorize time into discrete yearly units. The models were compared using Akaike's Information Criterion and analysis of variance. A model with a seasonal pattern was significantly superior to a model without one. There was a reduction in seasonality during the period. Both the model assuming a linear decrease in seasonality and the model assuming a change at a specific point in time were both superior to a model assuming constant seasonality, thus confirming by formal statistical testing that the magnitude of the seasonality in suicides has diminished. The additive Fourier Poisson time-series regression model would also be useful for studying other temporal phenomena with seasonal components.

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Seasonal incidence of hospital admissions for Stanford type A aortic dissection

Cited by 5 publications

References 38 publications

Increased Long-Term Mortality among Black CABG Patients Receiving Preoperative Inotropic Agents

Increased Long-Term Mortality among Black CABG Patients Receiving Preoperative Inotropic Agents

Colder is worse? Meteorology of acute aortic dissection

Analyzing Seasonal Variations in Suicide With Fourier Poisson Time-Series Regression: A Registry-Based Study From Norway, 1969–2007

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