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Conditional Poisson models: a flexible alternative to conditional logistic case cross-over analysis.
Armstrong BG, Gasparrini A, Tobias A. Armstrong BG, et al. BMC Med Res Methodol. 2014 Nov 24;14:122. doi: 10.1186/1471-2288-14-122. BMC Med Res Methodol. 2014. PMID: 25417555 Free PMC article.
BACKGROUND: The time stratified case cross-over approach is a popular alternative to conventional time series regression for analysing associations between time series of environmental exposures (air pollution, weather) and counts of health outcomes. ...It has been establi …
BACKGROUND: The time stratified case cross-over approach is a popular alternative to conventional time series regression for analysin …
How the weather affects the pain of citizen scientists using a smartphone app.
Dixon WG, Beukenhorst AL, Yimer BB, Cook L, Gasparrini A, El-Hay T, Hellman B, James B, Vicedo-Cabrera AM, Maclure M, Silva R, Ainsworth J, Pisaniello HL, House T, Lunt M, Gamble C, Sanders C, Schultz DM, Sergeant JC, McBeth J. Dixon WG, et al. NPJ Digit Med. 2019 Oct 24;2:105. doi: 10.1038/s41746-019-0180-3. eCollection 2019. NPJ Digit Med. 2019. PMID: 31667359 Free PMC article.
Scientific evidence to support their beliefs is inconclusive, in part due to difficulties in getting a large dataset of patients frequently recording their pain symptoms during a variety of weather conditions. ...These results will act as a starting point for …
Scientific evidence to support their beliefs is inconclusive, in part due to difficulties in getting a large dataset of patients freq …
On the relationship between smoking bans and incidence of acute myocardial infarction.
Gasparrini A, Gorini G, Barchielli A. Gasparrini A, et al. Eur J Epidemiol. 2009;24(10):597-602. doi: 10.1007/s10654-009-9377-0. Epub 2009 Aug 1. Eur J Epidemiol. 2009. PMID: 19649714
During the last few years several studies have reported a substantial reduction of acute myocardial infarction (AMI) in the general population few months after the enforcement of comprehensive smoking bans. ...The analysis was performed with a Poisson model of the m …
During the last few years several studies have reported a substantial reduction of acute myocardial infarction (AMI) in the general p …
Time series analysis on the health effects of temperature: advancements and limitations.
Gasparrini A, Armstrong B. Gasparrini A, et al. Environ Res. 2010 Aug;110(6):633-8. doi: 10.1016/j.envres.2010.06.005. Epub 2010 Jun 23. Environ Res. 2010. PMID: 20576259
This assessment is usually based on a time series design, a framework which has gained a substantial development in the last two decades. In this contribution we offer an overview of the recent methodological advancements which provide new statistical tools t …
This assessment is usually based on a time series design, a framework which has gained a substantial development in the …
Distributed lag non-linear models.
Gasparrini A, Armstrong B, Kenward MG. Gasparrini A, et al. Stat Med. 2010 Sep 20;29(21):2224-34. doi: 10.1002/sim.3940. Stat Med. 2010. PMID: 20812303 Free PMC article.
This methodology is based on the definition of a 'cross-basis', a bi-dimensional space of functions that describes simultaneously the shape of the relationship along both the space of the predictor and the lag dimension of its occurrence. In this way the approach pr …
This methodology is based on the definition of a 'cross-basis', a bi-dimensional space of functions that describes simultaneou …
Distributed Lag Linear and Non-Linear Models in R: The Package dlnm.
Gasparrini A. Gasparrini A. J Stat Softw. 2011 Jul;43(8):1-20. J Stat Softw. 2011. PMID: 22003319 Free PMC article.
Distributed lag non-linear models (DLNMs) represent a modeling framework to flexibly describe associations showing potentially non-linear and delayed effects in time series data. This methodology rests on the definition of a crossbasis, a bi-dimensional funct …
Distributed lag non-linear models (DLNMs) represent a modeling framework to flexibly describe associations showing potentially non-li …
Multivariate meta-analysis for non-linear and other multi-parameter associations.
Gasparrini A, Armstrong B, Kenward MG. Gasparrini A, et al. Stat Med. 2012 Dec 20;31(29):3821-39. doi: 10.1002/sim.5471. Epub 2012 Jul 16. Stat Med. 2012. PMID: 22807043 Free PMC article.
As an illustrative example, we propose a two-stage analysis for investigating the non-linear exposure-response relationship between temperature and non-accidental mortality using time-series data from multiple cities. Multivariate meta-analysis represents a useful a …
As an illustrative example, we propose a two-stage analysis for investigating the non-linear exposure-response relationship between t …
Reducing and meta-analysing estimates from distributed lag non-linear models.
Gasparrini A, Armstrong B. Gasparrini A, et al. BMC Med Res Methodol. 2013 Jan 9;13:1. doi: 10.1186/1471-2288-13-1. BMC Med Res Methodol. 2013. PMID: 23297754 Free PMC article.
BACKGROUND: The two-stage time series design represents a powerful analytical tool in environmental epidemiology. Recently, models for both stages have been extended with the development of distributed lag non-linear models (DLNMs), a methodology for investigating s …
BACKGROUND: The two-stage time series design represents a powerful analytical tool in environmental epidemiology. Recently, models fo …
Time series regression studies in environmental epidemiology.
Bhaskaran K, Gasparrini A, Hajat S, Smeeth L, Armstrong B. Bhaskaran K, et al. Int J Epidemiol. 2013 Aug;42(4):1187-95. doi: 10.1093/ije/dyt092. Epub 2013 Jun 12. Int J Epidemiol. 2013. PMID: 23760528 Free PMC article.
The effect of the late 2000s financial crisis on suicides in Spain: an interrupted time-series analysis.
Lopez Bernal JA, Gasparrini A, Artundo CM, McKee M. Lopez Bernal JA, et al. Eur J Public Health. 2013 Oct;23(5):732-6. doi: 10.1093/eurpub/ckt083. Epub 2013 Jun 25. Eur J Public Health. 2013. PMID: 23804080
Segmented regression with a seasonally adjusted quasi-Poisson model was used for the analysis. Stratified analyses were performed to establish whether the effect of the crisis on suicides varied by region, sex and age group. RESULTS: The mean monthly suicide rate in Spain …
Segmented regression with a seasonally adjusted quasi-Poisson model was used for the analysis. Stratified analyses were performed to …
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