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- Exploring forms of disaggregating Covid-19 data: an examplePublication . Leal, Maria da Conceição Dias; Oliveira, Teresa; Mukherjee, Amitava; Oliveira, AmilcarCOVID-19 data provided by Portuguese public health authorities lack consis tency in periodicity and metrics. To facilitate time series analysis, we transformed those data to achieve homogeneous periodicity and metrics. We present one method we used and assess the potential introduced bias and its impact on spatial distribution models of COVID-19 in Portugal, using spatial and non-spatial models. Comparing models fitted with transformed data to those with observed data for two specific days, we found no clear evidence of a worse fit for the disaggregated data.
- Stochastic response surface methodology: a study in the human health areaPublication . Oliveira, Teresa; Leal, Maria da Conceição Dias; Oliveira, AmilcarIn this paper we review Stochastic Response Surface Methodology as a tool for modeling uncertainty in the context of Risk Analysis. An application in the survival analysis in the breast cancer context is implemented with R software.
- On response surface modelsPublication . Leal, Maria da Conceição Dias; Oliveira, Teresa; Oliveira, Amilcar
- Stochastic response surface methodology: a tool to risk assessmentPublication . Oliveira, Teresa; Leal, Maria da Conceição Dias; Oliveira, Amilcar