Yi Lu

5 Questions 7 Answers 0 Followers

Questions related from Yi Lu

Recommendation on good reading material for sensitivity analysis?

Hello everyone, I often see certain sensitivity analyses in journal articles but my understanding is limited within a certain topic (e.g. common sensitivity analyses for air pollution and health...

09 September 2017 9,311 4 View

Using Poisson/Cox regression in cross-sectional study?

As Barros and Hirakata (2003) suggested in their article, Poisson regression and Cox regression with robust variance gave the best estimate of RR in a cross-sectional study design. When using...

08 August 2017 6,297 7 View

What if # of control is less than # of case in a c-c study?

We are using the hospital data to conduct a case-control study where our case will be children visited hospital due to respiratory diseases and control will be children visited hospital due to...

08 August 2017 3,819 13 View

How do we interpret interaction when it's significant on both additive and multiplicative scale?

Hello All, One of our projects was looking at the potential interaction between an environmental factor and socioeconomic factors on a birth defect. As recommended by the tutorial (Vanderweele and...

08 August 2017 6,149 2 View

Why use Spearman correlation to assess correlation between air pollutants?

Among air pollution paper I read recently, it seems to me that Spearman correlation is used more often to test the correlation between air pollutants, PM2.5 constituents, and meteorological...

01 January 1970 2,142 5 View