Relative measures of effect

Attributable risk measures are not replacements for relative measures of effect; rather, they provide a public health dimension to the appraisal of risks. Identification of a certain exposure with a high rate ratio may yield important clues to disease etiology. Yet, if this same exposure is rare in the population so that the PAR% is small, policy makers and administrators with limited health dollars will probably not rate it as a priority. The PAR% thus provides an important link between causality and public health action. www.ox.ac.uk

The idea of change and comparison : The pear world was the same, only completely different. The remainder of the slush doesn’t look great, but the first snowfall is always magical. The world really does seem remade, so different from what it usually looks like that it almost hard to remember what you think of as normal in the first place. I hope there’s something about that idea of change and comparison that will help us with this passage from 2 Corinthians tonight. It’s all about change; all about comparing what for Paul is the trusted old faith of Moses with the new bright white snowfall that is the Christian faith. We need to do a bit of digging around in the Old Testament to understand what Paul is saying here, but I hope it’ll be worth it as we see what excites him and energises him about being a Christian. So let’s begin by looking at the first passage, from Exodus. This recounts an absolutely central moment in the faith of the Jews: the time when Moses came down the mountain with the tablets of stone, with the commandments engraved on them. Having met face to face with God, Moses came ‘with the two tablets of the covenant in his hand’, the laws of God chiselled out for all to see. This was for them perhaps the high point of the whole of what we call the Old Testament. Moses brought with him a physical token that God had chosen this people and called them to live with a distinctive moral code - they were special. And on top of that, they could see the difference in Moses: his face shone after his encounter with God. He had been changed.
The Freedom of the Spirit
Exodus 34: 29-35, 2 Corinthians 3:7-18, SHC EP Wk 5
live.sthughs.ox.ac.uk/assets/File/Word_Documents/Freedom_of_the_Spirit.doc