# Comparing model with real data **URL:** \ **Category:** General DSGE Modeling\ **Created:** [16 January 2018 01:36 UTC](https://forum.dynare.org/t/comparing-model-with-real-data/11221 "2018-01-16T01:36:53Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\ **Post date:** [17 January 2018 14:23 UTC](https://forum.dynare.org/t/comparing-model-with-real-data/11221/4 "2018-01-17T14:23:12Z")
No. Variables not in logs are usually not in percent and thus cannot be interpreted as percentage deviations. There are several ways out. I would suggest option 3 in > [@Question about understanding irfs in dynare](https://forum.dynare.org/t/question-about-understanding-irfs-in-dynare/10622/4): > > To be more precise: it depends on how the variables in your model are measured. As @stepan-a says, Dynare conducts a linearization. If you for example have a nonlinear model and your model variable is simply the level of output, the IRF will measure the difference between the variable and its steady state (or its mean at higher order). This is the case with [https://github.com/DynareTeam/dynare/blob/master/examples/example1.mod](https://github.com/DynareTeam/dynare/blob/master/examples/example1.mod) In contrast, if your model variable already measures percentage… --- _[View the full topic](https://forum.dynare.org/t/comparing-model-with-real-data/11221)._