Chapter 4: Use of Weights to combine Data across Countries and Rounds

Most users of ESS data will want results based on samples that represent the country or group of countries they are interested in as closely as possible. This means that the most accurate estimates will only be obtained after first weighting the data.

The two weights present in each round of the ESS are the Design weight (DWEIGHT) and the Population size weight (PWEIGHT):

These two weights should almost always be used when analysing ESS data. Furthermore, when combining data from several rounds, further measures need to be taken. This chapter will describe in detail when and how the weights should be used.

Go to next page >>