Japan Household Panel Survey (JHPS/KHPS) Sampling Weights
Sampling weights are used to make inferences about the target population based on a specific sample. Given the importance of weighting survey observations when drawing inferences about the overall population, this paper documents the calculation of sampling weights for the Japan Household Panel Survey (JHPS/KHPS). First, we provide an overview of the sample design and structure of the JHPS/KHPS. This information is then used as a base to define the strategy adopted in the weight calculation process. Next, the integrated approach used to compute sampling weights for the initial fourteen waves (2004-2017) of the JHPS/KHPS and the different types of weights available are introduced. Finally, we provide advice on how the weights should be used and illustrate their effectiveness by comparing unweighted and weighted JHPS data with official statistics.