Multilevel Regression and Poststratification
Multilevel regression and poststratification (MRP) estimates opinion or behavior in small subpopulations — states, districts, demographic groups — from a single national survey that is far too small to support direct estimates in each unit. It first fits a multilevel model that predicts the outcome from individual demographic and geographic characteristics, borrowing strength across units through partial pooling, and then poststratifies the predicted values to known population counts of demographic-by-geographic cells. Introduced for state-level opinion by Park, Gelman, and Bafumi (2004) and shown by Lax and Phillips (2009) to outperform disaggregation, MRP has become the standard tool for subnational opinion estimation.
Rekod sumber
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- Park, D. K., Gelman, A., & Bafumi, J. (2004). Bayesian Multilevel Estimation with Poststratification: State-Level Estimates from National Polls. Political Analysis, 12(4), 375–385. · DOI 10.1093/pan/mph024
- Lax, J. R., & Phillips, J. H. (2009). How Should We Estimate Public Opinion in the States? American Journal of Political Science, 53(1), 107–121. · DOI 10.1111/j.1540-5907.2008.00360.x
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