A two-stage super learner for healthcare expenditures.
Ziyue WuSeth A BerkowitzPatrick J HeagertyDavid C BenkeserPublished in: Health services & outcomes research methodology (2022)
Our results indicate that the two-stage super learner has better performance compared with a one-stage super learner and individual algorithms, for healthcare cost estimation under a wide variety of settings in simulations and in empirical analyses. The improvement of the two-stage super learner over the one-stage super learner was particularly evident in settings when zero-inflation is high.