Key points are not available for this paper at this time.
Michael D. Hurd, Kathleen McGarry, Evaluation of the Subjective Probabilities of Survival in the Health and Retirement Study, The Journal of Human Resources, Vol. 30, Special Issue on the Health and Retirement Study: Data Quality and Early Results (1995), pp. S268-S292
Hurd et al. (Sun,) studied this question.