Tarsney, Christian; Geruso, Michael; Spears, Dean (2023). "Egyptians, Aliens, and Okies: Against the Sum of Averages". Utilitas. 35 (4): 320–326. doi:10.1017/S0953820823000225. what statisticians call the "Okie paradox", named for Will Rogers' joke
Feinstein AR, Sosin DM, Wells CK (June 1985). "The Will Rogers phenomenon. Stage migration and new diagnostic techniques as a source of misleading statistics for survival in cancer". The New England Journal of Medicine. 312 (25): 1604–8. doi:10.1056/NEJM198506203122504. PMID4000199.
Feinstein AR, Sosin DM, Wells CK (June 1985). "The Will Rogers phenomenon. Stage migration and new diagnostic techniques as a source of misleading statistics for survival in cancer". The New England Journal of Medicine. 312 (25): 1604–8. doi:10.1056/NEJM198506203122504. PMID4000199.