What Is Perfect Health to an 85-Year-Old?: Evidence for Scale Recalibration in Subjective Health Ratings

Langa, Kenneth M; Fagerlin, Angela Tsai; Ubel, Peter A; Jankovic, Aleksandra; Smith, Dylan. (2005). What Is Perfect Health to an 85-Year-Old?: Evidence for Scale Recalibration in Subjective Health Ratings. Medical care. 43(10), 1054-1057.