Table 3.

Threshold analyses of scenarios in which the QALE of AS is equal to/better than WW. WW remains less expensive than AS under every reasonable scenario modeled (please see text).

Model parameter	Base case (AS)	Threshold value at which AS’ QALE is equal to/better than WW's
65 year old men
Hazard ratio prostate cancer-specific death for treatment vs. AS	1.85	≥7.71
Lifetime probability of being treated on AS	78%	≤63%
Utility of AS at which AS favored over WW	0.83	≤0.87
75 year old men
Hazard ratio prostate cancer-specific death for treatment vs. AS	1.85	≥4.30
Lifetime probability of being treated on AS	61%	≤42%
Utility of AS at which AS favored over WW	0.83	≥0.84