Years Since PurchaseCost Per EvalEval Response RateCost Per Eval
3 Years9.60%4.43%$13.68
4 Years8.69%3.93%$14.99
5 Years6.37%2.83%$19.51
6 Years4.64%1.06%$61.96
7+ Years2.73%0.82%$73.55

Darwill Analysis Findings:

Patients response dropped off significantly after 7 years. Indicating that as the optimal time to segment the data for different messaging.