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. Author manuscript; available in PMC: 2015 Jun 17.
Published in final edited form as: Gynecol Oncol. 2009 Oct 22;116(1):44–49. doi: 10.1016/j.ygyno.2009.09.006

TABLE 4.

Validation of Prognostic Model

Internal Validation (GOG 110, 169 and 179) External Validation (GOG 149)
Response Rate (%) Median Survival (months) Response Rate (%) Median Survival (months)
Estimated Observed PFS OS Predicted Observed PFS OS
Low-Risk 50.6 47.3 6.34 11.10 50.9 42.6 6.87 11.93
Mid-Risk 29.4 31.4 4.60 9.17 29.0 29.4 4.44 7.59
High-Risk 13.0 9.8 2.79 5.49 13.5 14.3 3.38 5.58

Low risk: 0–1 risk factor; mid risk: 2–3 risk factors; and high risk: 4–5 risk factors.