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. Author manuscript; available in PMC: 2012 Aug 22.

Published in final edited form as: J Nucl Med. 2011 Dec 12;53(1):29–36. doi: 10.2967/jnumed.111.092387

TABLE 3.

Cox Regression Analysis of OS and PFS of Predictive Factors

Predictive factor	OS				PFS
	Univariate		Multivariate		Univariate		Multivariate
	P	HR	P	HR	P	HR	P	HR
Age	0.939				0.325

No. of recurrences	0.001	2.243	0.645		0.001	2.044	0.267

Baseline KPS	0.06				0.915

Dexamethasone treatment	0.176				0.731

Tumor size change by MRI	0.016	3.220	0.382		0.003	4.151	0.054

Lack of ¹⁸F-FLT reduction, 0–2 wk	0.001	5.416	0.795		0.024	2.590	0.264

Lack of ¹⁸F-FLT reduction, 0–6 wk	<0.001	7.869	<0.001	10.051	0.001	5.225	0.001	5.636

Lack of ¹⁸F-FLT increase, 2–6 wk	0.001	5.739	0.674		0.009	3.197	0.833