Table 5 (b).

Median survival (95% confidence interval) divided by CLIP score and further by VEGF level (<450 vs. >450). The P-values correspond to a test comparing median survival VEGF-high and VEGF-low patients within the specified CLIP score, and the power indicates power to detect a significant difference given the observed sample sizes, assuming the true difference in median survival was the same as the observed difference in these data. Note how VEGF-high patients in a given CLIP group seem to have median survivals more similar to VEGF-low patients in the next CLIP group than VEGF-low patients in their own CLIP group.

		all		VEGF <450		VEGF >450
CLIP		Median Survival		Median Survival		Median Survival
score	n	(months)	n	(months)	n	(months)	P-value	Power
0	55	37.0 (24.8-51.3)	48	37.5 (29.4-68.1)	7	19.5 (9.23-na)	0.10	0.14
1	75	23.1 (17.5-34.2)	64	23.1 (17.5-34.2)	11	18.1 (13.4-38.4)	0.50	0.08
2	77	11.7 (8.3-15.3)	62	12.4 (8.3-17.3)	15	9.6 (4.7-21.7)	0.23	0.10
3	53	7.6 (4.6-9.3)	40	7.8 (6.1-11.7)	13	3.6 (2.3-10.6)	0.05	0.48
4+	25	2.5 (2.2-3.9)	15	4.4 (2.1-12.6)	10	2.5 (0.9-2.7)	0.05	0.17