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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Neurosurgery. 2015 Mar;76(3):313–320. doi: 10.1227/NEU.0000000000000619

Table 3. Log rank test p-values and crude hazard ratios for mortality among cases of low grade pediatric gangliogliomas/gangliocytomas, 2004-2010 (n=348).

p-value* HR 95% CI
Age (years) 0.001
0 31.4 2.8-351.4
1-4 2.2 0.1-35.5
5-9 5.4 0.6-52.4
10-14 2.0 0.2-21.7
15-19 ref
Sex 0.35
Female 1.9 0.5-6.9
Male ref
Race (n=341) 0.23
White ref
Not white 2.3 0.6-9.1
Extent of resection (n=343) 0.84
GTR ref
STR 0.6 0.1-4.9
No surgery 1.3 0.2-10.8
Radiation treatment (n=345) 0.16
No radiation ref
Beam radiation 4.0 0.5-31.8
Location 0.01
Brainstem 8.2 1.7-39.5
Spinal cord** N/A
Other site ref
*

Overall survival curves were calculated using the Kaplan-Meier method and compared with the log-rank test.

**

0 deaths in patients with spinal cord tumors