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. 2011 May 17;9:51. doi: 10.1186/1477-7819-9-51

Table 1.

Univariate Analysis of Categorical Variables for Relapse of the Disease

Number of Patients n (%)
Variables Relapse No relapse p value
Grade of the Tumour
High grade 39(41.9%) 25(26.9%) 0.02
Low grade 0(0%) 4(4.3%)
Not Documented1 0(0%) 3(3.2%)

Positive Surgical Margins
Yes 5(5.4%) 4(4.3%) 0.001
No 15(16.1%) 26(28%)
Not Documented2 19(20.4%) 2(2.2%)

1 Grade of Tumour was not documented in 5 patients and outcome information was missing in 22.

2 Margin status was not documented in 31 patients and outcome information missing for 10 patients

Grade of the tumour was classified pathologically as high or low grade. The margin was considered positive if tumour was present within 1 mm of resected specimens. The p-values were statistically significant for the grade of the tumour and the margins status post-operatively in determining the relapse of the disease.