Table 3.

Cross tabulation of association between thickness of tumor at the time of treatment and discordant Gene Expression Profile (GEP) class assignment in paired tumor aspirates from 80 patients with posterior uveal melanoma.

	Concordance versus Discordance of GEP Class in Paired Tumor Aspirates by Support Vector Machine Algorithm
	Concordant		Discordant
	Number	(%)	Number	(%)
Thickness category of tumor
thinner (<= 3.5 mm thick)	16	(76.2)	5	(23.8)
intermediate (>3.5 mm but <= 7.0 mm thick)	30	(83.3)	6	(16.7)
thicker (>7.0 mm thick)	22	(95.7)	1	(4.3)

chi-squared = 3.4 df = 2 P = 0.18