Table 4.

Statistical significance of pairwise differences in cancer term usage between African Americans and Caucasians during each month of the study period^a.

Month	Cancer term, t test
	"Cancer"	"Breast cancer"	"Prostate cancer"	"Colorectal cancer"	"Lung cancer"
April	0.00003	0.053025	0.014894	0.025347	0.080356
May	0.008194	0.584394	0.122251	0.095581	0.510364
July	0.013599	<0.0001	0.006656	0.157299	0.890133
August	<0.0001	0.001168	0.157209	0.312076	0.165111
September	<0.0001	0.00007	0.017132	0.157299	0.013196
October	<0.0001	<0.0001	0.242175	0.974206	0.000162
November	<0.0001	<0.0001	0.027708	0.014306	0.000631
December	0.000266	0.000001	0.027575	0.317311	0.000067
January	0.241671	0.00945	0.1573	0.083265	0.91944

^aEach user’s total term usage was calculated by summing the frequency with which cancer terms appeared in their timeline.