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. 2019 Mar 18;5(1):e12480. doi: 10.2196/12480

Table 3.

t test of similarity of messages between human papillomavirus (HPV) cancer risk and sexual activity on Reddit by Latent Semantic Analysis (LSA).

Year	Message count	Sexual similarity, mean	Cancer similarity, mean	Yearly t test score
2007	162	0.10	0.14	−1.70
2008	279	0.08	0.15	−4.83^a
2009	558	0.07	0.13	−6.84^a
2010	751	0.06	0.13	−9.26^a
2011	2850	0.06	0.11	−11.97^a
2012	3148	0.07	0.10	−9.35^a
2013	5108	0.06	0.11	−19.20^a
2014	4562	0.07	0.10	−10.25^a
2015	5311	0.06	0.10	−14.64^a

^aP<.001.