Table 3.

T-tests of the mean difference (days) between the median registration date in each module and the average registration date of the top 10 users ranked by (1) total post frequency and (2) eigenvector centrality.

	Total post frequency			Eigenvector centrality
Module	Mean difference (days)	t	p a	Mean difference (days)	T	p a
1	272	-3.56	.006	140	-1.15	.28
2	317	-3.34	.009	293	-2.74	.023
3	145	-3.32	.009	123	-2.64	.027
4	347	-5.96	<.001	377	-8.56	<.001
5	55	-2.84	.019	137	-2.85	.019

^aAll effects degrees of freedom = 9