Table 1.

Mean pairwise relatedness (r ± SD) of adult males at different social levels within the community for both study periods

Level	2010	No. of dyads	2011	No. of dyads
Within party	0.02 ± 0.22	29	0.01 ± 0.21	34
Between parties	0.00 ± 0.15	43	0.01 ± 0.16	30
Within gang*	0.01 ± 0 0.18	72	0.01 ± 0.19	64
Between gangs	−0.05 ± 0.16	456	−0.05 ± 0.15	464

^*Within-gang dyads were significantly more related than between-gang dyads at P < 0.01 in both years. The number of dyads varies between years because of demographic changes.