Suicide clustering in response to homophily (<i>h</i>) in the absence of social learning and under varying levels of individual variation in (non-copycat) suicide risk factors (<i>q</i>).

Parameters are the probability of homophily (h), the individual variation in suicide risk (q), and the frequency of spatial (Xs), temporal (Xt) and spatiotemporal (Xst) clusters in replicate simulation runs ranging from 0 (no clustering) to 1 (maximum clustering). Other parameters: p0 = 0.005, s = 0, cp = 0, cs = 0, m = 0, r = 0.