Table 1.

Demographic characteristics at baseline, with the results of a permutation test for homophily

Characteristic	Number of	Number of	P value
	NMs (%) or mean (SD) (n=710)	CAs (%) or mean (SD) (n=662)
Age	33.0 (11.1)	38.9 (9.7)	<0.001
Female	380 (53.7%)	349 (53.9%)	0.89
Employed	490 (69.3%)	356 (55.0%)	<0.001
At least 7 years education	369 (52.0%)	584 (82.3%)	<0.001
Complete HIV knowledge	638 (89.9%)	598 (90.4%)	0.65
Persons sleeping in home	5.00 (5.77)	3.87 (3.72)	<0.001
Married	373 (52.7%)	338 (51.1%)	0.56
HIV positive	87 (12.3%)	662 (100%)	N/A
Private source of water	309 (43.7%)	263 (39.7%)	0.19

Specifically, for each CA-NM dyad, either a difference (for continuous variables) or concordance (for dichotomous variables) is calculated. For example, if a changeagent (CA) was 39 years old, and their networkmember (NM) was 25 years old, the difference would be 14 years old. If a CA was male and their NM was female, the pair would be discordant for sex. CA-NM pairs were then randomly reshuffled, the edge-wise characteristics recalculated, and the observed difference compared to the distribution of randomised differences.