Table 2.

Seroprevalence of Ross River virus (RRV) in koalas residing in urban coastal lacustrine and estuarine environments.

Location	Sample	RRV positivea	RRV negative	% positive	Odds-ratios	2.5% CI	97.5% CI	z-value	p-value
Estuarine	Overall	73	16	82.02	0.82	0.39	1.82	0.49	0.62
	Female	41	9	82.00	0.99	0.36	2.98	0.01	0.99
	Male	32	7	82.05	1.01	0.34	2.76	0.01	0.99
Lacustrine	Overall	83	15	84.69	1.21	0.55	2.57	0.49	0.62
	Female	54	9	85.71	1.24	0.38	3.88	0.38	0.71
	Male	29	6	82.86	0.81	0.26	2.61	0.38	0.71

Comparison of seroprevalence rates between environments was performed using data only for animals for which their location could be confirmed (n = 187) after accounting for relocated individuals and animals with too few position locations (n < 5) to confirm their assignment to a particular environment.

^aAn animal sampled multiple times was considered seropositive if the animal returned a positive test result during any individual sampling event.