Table 1.

Prevalence and predictors of being desexed in an Australian cat cohort born between 2010 to 2017 inclusive.

Variable	Category	Number of cats	Prevalence (%) of desexed cats and CI95	Odds Ratio	p-value
Total population	–	52,941	83.6 (83.3–83.9)	–	–
Sex	Female	26 348	81.0 (80.5–81.4)	Reference
	Male	26 279	87.0 (86.6–87.5)	1.37 (1.29–1.45)	< 0.001
Breed	Mixed breed	41 702	84.8 (84.5–85.2)	Reference
	Purebred	10 411	83.4 (82.7–84.1)	0.79 (0.70–0.88)	< 0.001
State	NSW	13 555	80.3 (79.6–80.9)	Reference
	ACT	1 059	88.2 (86.3–90.2)	1.03 (0.82–1.30)	0.77
	QLD	19 502	84.2 (83.7–84.7)	0.73 (0.68–0.78)	< 0.001
	SA	2 009	87.9 (86.5–89.3)	1.47 (1.24–1.75)	< 0.001
	VIC	11 364	86.8 (86.2–87.4)	1.28 (1.17–1.39)	< 0.001
	WA	1 109	85.3 (83.2–87.3)	0.96 (0.77–1.19)	0.70
Remoteness area	MCA	39 252	84.4 (83.7–85.2)	Reference
	Other	9 285	82.1 (81.7–82.4)	0.87 (0.80–0.94)	< 0.001
Index of economic resources (quantile)	1	9 094	81.2 (80.4–82.0)	Reference
	2	8 876	82.3 (81.5–83.0)	1.05 (0.95–1.15)	0.27
	3	10 990	83.5 (82.8–84.1)	1.06 (0.96–1.17)	0.23
	4	10 679	86.3 (85.6–86.9)	1.17 (1.05–1.31)	0.003
	5	8 883	86.5 (85.8–87.2)	1.19 (1.05–1.35)	0.004
Index of relative socio-economic disadvantage (quantile)	1	4 335	79.5 (78.3–80.7)	Reference
	2	6 466	80.5 (79.5–81.4)	1.14 (1.02–1.27)	0.01
	3	14 844	83.7 (83.1–84.3)	1.34 (1.20–1.51)	< 0.001
	4	10 635	85.3 (84.6–86.0)	1.31 (1.16–1.49)	< 0.001
	5	12 242	86.6 (86.0–87.2)	1.52 (1.32–1.74)	< 0.001

Significant values (p < 0.05) are indicated in bold.

CI confidence interval, MCA major cities of Australia.