Table 3.

Summary of regression analyses to examine the independent contributions of age, sex, and age*sex to pet ownership within the past 10 years and to current pet ownership.

Pet	Model	Model effects	Age p	Per decade OR	(95% CI)		Sex p	Age*sex p
Pet ownership within the past 10 years
Any	1	Age	<0.0001	0.61	(0.49	to 0.75)	n/a	n/a
	2	Age, sex	<0.0001	0.61	(0.49	to 0.76)	0.532	n/a
	3	Age, sex, age*sex	0.0008	0.62	(0.47	to 0.82)	0.925	0.855
Dog	4	Age	<0.0001	0.56	(0.44	to 0.70)	n/a	n/a
	5	Age, sex	<0.0001	0.56	(0.44	to 0.70)	0.980	n/a
	6	Age, sex, age*sex	0.0012	0.60	(0.44	to 0.82)	0.463	0.461
Cat	7	Age	0.003	0.70	(0.55	to 0.88)	n/a	n/a
	8	Age, sex	0.003	0.70	(0.55	to 0.90)	0.441	n/a
	9	Age, sex, age*sex	0.012	0.68	(0.50	to 0.92)	0.616	0.694
Current pet ownership
Any	1	Age	<0.0001	0.52	(0.41	to 0.67)	n/a	n/a
	2	Age, sex	<0.0001	0.53	(0.41	to 0.67)	0.268	n/a
	3	Age, sex, age*sex	<0.0001	0.51	(0.37	to 0.70)	0.618	0.734
Dog	4	Age	<0.0001	0.48	(0.36	to 0.64)	n/a	n/a
	5	Age, sex	<0.0001	0.48	(0.36	to 0.64)	0.668	n/a
	6	Age, sex, age*sex	0.0003	0.49	(0.34	to 0.72)	0.900	0.846
Cat	7	Age	0.0008	0.61	(0.45	to 0.81)	n/a	n/a
	8	Age, sex	0.0001	0.61	(0.45	to 0.82)	0.606	n/a
	9	Age, sex, age*sex	0.003	0.55	(0.37	to 0.81)	0.394	0.432

p's are 2-tailed, bold indicates p <0.05.