Table 5.

Estimated probability of improvement in pain signs of canine hip dysplasia related to four, three and two age strata. The results are expressed in percent with 95% confidence intervals. (n) = number of dogs.

Age strata	Years	Dogs (n)	Probability of improvement	95% confidence intervals	p-values
Four age	≤2.6	20	87.5 %	71.0% – 96.5%	0.057
strata	2.7 – 4.6	20	65.5 %	45.7% – 82.1%
	4.7 – 5.9	20	57.7%	36.9% – 76.7%
	≥6.0	18	74.1%	53.7% – 88.9%
Three	≤2.5	19	86.7%	69.3% – 96.2%	0.053
age strata	2.6 – 6.0	41	63.2%	49.3% – 75.6%
	≥6.1	18	74.1%	53.7% – 88.9%
Two age	≤4.0	36	80.4%	67.6% – 89.8 %	0.047
strata	> 4.1	42	63.8%	50.1% – 76.0%