Skip to main content

Table 4 Distribution of 78 dogs in a blinded clinical trial of canine hip dysplasia (CHD) with gold bead implantation or placebo treatment according to the main outcome variable, change in pain signs of CHD, versus the owner's guess of treatment given. The opinion of the owner was requested at the end of the blinded trial period (six months), but before the randomization code was broken.

From: Stratification, Blinding and Placebo Effect in a Randomized, Double Blind Placebo-controlled Clinical Trial of Gold Bead Implantation in Dogs with Hip Dysplasia

 

Pain signs of canine hip dysplasia

 

Owner's guess of treatment given

Complete recovery

Large improvement

Mild improvement

No change in signs

Mild aggravation

Large aggravation

Total number of dogs

Placebo

0

0

1

6

2

2

11

Gold

11

28

10

3

0

0

52

Don't know

0

0

2

10

1

2

15