Prevalence of syndromic disorders related to pathophysiologic processes recorded in overall dogs, purebreds only and crossbreds only that attended primary veterinary practices in England.

P–values (Holm–adjusted) represent comparison between purebreds and crossbreds.aPrev prevalence.b95% CI 95% confidence interval.经Holm校正的P值代表纯种与杂交品种间的比较。a 患病率（prevalence）；b 95%置信区间（95% confidence interval，缩写95% CI）。