Prevalence of Swimming Puppy Syndrome in 2,443 Puppies during the Years 2006–2012 in Thailand

Table 3

Factor of sex on expression of disease.

Sex	Total	Disease present (cases)	Disease absent (controls)
Male	1,184	29 (2.45%)	1,155 (97.55%)
Female	1,259	23 (1.83%)	1,236 (98.17%)

Pearson’s chi-squared statistic (includes Yates’ continuity correction) = 0.423; 𝑃 value using Fisher’s exact test (1 degree of freedom) = 0.484; estimate of odds ratio = 1.248; 95% confidence limits for true odds ratio = [0.72, 2.166]; estimate of risk difference (𝑝₁−𝑝₂) in case-control studies = 0.055; 95% confidence limits for risk difference = [0.006, 0.105].