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

Table 6

Number of litters on different floor types.

	Floor type			Total
	Tile	Concrete	Wood
Disease present (cases)	29 (2.25%)	15 (2.64%)	8 (1.28%)	52
Disease absent (controls)	1,261 (97.75%)	554 (97.36%)	617 (98.72%)	2,432
Total	1,290	569	625	2,484

Chi squared = 2.9861; degrees of freedom = 2; 𝑃 value = 0.2247.