Category	Variables	Frequency (%)
Samples (N = 200)	Rectal swab samples	176 (88.0%)
Samples (N = 200)	Floor swabs	24 (12.0%)
Sex of pigs sampled (N = 176)	Males and castrates	88 (50.0%)
Sex of pigs sampled (N = 176)	Female	88 (50.0%)
Bacterial culture results (N = 200)	E. coli positive	170 (85.0%)
Bacterial culture results (N = 200)	E. coli Negative	30 (15.0%)