Table 1.

Summary of the piglets included in a cohort study of post-weaning diarrhea

	Producer A	Producer B
Sex at birth
Female	64/150 (43.7%)	72/150 (48.0%)
Male	86/150 (57.3%)	78/150 (52.0%)
Sex at insertion^a
Female	61/141 (43.2%)	63/131 (48.1%)
Male	80/141 (56.7%)	68/131 (51.9%)
Pre-weaning mortality rate^b	9/150 (6.0%)	19^c/150 (12.7%)
Moved to foster sow	113/149^e (75.8%)	74/148^f (50%)
Weaned in the farrowing unit^d	61/140^e (43.6%)	51/131 (38.9%)
Mean birth weight (g)	1345 (SD: 316)	1344 (SD: 302)
	Range: 540–2080	Range: 690–2070
	n = 150	n = 150
The mean body weights at insertion to the nursery units (g)	6054 (SD: 1670)	6549 (SD: 1484)
The mean body weights at insertion to the nursery units (g)	Range: 2100–11,500	Range: 2900–11,000
	n = 140^e	n = 131
Average daily weight gain the first 14 days after insertion to the nursery units (g)	155 (SD: 59 g)	168 (SD: 55)
	Range: 14–300	Range: 36–321
	n = 133	n = 125^e

^aSex at insertion was recoded to be in accordance with the sex registered at birth whenever these registrations did not agree (n = 2)

^bDead/euthanized by herd personnel

^cIncluding one pig lost from follow up that was assumed to be dead

^dBefore the common weaning day

^eData from one piglet was missing

^fData from two piglets were missing