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The cumulative incidence of diarrhea after insertion into the nursery unit. Pigs were clinically examined every day at two Danish indoor producers (A, B), and cumulative incidences were estimated using a Kaplan–Meier failure function. All pigs (n = 141, Producer A. n = 131, Producer B) were assumed to be non-diarrheic at the time of insertion (time = 0), and the first clinical exam was performed at time = 0.1
