TABLE 3.

Data from ovine fecal samples (n = 50) for non-type-specific E. coli: numbers of strain types observed and fractions of the numbers of strain types used to construct an informative prior distribution for the sample size calculations based on the second ovine fecal data set (n = 80) in Table 2^a

No. of strain types observed	Frequency counts of strain types observed
1	6
2	15
3	12
4	11
5	12
6	0.5b

^aThe number of isolates typed per sample was five.

^bSince six different types were not observed in the data set, a value less than 1 was added for the frequency count of observing six different types per sample in order to construct the prior.