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Pearson's correlations of numbers positive for E. coli O157 by any test at a given sampling point to numbers detected positive in previous days
| Number of days prior to sampling point | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| Sampling period 1 | 0·589 | −0·390 | −0·981 | −0·796 | −0·720 |
| Sampling period 2 | −0·094 | 0·849 | −0·317 | 0·736 | −0·327 |
Correlation coefficients >0·5 appear in bold font.
