Contingency Table for Severe Recurrences.
| Margins | Yes Number | No Number | Total Number |
|---|---|---|---|
| Negative | 0 (3.94)* | 46 (41.4) | 46 |
| Positive | 6 (2.06) | 18 (21.94) | 24 |
| Total | 6 | 64 | 70 |
* Numbers in parentheses are calculated.
Note: The observed χ2 = 12.38. If there were an effect at the P = .005 level, then the expected χ2 = 7.88. Because the observed exceeds the expected, we conclude the margin type affects the frequency of severe recurrence (P = .005). Reject the null hypothesis that the frequencies are the same