Table 3.

Contingency Table for Mild Recurrences.

MarginsYes NumberNo NumberTotal Number
Negative7 (4.6)*39 (41.4)46
Positive0 (2.4)24 (21.6)24
  • * Numbers in parentheses are calculated.

  • Note: The observed χ2 = 4.06. If there were an effect at the P = .05 level, then the expected χ2 = 3.84. Because the observed exceeds the expected, we conclude that the margin type affects the frequency of mild recurrence (P = .05). Reject the null hypothesis that the frequencies are the same.