Table 2
Comparison of detection times betweenprogressor and statpac 2 (Wilcoxon signed rank Z test)
| Cases | Mean rank | |
|---|---|---|
| Negative ranks | 1 | 3.00 |
| Positive ranks | 18 | 10.39 |
| Ties | 0 | |
| Total | 19 |
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Z = −5.1816, p = 0.0002.
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Negative ranks occur when statpac 2 detects progression in a given field series earlier thanprogressor.
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Positive ranks occur when progressor detects progression in a given field series earlier than statpac 2.
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Ties occur when both algorithms detect progression in a given field series at the same time.
