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Contingency table (2 × 2) showing the lack of correlation between of epidural leak and type of epidural mass, “large convex” or “small concave”a
| Epidural Leak+ | Epidural Leak− | Total | |
|---|---|---|---|
| Epidural mass S CV | 3 | 10 | 13 |
| Epidural mass L CX | 1 | 17 | 18 |
| Total | 4 | 27 | 31 |
Note:—S CV indicates small concave; L CX, large convex.
Fisher exact test. Two-tailed P = .283.
