Table 3:

Contingency table (2 × 2) showing the lack of correlation between epidural leak and presence of epidural mass^{^a}

	Epidural Leak+	Epidural Leak−	Total
Epidural mass+	4	27	31
Epidural mass−	6	33	39
Total	10	60	70

↵a Fisher exact test. Two-tailed P = 1.