Lumbosacral Defects in a 16th–18th-Century Joseon Dynasty Skeletal Series from Korea

Table 2

Descriptive statistics of spina bifida occulta (SBO) in Joseon males and females.

	Number of SBO occurrences/total (%)			P value
	Males	Females	Indeterminate
Spina bifida at L5	1/81 (1.2%)	1/68 (1.5%)	0/49 (0.0%)	1.000
Spina bifida at S1	6/81 (7.4%)	1/68 (1.5%)	1/49 (2.0%)	0.126
Spina bifida at S2	2/81 (2.5%)	1/68 (1.5%)	1/49 (2.0%)	1.000
Spina bifida at S1–S5	1/81 (1.2%)	0/68 (0.0%)	0/49 (0.0%)	1.000
Total	10/81 (12.3%)	3/68 (4.4%)	2/49 (4.1%)	0.143

probability value of Fisher’s exact test between the sexes.