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.