Table 2.
Characteristics and grading determination of PAS cases. aData displayed as median (± IQR) or n (%).
| Casesa n = 35 |
Controlsa n = 70 |
p-value | |
|---|---|---|---|
| Maternal age (years) | 36.9 (± 2.9) | 32.9 (± 2.7) | < 0.01 |
| # prior cesarean sections | |||
| 0 | 23 (65.7) | 55 (78.6) | 0.33 |
| 1 | 7 (20.0) | 10 (14.3) | |
| ≥ 2 | 5(14.3) | 5 (7.1) | |
| Placenta previa at delivery | 8 (22.9) | 6 (8.6) | < 0.01 |
| PAS diagnosed by ultrasound | |||
| Grade 1 (n = 27) | 3 (11.1) | N/A | |
| Grade 2 (n = 7) | 4 (57.1) | ||
| Grade 3 (n = 1) | 1 (100.0) | ||
| PAS grade and determination | |||
| Grade 1 | 27 (77.1) | N/A | |
| Clinical | 21 | ||
| Histologic | 0 | ||
| Both concordant | 6 | ||
| Grade 2 | 7 (20.0) | ||
| Clinical | 2 | ||
| Histologic | 1 | ||
| Both concordant | 4 | ||
| Grade 3 | 1 (2.9) | ||
| Clinical | 0 | ||
| Histologic | 0 | ||
| Both concordant | 1 | ||