| Parity | Frequency | Percentage | BW mean (SD) | PW mean (SD) | PBWR (SD) |
| 0 | 547 | 25.97 | 3282 (233) | 682 (63) | 18.46 (1.4) |
| 1 | 594 | 28.21 | 3381 (164) | 693 (92) | 20.55 (4.1) |
| 2 | 371 | 17.62 | 3317 (210) | 696 (73) | 19.52 (1.5) |
| 3 | 253 | 12.01 | 3486 (252) | 702 (86) | 20.64 (1.6) |
| 4 | 175 | 8.31 | 3373 (251) | 692 (62) | 19.98 (1.6) |
| 5 | 65 | 3.09 | 3478 (391) | 699 (53) | 20.05 (0.8) |
| 6 | 58 | 2.75 | 3231 (409) | 681 (45) | 20.37 (7.4) |
| 7 | 18 | 0.86 | 3550 (669) | 622 (24) | 17.75 (2.1) |
| 8 | 18 | 0.86 | 3280 (453) | 650 (29) | 19.63 (2.5) |
| 9 | 7 | 0.32 | 3200 (400) | 640 (50) | 24.00 (4.5) |