Table 1.
NIPS results | |||
---|---|---|---|
Total | Fail | Pass | |
(n = 2,366) | (n = 103) | (n = 2,263) | |
Fetal fraction | |||
Mean | 9.4 | 2.8 | 9.7 |
SD | 4.3 | 0.8 | 4.2 |
Median | 8.8 | 2.9 | 9.0 |
Q1 – Q3 | 6.6 – 11.6 | 2.3 – 3.3 | 6.9 – 11.8 |
BMI | |||
Mean | 27.4 | 34.3 | 27.1 |
SD | 6.6 | 7.6 | 6.3 |
Median | 25.9 | 34.3 | 25.7 |
Q1 – Q3 | 22.5 – 31 | 30.1 – 39.4 | 22.3 – 30.5 |
Gestational age (weeks) | |||
Mean | 13.7 | 13.1 | 13.7 |
SD | 4.34 | 3.11 | 4.4 |
Median | 12.1 | 12.9 | 12.1 |
Q1 – Q3 | 11.0 – 14.4 | 11.8 – 14.1 | 11 – 14.4 |
Presence of trisomy | |||
Yes (%) | 33 | 2 (2.8) | 31 (1.4) |
No (%) | 2,296 | 69 (97.2) | 2,227 (98.6) |
Unknown (%) | 37 | 32 | 5 |
Fetal sex | |||
Male (%) | 1,207 | 53 (51.5) | 1,154 (51.7) |
Female (%) | 1,129 | 50 (48.5) | 1,079 (48.3) |
Unknown (%) | 30 | 0 | 30 |
Maternal age (years) | |||
Mean | 32.3 | 32.9 | 32.3 |
SD | 5.2 | 5.2 | 5.2 |
Median | 33 | 34 | 33 |
Q1 – Q3 | 29 – 36 | 30 – 37 | 29 – 36 |