13 April 2022>: Clinical Research
External Quality Assessment of Maternal Serum Levels of Alpha-Fetoprotein, Free Beta-Human Chorionic Gonadotropin, and Unconjugated Estriol in Detecting Down Syndrome and Neural Tube Defects in the Second Trimester of 87 Maternal Serum Samples, Based on 105-139 Days
Yiming Chen 12AEG** , Yijie Chen 2BE* , Yezhen Shi 3CD , Wenwen Ning 2BE , Xiaoying Wang 1B , Liyao Li 1BC , Huimin Zhang 2FDOI: 10.12659/MSM.935573
Med Sci Monit 2022; 28:e935573
Table 6 Comparison of neural tube defect screening effect in 6 different laboratories.
Lab | Low/High risk | NTD diagnostic result | Total | P value | Kappa value | |
---|---|---|---|---|---|---|
Normal | NTD | |||||
Lab A | Low risk | 78 | 2 | 80 | 0.500 | 0.738 |
High risk | 0 | 3 | 3 | |||
Lab B | Low risk | 78 | 2 | 80 | 0.500 | 0.738 |
High risk | 0 | 3 | 3 | |||
Lab C | Low risk | 78 | 4 | 82 | 0.125 | 0.320 |
High risk | 0 | 1 | 1 | |||
Lab D | Low risk | 78 | 2 | 80 | 0.500 | 0.738 |
High risk | 0 | 3 | 3 | |||
Lab E | Low risk | 78 | 2 | 80 | 0.500 | 0.738 |
High risk | 0 | 3 | 3 | |||
Lab F | Low risk | 78 | 4 | 82 | 0.125 | 0.320 |
High risk | 0 | 1 | 1 | |||
Lab – laboratory; NTD – neural tube defects; PR – positive rate; DR – detection rate. |