Application of intelligent algorithms in Down syndrome screening during second trimester pregnancy

Table 4 Comparison of algorithms when different T21 threshold values were selected

Risk-cutoff value	Age	SVM		Statistical methods
		FPR	DR	FPR	DR
270	Overall	0.009369	0.9295	0.032	0.913
50	Overall	0.003081	0.913	0.007	0.82
150	Overall	0.007039	0.9268	0.019	0.885
250	Overall	0.008197	0.9178	0.03	0.91
500	Overall	0.01775	0.9266	0.053	0.937
750	Overall	0.02299	0.9319	0.072	0.95
1000	Overall	0.03321	0.9305	0.088	0.958

SVM: Support vector machine; FPR: False positive rate; DR: Detection rate.