Table 2.

MoM value range of each maternal serum marker in the quad screen test.

Descriptives
		N	Mean	Std. Deviation	Std. Error	95% Confidence Interval for Mean		Minimum	Maximum
						Lower Bound	Upper Bound
AFP	GA≧37 weeks	687	1.1116	0.3639	0.0139	1.0843	1.1388	0.40	2.54
	GA<37 weeks	83	1.2040	0.4964	0.0545	1.0956	1.3124	0.50	3.59
	Total	770	1.1215	0.3811	0.0137	1.0946	1.1485	0.40	3.59
uE3	GA≧37 weeks	687	1.0741	0.3060	0.0117	1.0512	1.0971	0.38	2.19
	GA<37 weeks	83	1.0878	0.2990	0.0328	1.0225	1.1531	0.34	1.90
	Total	770	1.0756	0.3051	0.0110	1.0540	1.0972	0.34	2.19
hCG	GA≧37 weeks	687	1.3211	0.6695	0.0255	1.2709	1.3712	0.20	4.67
	GA<37 weeks	83	1.4901	1.1376	0.1249	1.2417	1.7385	0.16	8.02
	Total	770	1.3393	0.7353	0.0265	1.2873	1.3913	0.16	8.02
Inhibin A	GA≧37 weeks	687	1.1969	0.5719	0.0218	1.1541	1.2398	0.37	6.13
	GA<37 weeks	83	1.3924	1.0490	0.1151	1.1634	1.6215	0.48	6.82
	Total	770	1.2180	0.6424	0.0232	1.1726	1.2635	0.37	6.82

Abbreviations: AFP: alpha-fetoprotein; CI: confidence interval; hCG: human chorionic gonadotropin; MoM: multiples of the median; uE3: unconjugated estriol; Std: standard.