Table 4.

Yolk sac diameter ranges according to gestational sac diameter (mm) and crown rump length(mm) in first trimester scan.

	Yolk sac <2mm (n=6)	Yolk sac 2-5mm (n=87)	Yolk sac >5mm (n=27)	ANOVA	p-value
Gestational Sac diameter (mm) Mean±SD Range	35.42±8.60 26.5-49.7	38.84±15.28 17.8-77	37.44±18.24 15.5-93.6	0.191	0.827
Crown rump length(mm) Mean±SD Range	18.83±8.94 7.5-33.1	23.97±17.95 2.7-70.3	19.56±17.24 2.1-58.2	0.810	0.447

F-One Way Analysis variance; p-value>0.05 NS.