Table 3 Cross tabulation. Representation of the first ultrasound result at 7 weeks gestation with respect to the number of cultivated 2PNs in CG2 and DMW.

Number of cultivated 2PNs (2nd cycle) × 1st ultrasound (2nd cycle)
CG2 and DMW				1st ultrasound (2nd cycle)				Total
				No ultrasound	Intact, singleton	Intact, twins	Abortion
CG2	Number of cultivated 2PNs	1	Count	34	5	0	0	39
			% of Total	17.0 %	2.5 %	0.0 %	0.0 %	19.5 %
		2	Count	78	28	12	3	121
			% of Total	39.0 %	14.0 %	6.0 %	1.5 %	60.5 %
		3	Count	26	13	1	0	40
			% of Total	13.0 %	6.5 %	0.5 %	0.0 %	20.0 %
	Total		Count	138	46	13	3	200
			% of Total	69.0 %	23.0 %	6.5 %	1.5 %	100.0 %
DMW	Number of cultivated 2PNs	1	Count	7	2	0	0	9
			% of Total	3.5 %	1.0 %	0.0 %	0.0 %	4.5 %
		2	Count	24	4	1	0	29
			% of Total	12.0 %	2.0 %	0.5 %	0.0 %	14.5 %
		3	Count	20	5	0	0	25
			% of Total	10.0 %	2.5 %	0.0 %	0.0 %	12.5 %
		4	Count	39	15	13	2	69
			% of Total	19.5 %	7.5 %	6.5 %	1.0 %	34.5 %
		5	Count	19	14	1	0	34
			% of Total	9.5 %	7.0 %	0.5 %	0.0 %	17.0 %
		6	Count	24	9	1	0	34
			% of Total	12.0 %	4.5 %	0.5 %	0.0 %	17.0 %
	Total		Count	133	49	16	2	200
			% of Total	66.5 %	24.5 %	8.0 %	1.0 %	100.0 %