Table 2.

Pregnancy outcomes of different follicle size groups

Follicle size (mm)	N (%)	Pregnancy rate (%)	Clinical pregnancy rate (%)	Live birth rate (%)
Overall	763	18.84	17.69	14.42
≤ 18.0	188 (24.6)	12.23	12.23	9.57
18.1 ~ 19.0	114 (14.9)	14.92	14.03	11.40
19.1 ~ 20.0	161 (21.1)	25.47	23.60	19.88
20.1 ~ 21.0	108 (14.16)	23.15	23.15	21.30
21.1 ~ 22.0	78 (10.2)	24.36	23.08	16.67
> 22.0	114 (14.9)	14.04	13.16	9.65
P		0.008	0.012	0.007