An open, randomized single‐centre study to compare the efficacy and convenience of follitropin β administered by a pen device with follitropin α administered by a conventional syringe in women undergoing ovarian stimulation for IVF/ICSI

Table II.

Efficacy parameters (Values are means ± SD)

	Follitropin β with pen device (n = 93)	Follitropin α with conventional syringe (n = 98)
Total dose of rFSH (IU)	1880 ± 578∗	2226 ± 723
Duration of treatment (days)	10.8 ± 1.9∗∗	12.0 ± 2.4
Estradiol level day of hCG (ng/l)	2345 ± 1184	2163 ± 1144
No. of follicles ≥15 mm (n)	9.4 ± 4.9	8.9 ± 4.4
No. of oocytes retrieved (n)	15.2 ± 7.7	13.1 ± 7.3
No of embryos frozen (n)	4.5 ± 6.0∗∗∗	2.6 ± 3.6

∗P < 0.001.

∗∗P = 0.001.

∗∗∗P = 0.034.

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