Skip to main content
. 2022 Sep 27;11(19):5722. doi: 10.3390/jcm11195722

Table 1.

Results deriving from the comparison between different incubation intervals of spermatozoa and oocytes in in vitro fertilization procedure.

Authors, Year Interval of
Co-Incubation
Fertilization Rate (FR) in Short IVF Clinical Pregnancy Rate (CPR) in Short IVF Implantation Rate (IP) in Short IVF
Gianaroli et al., 1996 [22] 1 h vs. overnight Improved Improved Improved
Quinn et al., 1998 [29] 1 h vs. overnight Unchanged Improved Improved
Coskun et al., 1998 [30] 1 h vs. overnight Unchanged Not assessed Not assessed
Dirnfeld et al., 1999 [31] 1 h vs. overnight Unchanged Improved Improved
Lin et al., 2000 [32] 1–3 h vs. overnight Unchanged Not assessed Not assessed
Swenson et al., 2000 [33] 2 h vs. overnight Not assessed Worsened Unchanged
Boone et al., 2001 [34] 3 h vs. overnight Worsened Not assessed Not assessed
Lundqvist et al., 2001 [35] 2 h vs. overnight Worsened Unchanged Unchanged
Dirnfeld et al., 2003 [21] 1 h vs. overnight Unchanged Not assessed Not assessed
Kattera et al., 2003 [36] 2 h vs. overnight Unchanged Improved Improved
Barraud-Lange et al., 2008 [37] 1 h vs. overnight Worsened Not assessed Not assessed
Xiong et al., 2009 [26] 1–6 h vs. overnight Unchanged Unchanged Not assessed
Dai et al., 2012 [38] 1–4 h vs. overnight Unchanged Unchanged Unchanged
Huang et al., 2013 [39] 1–4 h vs. overnight Not assessed Improved Not assessed
Zhang et al., 2013 [40] 1–6 h vs. overnight Unchanged Improved Improved
Li et al., 2016 [19] 2 h vs. overnight Unchanged Improved Improved
Le Bras et al., 2017 [27] 2 h vs. overnight Worsened Improved Improved
He et al., 2018 [41] 4/6 h vs. overnight Worsened Unchanged Unchanged
Chen et al., 2019 [23] 3/4 h vs. overnight Unchanged Unchanged Unchanged
Kong et al., 2021 [24] 4 h vs. overnight Unchanged Unchanged Not assessed