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. 2021 May 28;7:12. doi: 10.1186/s40738-021-00104-8

Table 5.

The association between trigger type and pregnancy outcomes in the first subsequent frozen cycle.

Trigger Type
hCG trigger
N = 213 (ref)
n (%)
Dual trigger
N = 217
n (%)
Adjusted RRa
Pregnancy 150 (70.4%) 148 (68.2%) 0.97 (0.86, 1.11)
Clinical pregnancy 134 (62.9%) 129 (59.5%) 0.95 (0.81, 1.10)
Ongoing pregnancy 111 (52.1%) 102 (47.0%) 0.90 (0.75, 1.10)
Live birth 103 (48.4%) 97 (44.7%) 0.92 (0.75, 1.11)

aModel adjusted for maternal age at retrieval, ovarian diagnosis, and number of embryos transferred.