Table 1 Baseline distribution of embryos and female patient ages in each IVF laboratory.
Laboratory | Negative pregnancy | Positive pregnancy | P-value | ||
|---|---|---|---|---|---|
N | Mean ± SD | N | Mean ± SD | ||
Total | 1743 | 36.2 ± 3.9 | 812 | 34.0 ± 3.1 | < 0.001 |
A | 931 | 36.3 ± 4.0 | 339 | 33.4 ± 2.9 | < 0.001 |
B | 309 | 35.8 ± 4.3 | 216 | 34.0 ± 3.2 | < 0.001 |
C | 325 | 36.5 ± 3.1 | 77 | 34.7 ± 3.0 | < 0.001 |
D | 95 | 36.6 ± 3.6 | 136 | 35.6 ± 2.9 | 0.027 |
E | 83 | 35.3 ± 4.3 | 44 | 33.5 ± 3.8 | 0.023 |
