Table 3 Adjusted relative risk for live-birth according to cleavage-stage embryo quality stratified by EMT, and EMT stratified by cleavage-stage embryo quality
EMT | Q1 (n=770) | Q2 (n=2620) | Q3 (n=3315) | Q4 (n=3154) | Q5 (n=2993) | Q6 (n=1384) |
|---|---|---|---|---|---|---|
<11 mm | ||||||
 N live-births/N cycles (LBR per cycle, %) | 68/574 (11.8) | 457/1775 (25.7) | 759/2104 (36.1) | 754/1702 (44.3) | 803/1642 (48.9) | 318/796 (39.9) |
 aRR (95%CI) a | 1.00 (reference) | 1.86 (1.43–2.41) | 2.38 (1.84–3.09) | 2.85 (2.17–3.75) | 3.13 (2.38–4.12) | 3.67 (2.74–4.91) |
≥11 mm | ||||||
 N live-births/N cycles (LBR per cycle, %) | 36/196 (18.4) | 345/845 (40.8) | 589/1211 (48.6) | 836/1452 (57.6) | 826/1351 (61.1) | 295/588 (50.2) |
 aRR (95%CI) a | 1.00 (reference) | 2.05 (1.43–2.94) | 2.35 (1.64–3.37) | 2.68 (1.86–3.86) | 2.78 (1.93–4.00) | 2.75 (1.89–4.01) |
 aRR (95%CI) b | 0.95 (0.61–1.46) | 1.23 (1.09–1.40) | 1.18 (1.07–1.29) | 1.22 (1.13–1.32) | 1.17 (1.08–1.26) | 1.12 (0.98–1.27) |