Table 3.
Outcomes of non-cancelled first cycles by endometrial thickness on day of ovulation trigger.
| Positive β-hCG | Miscarriagea | Live birth | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
||||||||
| Endometrial thickness (mm) |
N | Incidence N (%) |
Crude RR (95% CI) |
Adjustedb RR (95% CI) |
Incidence N (%) |
Crude RR (95% CI) |
Adjustedb RR (95% CI) |
Incidence N (%) |
Crude RR (95% CI) |
Adjustedb RR (95% CI) |
| ≤5 | 50 | 13 (26.0) | 0.60 (0.38–0.97) | 0.70 (0.39–1.27) | 4 (8.0) | 0.71 (0.26–1.90) | 0.97 (0.31–3.03) | 9 (18.0) | 0.60 (0.33–1.08) | 0.61 (0.26–1.44) |
| >5 to ≤7 | 265 | 90 (34.0) | 0.79 (0.66–0.94) | 0.72 (0.56–0.92) | 34 (12.8) | 1.14 (0.80–1.62) | 1.09 (0.68–1.74) | 53 (20.0) | 0.66 (0.52–0.85) | 0.57 (0.39–0.82) |
| >7 to ≤9 | 1090 | 420 (38.5) | 0.90 (0.82–0.98) | 0.92 (0.83–1.03) | 147 (13.5) | 1.20 (0.98–1.46) | 1.30 (1.03–1.66) | 257 (23.6) | 0.78 (0.69–0.88) | 0.77 (0.65–0.89) |
| >9 to ≤11 | 2679 | 1152 (43.0) | REF | REF | 302 (11.3) | REF | REF | 808 (30.2) | REF | REF |
| >11 to ≤13 | 1287 | 563 (43.8) | 1.02 (0.94–1.10) | 1.07 (0.97–1.18) | 124 (9.6) | 0.85 (0.69–1.05) | 1.00 (0.77–1.30) | 418 (32.5) | 1.07 (0.97–1.19) | 1.10 (0.97–1.25) |
| >13 to ≤15 | 527 | 241 (45.7) | 1.06 (0.96–1.18) | 1.13 (1.0–1.29) | 72 (13.7) | 1.21 (0.94–1.57) | 1.29 (0.92–1.80) | 161 (30.6) | 1.01 (0.88–1.17) | 1.13 (0.95–1.35) |
| >15 to ≤17 | 192 | 95 (49.5) | 1.15 (0.99–1.34) | 1.27 (1.05–1.53) | 23 (12.0) | 1.06 (0.70–1.62) | 1.13 (0.65–1.99) | 72 (37.5) | 1.24 (1.03–1.51) | 1.41 (1.10–1.80) |
| >17 | 90 | 38 (42.2) | 0.98 (0.77–1.26) | 1.0 (0.67–1.47) | 12 (13.3) | 1.18 (0.66–2.11) | 1.12 (0.46–2.73) | 26 (28.9) | 0.96 (0.69–1.33) | 1.03 (0.61–1.75) |
RR: risk ratio; CI: confidence interval.
a
Excludes ectopic pregnancy and induced abortion.
b
Adjusted for age, body mass index, peak progesterone, peak oestradiol, and number of oocytes retrieved.