Table 8.
Subgroup analysis for pregnancy outcomes according to isolated TPOAb tertiles.
| Outcomes | Low titers | High titers | P Values |
|---|---|---|---|
| Clinical pregnancya, No. (%) | 38/82 (46.3) | 34/81 (42.0) | 0.575 |
| Miscarriageb, No. (%) | 7/38 (18.4) | 3/34 (8.8) | 0.240 |
| Live birthc, No. (%) | 31/82 (37.8) | 31/81 (38.3) | 0.951 |
| Preterm deliveryd, No. (%) | 7/31 (22.6) | 6/31(19.4) | 0.755 |
| Birth weight-g | |||
| Singleton | 3200 (2800-3500) | 3300 (3100-3500) | 0.356 |
| Twin | 2500 (1387.5-2765) | 2425 (2052.5-2582) | 0.678 |
aClinical pregnancy was defined as at least one gestational sac in the uterus at 35 days after embryo transfer as identified on ultrasonography.
bMiscarriage was defined as loss of clinical pregnancy before 28 weeks gestation.
cLive birth was defined as the delivery of at least one survived newborn, irrespective of gestation duration.
dPreterm delivery was defined as delivery of a living fetus before 37 weeks.