Total n = 48 | PTB n = 10 | Term delivery n = 38 | p-value | |
---|---|---|---|---|
Maternal age (IQR) | 35 (5) | 34 (6) | 35 (5) | 0.31 |
BMI at booking visit, median (IQR) | 21.5 (3.6) | 20.7(3.8) | 21.9(4.6) | 0.28 |
Gestational age of PTB symptoms (weeks),median(IQR) | 29.2 (3.8) | 30.7 | 28.9 | 0.82 |
Ethnicity | 0.11 | |||
Chinese | 45(94%) | 8 (80%) | 37 (97%) | |
Japanese | 1(2%) | 0 | 1 (3%) | |
Caucasian | 2(4%) | 2 (20%) | 0 | |
Obstetric history | 0.006 | |||
Nulliparous | 32(67%) | 3 (30%) | 29 (76%) | |
Multiparous | 16(33%) | 7(70%) | 9(24%) | |
History of PTB | 0.13 | |||
Without a history of PTB | 44(92%) | 8 (80%) | 36(95%) | |
With a history of PTB | 4(8%) | 2 (20%) | 2 (5%) | |
Mode of delivery | 0.57 | |||
Vaginal | 23(48%) | 4 (40%) | 19 (50%) | |
Caesarean section | 25(52%) | 6 (60%) | 19 (50%) | |
Delivery | ||||
< 24 h from testing | 4(8%) | 4 (40%) | 0 | |
< 48 h from testing | 1(2%) | 1 (10%) | 0 | |
< 7 days from testing | 2(4%) | 2 (20%) | 0 | |
< 14 days from testing | 0 | 0 | 0 | |
> 14 days from testing | 41(86%) | 3 (30%) | 38 (100%) | |
Gestation at delivery | ||||
< 34 weeks | 6(13%) | 6 (60%) | 0 | |
34–37 weeks | 4(8%) | 4 (40%) | 0 | |
> 37 weeks | 38(79%) | 0 | 38 (100%) | |
Tocolysis use | 0.001 | |||
Yes | 21(44%) | 9 (90%) | 12 (32%) | |
No | 27(56%) | 1 (10%) | 26 (68%) | |
Corticosteroid use | 0.001 | |||
Yes | 21(44%) | 9 (90%) | 12 (32%) | |
No | 27(56%) | 1 (10%) | 26 (68%) |