Characteristic

Value

Maternal age (median, interquartile)

27 [23.0, 30.5]

Gestational age at presentation (median, interquartile)

31 [28.8, 32.4]

Gestational age at delivery (median, interquartile)

37 [33.5, 38.6]

Cervical length at presentation (median, interquartile)

28 [20.0, 31.0]

Cervical length < 25 mm at presentation (count/percent)

17 (30%)

Corticosteroid therapy (count/percent)

38 (67%)

Count/percent delivered within 7 days

4 (11%)

Count/percent delivered within 14 days

6 (16%)

Tocolytic therapy (count/percent)

38 (67%)

Count/percent delivered within 7 days

6 (16%)

Count/percent delivered within 14 days

7 (18%)

Delivery < 34 weeks (count/percent)

16 (28%)

Delivery ≤ 7 days of presentation

6 (11%)