Table 1 Maternal and infant characteristics according to the interval between prelabor rupture of membranes and delivery

Number of births

(100)

(100)

(100)

P-value

  < 19

(2.4)

(2.3)

(2.1)

 20–34

(81)

(83)

(81)

  > 35

(17)

(15)

(17)

0.55^c

 Para 0

(38)

(63)

(64)

  > 0 Para

(63)

(37)

(37)

< 0.001^c

Any maternal diagnosis before pregnancy

(41)

(42)

(44)

< 0.001^c

Any maternal diagnosis during pregnancy

(29)

(29)

(29)

0.096^c

 Diagnosed before pregnancy

(0.5)

(0.6)

(0.5)

 Gestational

(0.9)

(1.1)

(0.9)

0.007^d

Thyroid disease

(1.4)

(1.4)

(1.5)

0.046^c

Recurrent urinary tract infection

(3.1)

(3.4)

(3.6)

< 0.001^c

Chronic kidney disease

(0.5)

(0.5)

(0.5)

0.45^c

In vitro fertilization^g

(1.4)

(2.0)

(2.2)

< 0.001^c

 Cephalic

(93)

(91)

(92)

 Non-cephalic

(8)

(9)

(9)

< 0.001^c

Induction

(9)

(12)

(33)

< 0.001^c

 Elective

(6)

(0.2)

(0.6)

 Acute

(7)

(13)

(15)

 No

(87)

(87)

(85)

< 0.001^d

 Male

(51)

(53)

(52)

 Female

(49)

(47)

(48)

< 0.001^c

Small for gestational age

(1.4)

(1.1)

(1.3)

< 0.001^c

 0–3

(0.3)

(0.4)

(0.3)

 4–6

(0.6)

(1.2)

(1.3)

 7–10

(99)

(99)

(98)

< 0.001^c