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. 2009 Nov 4;2009:947981. doi: 10.1155/2009/947981

Table 2.

Demographic data of women with preterm labor and premature rupture of membranes (N = 19) and women delivering at term (N = 19).

Groups Preterm delivery with premature rupture of membranes (N = 19) Mean ± SD/Median (Range) Controls (N = 19) Mean ± SD/Median (Range) P value
Gestational age at delivery (weeks) 36 (22–37.6) 38.6 (37.3–39.9) <.001
Gestational age at amniocentesis (weeks) 17.9 (15.6–25.4) 17.4 (15.9–23.7) NS
Birth weight (g) 2508.3 ± 657.7 3234.2 ± 416.3 <.001
Age (years) 37 (27–43) 37 (29–44) NS
<35 N (%) 5 (26.3) 6 (31.6)
>=35 N (%) 14 (73.7) 13 (68.4)
Parity NS
First N (%) 9 (47.4) 7 (36.8)
Other N (%) 10 (52.6) 12 (63.2)
Smoking before pregnancy N (%) 7 (36.8) 6 (31.6) NS
Smoking during pregnancy N (%) 4 (21.1) 2 (10.5) NS
Alcohol Consumption before pregnancy N (%) 4 (21.1) 7 (36.8) NS
Alcohol Consumption during pregnancy N (%) 1 (5.3) 1 (5.3) NS
Use of drugs 4 (21.1) 7 (36.8) NS