Table 1.
Demographic data of women with preterm (N = 41) and term delivery (N = 41).
| Groups | Preterm delivery (N = 41) Mean ± SD/Median (Range) | Controls (N = 41) Mean ± SD/Median (Range) | P value |
|---|---|---|---|
| Gestational age at delivery (weeks) | 35.5 (22–37.6) | 38.4 (37–40) | <.001 |
| Gestational age at amniocentesis (weeks) | 17.9 (15.1–25.4) | 17.4 (15.9–23.7) | NS |
| Birth weight (g) | 2469.7 ± 582.6 | 3172 ± 378 | <.001 |
| Age (years) | 37 (27–43) | 37 (27–44) | NS |
| <35 N (%) | 15 (36.6) | 13 (31.7) | — |
| >=35 N (%) | 26 (63.4) | 28 (68.3) | — |
| Parity | — | — | NS |
| First N (%) | 16 (39) | 15 (36.6) | — |
| Other N (%) | 25 (61) | 26 (63.4) | — |
| Smoking before pregnancy N (%) | 16 (39) | 15 (36.6) | NS |
| Smoking during pregnancy N (%) | 8 (19.5) | 9 (22) | NS |
| Alcohol Consumption before pregnancy N (%) | 5 (12.2) | 11 (26.8) | NS |
| Alcohol Consumption during pregnancy N (%) | 1 (2.4) | 3 (7.3) | NS |
| Use of drugs | 13 (31.7) | 18 (43.9) | NS |