Research Article
Functional Polymorphisms of Matrix Metalloproteinases 1 and 9 Genes in Women with Spontaneous Preterm Birth
Table 1
Characteristics of women with SPTB and their newborn children.
| Maternal characteristicsa | |
| Maternal age at delivery (years)b | 30 [18–41] | Gestational age at delivery, (%) | | Severe preterm <33 weeks | 29 (26.9) | Moderate preterm 34–37 weeks | 79 (73.1) | Smoking during pregnancy, (%) | | Yes | 11 (10.2) | No | 97 (89.8) | PTB in mother and/or sibling(s), (%) | | Yes | 33 (30.6) | No | 75 (69.4) | Parity, (%) | | 1 | 65 (60.2) | ≥2 | 43 (39.8) |
| Newborn characteristicsc | |
| Mean birth weight (grams)b | 2325 [260–3915] | Congenital anomalies, | 0 | Evidence of infection, | 0 |
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Available for 108 women with PTB. Data is presented as mean and range in parenthesis. Available for 108 newborn children of women with PTB.
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