Table 1.
Patients’ demographic and clinical characteristics.
| All Women | Cases with Cervical Length ≤ 25 mm | Controls with Cervical Length > 25 mm | p-Value | |
|---|---|---|---|---|
| Number of enrolled pregnant women | 97 | 68 | 29 | / |
| Ethnicity n (%) Caucasian Asian North-African |
95 (98%) 1 (1%) 1 (1%) |
66 (97%) 1 (1.4%) 1(1.4%) |
29 (100%) 0 0 |
/ |
| Body mass index mean ± SD |
23.6 ± 5.4 | 23.0 ± 4.97 | 24.9 ± 6.1 | 0.16 |
| Smoking * n/nTot (%) | 8/91 (8.8%) | 7/68 (10.3%) | 1/23 (4.3%) | 0.67 |
| Age at sampling (years) mean ± SD |
33.8 ± 6.4 | 33.7 ± 6.4 | 34.0 ± 6.4 | 0.993 |
| Gestational age at sampling (weeks) mean ± SD |
28.4 ± 2.6 | 28.2 ± 2.5 | 28.6 ± 3.0 | 0.775 |
| Length of the cervix at sampling (mm) mean ± SD |
20.0 ± 9.5 | 15.1 ± 5.8 | 31.6 ± 5.7 | <0.001 *** |
| Gestational diabetes mellitus n (%) |
27 (27.8%) | 17 (25%) | 10 (14.7%) | 0.352 |
| Gestational age at delivery (weeks) mean ± SD |
37.6 ± 2.9 | 37.5 ± 2.7 | 37.6 ± 3.3 | 0.145 |
Demographic and clinical information on the enrolled patients was reported with p-value after a group comparison Fisher’s Exact test was performed for smoking frequency comparison, a Kruskal–Wallis test was performed for body mass index comparison and an Anova test was performed for all other comparisons. * Missing data for 6 subjects. *** p-value < 0.001.