Table 1 Demographic and clinical characteristics of exposure and control groups
From: Effect of initial COVID-19 outbreak during first trimester on pregnancy outcome in Wuxi, China
variables | exposure group (n = 1,456) | control group (n = 1,816) | P-value | |
|---|---|---|---|---|
Age (years) | Mean ± SDa | 29.88 ± 4.08 | 29.75 ± 4.16 | 0.365 |
Obesity (%) | Yes | 40 (2.7) | 54(3.0) | 0.753 |
Gravida | Median (25%-75%) | 2 (1–3) | 2 (1–3) | 0.452 |
Parity | Median (25%-75%) | 1 (1–2) | 1 (1–2) | 0.132 |
Gestational weeks | Mean ± SDa | 38.89 ± 1.73 | 39.19 ± 1.24 | < 0.001* |
Multiple pregnancy (%) | Yes | 20 (1.4) | 34 (1.9) | 0.266 |
History of cesarean delivery and myomectomy (%) | Yes | 303 (20.8) | 347 (19.1) | 0.225 |
In vitro fertilization (%) | Yes | 39 (2.7) | 107 (5.9) | < 0.001* |
Carriage of HBVb (%) | Yes | 62 (4.3) | 54 (3.0) | 0.057 |
Fibroid (%) | Yes | 44 (3.0) | 78 (4.3) | 0.063 |