Table 1 Basic patient characteristics: comparison of the analysed study population and patients lost to follow-up
Analzyed patients | Lost to follow-up | p | ||
|---|---|---|---|---|
(n = 88) | (n = 33) | |||
Age (years)c | 31 (29;36) | 32 (27;38) | 0.828 | |
Body mass index (kg/m2)c | 24.1 (20.9; 28.5) | 22.2 (21.1;26.4) | 0.604 | |
Previous preterm deliveryd | 40 (45.5) | 15 (45.5) | 1.000 | |
Previous second trimester miscarriaged | 59 (67.0) | 20 (60.6) | 0.508 | |
Previous conizationd | 15 (17.0) | 4 (12.1) | 0.587 | |
Pregnancy after IVF treatmentd | 5 (5.7) | 4 (12.1) | 0.254 | |
Urinary tract infection during pregnancyd | 2 (2.3) | 3 (9.1) | 0.124 | |
Parity | 0 | 19 (21.6) | 8 (24.2) | 0.932 |
1 | 31 (35.2) | 11 (33.3) | ||
≥2 | 38 (43.2) | 14 (42.4) | ||
Cigarette smokingd | 15 (17.0) | 3 (9.1) | 0.392 | |
Gestational age at cerclagec | 16 (16;18) | 16 (16;18) | 0.496 | |