Table 3 Current clinical practice - treatments for women at risk of preterm birth
| Â | Â | Treatment used in clinical practice | ||
|---|---|---|---|---|
Current clinical practice | Progesterone supplementation in multiple pregnancies (n = 544) | Progesterone supplementation in singleton pregnancies (n = 544) | Cerclage (n = 544) | |
   use this treatment | 17 (3.2%) | 51 (9.7%) | 317 (62.8%) | |
   do not use this treatment | 520 (96.8%) | 476 (90.3%) | 188 (37.2%) | |
   missing | 7 | 17 | 39 | |
For 'YES' ONLY | n = 17 | n = 51 | n = 317 | |
Risk factors influencing decision * | Â | Â | Â | |
   previous preterm delivery | 17 (100.0%) | 49 (96.1%) | 176 (55.5%) | |
   hort cervix | 12 (70.6%) | 20 (39.6%) | 190 (59.9%) | |
   previous surgery | 6 (35.3%) | 8 (15.7%) | 96 (30.3%) | |
   previous PPROM | 9 (52.9%) | 24 (47.1%) | 38 (12.0%) | |
   positive FFN test | 8 (47.1%) | 12 (23.5%) | 8 (2.5%) | |
   multiple gestation | not noted | not noted | 20 (6.3%) | |
   incompetent cervix | not noted | not noted | 139 (43.8%) | |
Route of administration favoured * | oral | 4 (23.5%) | 14 (27.5%) | not applicable |
| Â | IM | 3 (17.6%) | 7 (13.7%) | Â |
| Â | vaginal | 11 (64.7%) | 37 (72.5%) | Â |
Earliest gestational age treatment starts | mean weeks | 12 (SD 8) range 2 to 30 missing 1 | 13 (SD 5) range 4 to 24 missing 1 | surgery not before: 13 (SD 2) range 7 to 18 missing 23 |
Latest gestational age treatment stops | mean weeks | 27 (SD 10) range 12 to 36 missing 1 | 29 (SD 8) range 12 to 36 missing 1 | surgery not after: 22 (SD 4) range 12 to 34 missing 47 |