Table 2.
Total preterm births in the ten perinatal centers (singleton + multiples), per year
| All births (singleton + multiples) | Cohort 2015 | Cohort 2016 | Cohort 2017 | Cohort 2018 | Cohort 2020 |
|---|---|---|---|---|---|
| N = 26,437 | N = 27,504 | N = 26,780 | N = 26,605 | N = 26,924 | |
| Total PTB < 32 weeks, no (‰) | 234 (8.9) | 241 (8.7) | 240 (9.0) | 227 (8.5) | 200 (7.4) |
| Spontaneous PTB < 32 weeks, no (‰) | 128 (4.8) | 141 (5.1) | 144 (5.4) | 120 (4.5) | 141 (5.2) |
| Iatrogenic PTB < 32 weeks, no (‰) | 106 (4.0) | 100 (3.6) | 96 (3.6) | 107 (4.0) | 59 (2.2) |
| Total PTB < 28 weeks, no (‰) | 65 (2.5) | 64 (2.3) | 81 (3.0) | 75 (2.8) | 76 (2.8) |
| Spontaneous PTB < 28 weeks, no (‰) | 39 (1.5) | 40 (1.5) | 55 (2.1) | 45 (1.7) | 63 (2.3) |
| Iatrogenic PTB < 28 weeks, no (‰) | 26 (1.0) | 24 (0.9) | 26 (1.0) | 30 (1.1) | 13 (0.5) |
PTB preterm birth