Table 1.
Distribution of live births stratified by gestational age categories and live newborn birthweight categories and stillbirths throughout the study periods
| Lockdown period | Deescalation period | Lockdown and deescalation period | Prelockdown comparison period | All prelockdown period | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| March 15–May 3 (2020)a | May 4–June 21 (2020)b | March 15–June 21 (2020) | March 15–May 3 (2015–2019) | January 1, 2015–March 14, 2020 | ||||||
| N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | |
| GA (weeks + days)a | ||||||||||
| ≥ 42 + 0 | 4 | 0.27 (0.01–0.53) | 2 | 0.13 (0.05–0.32) | 6 | 0.20 (0.04–0.36) | 15 | 0.17 (0.09–0.26) | 126 | 0.19 (0.16–0.23) |
| 37 + 0 to 41 + 6 | 1410 | 93.56 (92.32–94.80) | 1394 | 93.06 (91.77–94.34) | 2804 | 93.31 (92.42–94.20) | 8152 | 93.59 (93.08–94.11) | 61037 | 93.19 (93.00–93.38) |
| < 37 + 0 | 93 | 6.17 (4.96–7.39) | 102 | 6.81 (5.53–8.08) | 195 | 6.49 (5.61–7.37) | 543 | 6.23 (5.73–6.74) | 4333 | 6.64 (6.45–6.83) |
| 32 + 0 to 36 + 6 | 79 | 5.24 (4.12–6.37) | 91 | 6.07 (4.87–7.28) | 170 | 5.66 (4.83–6.48) | 471 | 5.41 (4.93–5.88) | 3760 | 5.74 (5.56–5.92) |
| 28 + 0 to 31 + 6 | 6 | 0.40 (0.08–0.72) | 8 | 0.53 (0.16–0.90) | 14 | 0.47 (0.22–0.71) | 43 | 0.50 (0.35–0.65) | 392 | 0.60 (0.54–0.66) |
| 23 + 0 to 27 + 6 | 8 | 0.53 (0.16–0.90) | 3 | 0.20 (0.03–0.43) | 11 | 0.37 (0.15–0.58) | 29 | 0.34 (0.22–0.46) | 181 | 0.28 (0.24–0.32) |
| VLBW | 17 | 1.11 (0.59–1.64) | 13 | 0.85 (0.39–1.32) | 30 | 0.98 (0.63–1.33) | 66 | 0.76 (0.58–0.95) | 653 | 0.98 (0.91–1.05) |
| ELBW | 10 | 0.65 (0.25–1.06) | 4 | 0.26 (0.01–0.52) | 14 | 0.46 (0.22–0.70) | 25 | 0.29 (0.18–0.40) | 224 | 0.34 (0.29–0.38) |
| Stillbirthsb | 5 | 0.33 (0.04–0.61) | 9 | 0.59 (0.20–0.97) | 14 | 0.46 (0.22–0.70) | 30 | 0.34 (0.22–0.46) | 295 | 0.44 (0.39–0.49) |
GA gestational age, VLBW very low birth weight (< 1500 g), ELBW extremely low birth weight (< 1000 g)
aGestational age of two births and birthweight of 17 infants could not be retrieved and were not included in the table
bStillbirths included deaths ≥ 23 +0 weeks’ gestational age