Table 4 Changes in singleton preterm births according to periods and years
From: Effects of the COVID-19 pandemic on perinatal outcomes: a retrospective cohort study from Turkey
Preterm births, 2019 n(%) | Preterm births, 2020 n(%) | Model 1 Adjusted OR (95% CI) | p | Model 2 Adjusted OR (95% CI) | P | |
|---|---|---|---|---|---|---|
Singleton preterm births | ||||||
Period 1 Jan, Feb | 14,673 (8.4) | 15,059 (9.0) | 1.00 | 1.00 | ||
Period 2 March, May | 24,301 (8.9) | 22,336 (8.8) | 0.92 (0.89, 0.95) | < 0.001 | 0.92 (0.89, 0.95) | < 0.001 |
Period 3 June, August | 26,888 (9.0) | 26,331 (9.2) | 0.95 (0.92, 0.98) | 0.001 | 0.94 (0.91, 0.97) | < 0.001 |
Period 4 September, October | 16,997 (9.2) | 16,285 (9.2) | 0.93 (0.90, 0.96) | < 0.001 | 0.92 (0.89, 0.95) | < 0.001 |
Period 5 November, December | 16,085 (9.2) | 14,791 (9.2) | 0.92 (0.89, 0.95) | < 0.001 | 0.92 (0.89, 0.95) | < 0.001 |
Total | 98,944. (9.0) | 94,802 (9.1) | ||||
Spontan singleton preterm births | ||||||
Period 1 Jan, Feb | 3515 (5.4) | 3684 (6.1) | 1.00 | 1.00 | ||
Period 2 March, May | 5863 (5.7) | 5338 (5.8) | 0.90 (0.85, 0.96) | 0.001 | 0.90 (0.85, 0.96) | 0.001 |
Period 3 June, August | 6998 (6.0) | 6391 (6.2) | 0.92 (0.86, 0.97) | 0.004 | 0.91 (0.86, 0.97) | 0.002 |
Period 4 September, October | 4498 (6.4) | 3923 (6.3) | 0.87 (0.82, 0.93) | < 0.001 | 0.86 (0.81, 0.92) | < 0.001 |
Period 5 November, December | 4167 (6.4) | 3641 (6.4) | 0.88 (0.83, 0.94) | < 0.001 | 0.87 (0.82, 0.93) | < 0.001 |
Total | 25,041 (6.0) | 22,977 (6.1) | ||||
Induced or ceserean singleton preterm births | ||||||
Period 1 Jan, Feb | 11,158 (10.2) | 11,375 (10.7) | 1.00 | 1.00 | ||
Period 2 March, May | 18,438 (10.9) | 16,998 (10.5) | 0.92 (0.89, 0.96) | < 0.001 | 0.93 (0.89, 0.96) | < 0.001 |
Period 3 June, August | 19,890 (10.9) | 19,940 (10.8) | 0.95 (0.91, 0.98) | 0.002 | 0.95 (0.92, 0.98) | 0.004 |
Period 4 September, October | 12,499 (10.9) | 12,362 (10.7) | 0.93 (0.90, 0.97) | < 0.001 | 0.94 (0.90, 0.97) | 0.001 |
Period 5 November, December | 11,918 (11.0) | 11,150 (10.7) | 0.93 (0.89, 0.97) | < 0.001 | 0.94 (0.90, 0.97) | 0.001 |
Total | 73,903 (10.8) | 71,825 (10.7) | ||||