Incidence rate per 1000 births and incidence rate ratios unadjusted and adjusted for year of birth for extremely preterm and very preterm birth by deprivation decile
| Deprivation decile | All births | Extremely preterm birth (22–28 weeks) | Very preterm birth (22–32 weeks) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of births | Unadjusted incidence/1000 births (95% CI) | Unadjusted incidence rate ratio (95% CI) | Adjusted incidence rate ratio (95% CI) | Number of births | Unadjusted incidence/1000 births (95% CI) | Unadjusted incidencerate ratio (95% CI) | Adjusted incidence rate ratio (95% CI) | ||
| –, no associated confidence interval. | |||||||||
| Least deprived 1 | 55 011 | 180 | 3.3 (2.8,3.8) | 1 (–) | 1(–) | 467 | 8.5 (7.8,9.3) | 1(–) | 1(–) |
| 2 | 54 948 | 213 | 3.9 (3.4,4.4) | 1.18 (0.97,1.44) | 1.18 (0.97,1.44) | 574 | 10.4 (9.6,11.3) | 1.23 (1.09,1.39) | 1.23 (1.09,1.39) |
| 3 | 54 530 | 190 | 3.5 (3.0,4.0) | 1.06 (0.87,1.31) | 1.06 (0.87,1.31) | 546 | 10.0 (9.2,10.9) | 1.18 (1.04,1.34) | 1.18 (1.04,1.34) |
| 4 | 55 053 | 232 | 4.2 (3.7,4.8) | 1.29 (1.06,1.56) | 1.29 (1.06,1.56) | 687 | 12.5 (11.6,13.4) | 1.47 (1.31,1.65) | 1.47 (1.31,1.65) |
| 5 | 55 250 | 268 | 4.9 (4.3,5.5) | 1.48 (1.23,1.79) | 1.48 (1.23,1.79) | 692 | 12.5 (11.6,13.4) | 1.48 (1.31,1.66) | 1.48 (1.31,1.66) |
| 6 | 54 514 | 295 | 5.4 (4.8,6.1) | 1.65 (1.37,1.99) | 1.65 (1.37,1.99) | 786 | 14.4 (13.4,15.5) | 1.70 (1.51,1.90) | 1.70 (1.51,1.90) |
| 7 | 55 115 | 268 | 4.9 (4.3,5.5) | 1.49 (1.23,1.80) | 1.49 (1.23,1.80) | 775 | 14.1 (13.1,15.1) | 1.66 (1.48,1.86) | 1.66 (1.48,1.86) |
| 8 | 55 638 | 326 | 5.9 (5.3,6.5) | 1.79 (1.49,2.15) | 1.79 (1.49,2.15) | 885 | 15.9 (14.9,17.0) | 1.87 (1.68,2.10) | 1.87 (1.68,2.10) |
| 9 | 55 197 | 338 | 6.1 (5.5,6.8) | 1.87 (1.56,2.24) | 1.87 (1.56,2.24) | 879 | 15.9 (14.9,17.0) | 1.88 (1.68,2.10) | 1.88 (1.68,2.10) |
| 10 Most deprived | 54 361 | 345 | 6.3 (5.7,7.0) | 1.94 (1.62,2.32) | 1.94 (1.62,2.32) | 894 | 16.4 (15.4,17.6) | 1.94 (1.73,2.17) | 1.94 (1.73,2.17) |