Beta coefficients (95% CI) from logistic regressions for time trend analysis of unfavourable birth outcomes by neighbourhood deprivation quintile, the Netherlands 2003–2017
| Variables | Perinatal mortality | Premature birth | SGA | |||
| Crude | Adjusted‡ | Crude | Adjusted‡ | Crude | Adjusted‡ | |
| Year† | −0.0003 (0.0003 to −0.0010)* | −0.0003 (−0.0003 to −0.0003)* | −0.0006 (−0.0008 to −0.0004)* | −0.0006 (−0.0008 to −0.0004)* | −0.0013 (−0.0015 to −0.0011)* | −0.0014 (−0.0016 to −0.0012)* |
| Neighbourhood deprivation quintile† | ||||||
| Q1 (least deprived) | REF | REF | REF | REF | REF | REF |
| Q2 | −0.0006 (−0.0012 to 0.0001)* | −0.0007 (−0.0013 to −0.0001)* | 0.0003 (−0.0015 to 0.0021) | −0.0003 (−0.0021 to 0.0015) | 0.0063 (0.0039 to 0.0087)* | 0.004 (0.0016 to 0.0064)* |
| Q3 | −0.0004 (−0.0001 to 0.0002) | −0.0006 (−0.0012 to 0.0001)* | 0.0031 (0.0013 to 0.0049)* | 0.0016 (−0.0002 to 0.0034) | 0.0141 (0.0117 to 0.0165)* | 0.0083 (0.0059 to 0.0107)* |
| Q4 | −0.0002 (−0.0008 to 0.0004) | −0.0005 (−0.0011 to 0.0001) | 0.0051 (0.0033 to 0.0069)* | 0.0023 (0.0005 to 0.0041)* | 0.0298 (0.0274 to 0.0322)* | 0.0188 (0.0164 to 0.0212)* |
| Q5 (most deprived) | 0.0017 (0.0011 to 0.0023)* | 0.0008 (0.0002 to 0.0014)* | 0.0110 (0.0092 to 0.0128)* | 0.0076 (0.0058 to 0.0094)* | 0.0565 (0.0541 to 0.0589)* | 0.0345 (0.0320 to 0.0370)* |
| Interaction deprivation quintile* year† | ||||||
| Q1 (least deprived) | REF | REF | REF | REF | REF | REF |
| Q2 | 0.0001 (0.0000 to 0.0002) | 0.0001 (0.0000 to 0.0002) | 0.0001 (−0.0001 to 0.0003) | 0.0000 (−0.0002 to 0.0002) | 0.0001 (−0.0002 to 0.0004) | 0.0001 (−0.0002 to 0.0004) |
| Q3 | 0.0000 (−0.0001 to 0.0001) | 0.0000 (−0.0001 to 0.0001) | 0.0000 (−0.0002 to 0.0002) | 0.0000 (−0.0002 to 0.0002) | 0.0002 (−0.0001 to 0.0005) | 0.0002 (−0.0001 to 0.0005) |
| Q4 | 0.0001 (0.0001 to 0.0002)* | 0.0001 (0.0000 to 0.0002) | 0.0001 (−0.0001 to 0.0003) | 0.0001 (−0.0001 to 0.0003) | −0.0002 (−0.0005 to 0.0001) | −0.0001 (−0.0004 to 0.0002) |
| Q5 (most deprived) | 0.0000 (−0.0001 to 0.0001) | −0.0001 (−0.0002 to 0.0000) | −0.0003 (−0.0005 to −0.0001)* | −0.0004 (−0.0006 to −0.0002)* | −0.0007 (−0.001 to −0.0004)* | −0.0004 (−0.0007 to −0.0001)* |
* p<0.05.
†Results from models with linear trend for year.
‡Adjusted for ethnicity, maternal age and parity.
CI, 95% confidence interval; SGA, small for gestational age.