Distribution of the total population of women aged 20–44 years (N=720 357), number of small for gestational age (SGA) births and age-standardised incidence rates of SGA births (%) by neighbourhood-level deprivation
| SGA | |||||
|---|---|---|---|---|---|
| Neighbourhood deprivation* | |||||
| Distribution, % | Number (%) of SGA births | Low | Moderate | High | |
| Total number of women (percentage distribution) | 20 487 | 157 719 (21.9%) | 428 462 (59.5%) | 134 176 (18.6%) | |
| 2.5 | 2.8 | 3.5 | |||
| Age (years) | |||||
| 20–24 | 18.2 | 3768 (18.4) | 2.3 | 2.7 | 3.4 |
| 25–29 | 36.4 | 6613 (32.3) | 2.3 | 2.4 | 3.1 |
| 30–34 | 29.9 | 6090 (29.7) | 2.5 | 2.8 | 3.5 |
| 35–39 | 12.7 | 3174 (15.5) | 2.9 | 3.5 | 4.5 |
| 40–44 | 2.8 | 842 (4.1) | 3.6 | 4.1 | 5.2 |
| Marital status | |||||
| Married/cohabiting | 42.5 | 8119 (39.6) | 2.4 | 2.6 | 3.3 |
| Never married, widowed or divorced | 57.5 | 12 368 (60.4) | 2.7 | 2.9 | 3.6 |
| Family income (quartiles) | |||||
| Low income | 25.0 | 6591 (32.2) | 3.2 | 3.5 | 4.1 |
| Middle–low income | 25.1 | 4910 (24.0) | 2.6 | 2.6 | 3.1 |
| Middle–high income | 24.9 | 4537 (22.1) | 2.4 | 2.5 | 2.9 |
| High income | 25.0 | 4449 (21.7) | 2.3 | 2.5 | 3.1 |
| Educational attainment | |||||
| Compulsory school or less (≤9 years) | 13.2 | 3390 (16.5) | 3.1 | 3.4 | 4.0 |
| Practical high school or some theoretical high school (10–11 years) | 32.0 | 6822 (33.3) | 2.6 | 2.9 | 3.5 |
| Theoretical high school and/or college (≥12 years) | 54.8 | 10 275 (50.2) | 2.4 | 2.5 | 3.1 |
| Urban/rural status | |||||
| Large cities | 33.2 | 6941 (33.9) | 2.6 | 2.8 | 3.7 |
| Middle-sized towns | 34.2 | 6843 (33.4) | 2.4 | 2.7 | 3.3 |
| Small towns/rural areas | 32.5 | 6703 (32.7) | 2.5 | 2.7 | 3.5 |
| Employment | |||||
| Yes | 71.1 | 14 143 (69.0) | 2.5 | 2.7 | 3.3 |
| No | 28.9 | 6344 (31.0) | 2.5 | 2.8 | 3.7 |
| Mobility | |||||
| Did not move | 73.3 | 14 794 (72.2) | 2.5 | 2.7 | 3.5 |
| Consistently low/moderate deprivation | 11.7 | 2319 (11.3) | 2.6 | 2.8 | – |
| Consistently high deprivation | 2.1 | 594 (2.9) | – | – | 4.0 |
| Downward mobility | 5.5 | 1205 (5.9) | – | 2.8 | 3.3 |
| Upward mobility | 7.4 | 1575 (7.7) | 2.7 | 3.2 | – |
All women were followed up for first singleton birth between 1 January 1992 and 31 December 2004.
↵* Low deprivation neighbourhoods represent the most affluent neighbourhoods and high deprivation neighbourhoods represent the most deprived neighbourhoods.