Table E4.
Results after using a more strict eczema definition for the first year of life: Incidence rates and rate ratios of eczema by sociodemographic factors stratified by age (N = 675,087 for analysis on sex and Index of Multiple Deprivation and N = 247,798 for analysis on ethnicity)
| Characteristic | <1-y-olds (n of eczema = 39,579) |
1-4-y-olds (n of eczema = 34,729) |
5-17-y-olds (n of eczema = 7,828) |
|||
|---|---|---|---|---|---|---|
| Rate∗ (95% CI) | aRR† (95% CI) | Rate∗ (95% CI) | aRR† (95% CI) | Rate∗ (95% CI) | aRR† (95% CI) | |
| Sex | ||||||
| Male | 11.0 (10.9-11.2) | 1.3 (1.3-1.3) | 2.9 (2.8-2.9) | 1.0 (0.9-1.0) | 0.4 (0.3-0.4) | 0.7 (0.7-0.9) |
| Female | 8.2 (8.1-8.3) | Reference | 2.9 (2.9-3.0) | Reference | 0.5 (0.5-0.5) | Reference |
| Index of Multiple Deprivation | ||||||
| 1 (least deprived) | 11.2 (11.0-11.4) | 1.3 (1.2-1.4) | 3.1 (3.1-3.2) | 1.2 (1.1-1.2) | 0.4 (0.4-0.4) | 0.9 (0.9-1.0) |
| 2 | 9.7 (9.5-9.9) | 1.1 (1.1-1.2) | 2.9 (2.9-3.0) | 1.1 (1.0-1.1) | 0.4 (0.4-0.4) | 0.9 (0.9-1.0) |
| 3 | 9.4 (9.2-9.6) | 1.0 (0.9-1.1) | 2.8 (2.7-2.9) | 1.0 (1.0-1.0) | 0.4 (0.4-0.4) | 0.9 (0.9-1.0) |
| 4 | 8.9 (8.7-9.1) | 1.1 (1.0-1.1) | 2.8 (2.7-2.8) | 1.0 (1.0-1.1) | 0.4 (0.4-0.4) | 1.0 (0.9-1.1) |
| 5 (most deprived) | 8.7 (8.5-8.9) | Reference | 2.7 (2.6-2.8) | Reference | 0.4 (0.4-0.5) | Reference |
| Ethnicity | n of eczema = 18,583 | n of eczema = 12,862 | n of eczema = 391 | |||
| White | 8.6 (8.4-8.7) | Reference | 3.2 (3.1-3.2) | Reference | 0.4 (0.4-0.5) | Reference |
| Mixed | 11.9 (11.2-12.8) | 1.4 (1.3-1.5) | 3.5 (3.2-3.9) | 1.1 (1.0-1.2) | 0.5 (0.3-1.0) | 1.2 (0.6-2.3) |
| Black Caribbean | 20.6 (18.0-23.6) | 2.7 (2.4-3.1) | 5.3 (4.3-6.4) | 1.8 (1.4-2.2) | 1.5 (0.6-3.9) | 3.2 (1.2-8.7) |
| Black African | 15.3 (14.1-16.6) | 2.0 (1.8-2.2) | 3.8 (3.4-4.3) | 1.3 (1.1-1.4) | 1.1 (0.6-1.8) | 2.3 (1.3-4.1) |
| Black other | 18.6 (16.0-21.7) | 2.4 (2.1-2.8) | 3.8 (3.0-4.9) | 1.3 (1.0-1.6) | 2.4 (1.2-4.7) | 5.2 (2.5-10.5) |
| Indian | 17.3 (16.0-18.6) | 1.7 (1.3-2.3) | 4.0 (3.6-4.4) | 1.3 (1.1-1.4) | 0.9 (0.5-1.5) | 2.0 (1.2-3.4) |
| Bangladeshi | 23.4 (20.6-26.5) | 2.9 (2.6-3.3) | 5.1 (4.1-6.2) | 1.6 (1.3-2.0) | 0.9 (0.3-2.9) | 2.0 (0.6-6.1) |
| Pakistani | 14.1 (13.0-15.3) | 1.8 (1.6-1.9) | 4.0 (3.5-4.4) | 1.3 (1.1-1.4) | 0.8 (0.4-1.4) | 1.7 (0.9-3.0) |
| Chinese | 24.4 (20.9-28.5) | 2.8 (2.4-3.3) | 4.2 (3.1-5.7) | 1.3 (1.0-1.8) | 0.7 (0.1-4.6) | 1.5 (0.2-10.5) |
| Asian other | 15.1 (13.7-16.7) | 1.8 (1.6-2.0) | 4.2 (3.6-4.8) | 1.3 (1.1-1.5) | 1.7 (0.9-3.1) | 3.7 (2.0-6.8) |
| Other | 9.9 (8.8-11.0) | 1.2 (1.1-1.4) | 3.4 (3.0-4.0) | 1.1 (1.0-1.3) | 0.7 (0.3-1.7) | 1.5 (0.6-3.7) |
∗
Rate per 100 person-years.
†
Model adjusted for sex, Index of Multiple Deprivation, and the number of annual consultations during the study follow-up period.