Table 1.
Demographic characteristics of MS cases and controls in the UK CPRD Aurum dataset
| MS status | UK Census (2011) | ||
|---|---|---|---|
| Control | Case | ||
| N | 118,914 | 9662 | 56.1 million |
| Gender | |||
| Female | 60,130 (50.6%) | 6826 (70.6%) | 50.1% |
| Male | 58,784 (49.4%) | 2836 (29.4%) | 49.2% |
| Year of birth | 1963.8 (15.8) | 1965.4 (13.7) | |
| Index age (years) | 47.1 (13.9) | 45.6 (12.3) | Median 39 |
| Data prior to index date (years) | 15.3 (9.9) | 18 (11.2) | |
| Ethnic background | |||
| White | 75,860 (85.5%) | 8783 (92.5%) | 86% |
| Asian | 5043 (5.7%) | 277 (2.9%) | 5.3% |
| Black | 4019 (4.5%) | 251 (2.6%) | 3.4% |
| Mixed/Other | 3835 (4.3%) | 189 (2%) | 5.3% |
| IMD quintile | |||
| 1 (least deprived) | 23,352 (20.7%) | 2171 (23%) | |
| 2 | 23,024 (20.4%) | 2111 (22.4%) | |
| 3 | 22,510 (20%) | 1906 (20.2%) | |
| 4 | 23,196 (20.6%) | 1740 (18.5%) | |
| 5 (most deprived) | 20,527 (18.2%) | 1500 (15.9%) | |
| Location | |||
| Rural | 17,032 (15.1%) | 1707 (18.1%) | |
| Urban | 95,577 (84.9%) | 7721 (81.9%) | |