Table 3 Demographic characteristics of patients in the case–control study
Characteristics | Case | Control | |||
|---|---|---|---|---|---|
N | % | N | % | ||
Total | Total | 552 | 100.0% | 2208 | 100.0% |
Gender | Female | 253 | 45.8% | 1012 | 45.8% |
Male | 299 | 54.2% | 1196 | 54.2% | |
Age at index date (in years) | Average | 19.95 | 19.95 | ||
Standard deviation | 26.16 | 26.15 | |||
Age group | <1 year | 127 | 23.0% | 508 | 23.0% |
1-4 years | 141 | 25.5% | 564 | 25.5% | |
5-14 years | 74 | 13.4% | 296 | 13.4% | |
15-24 years | 50 | 9.1% | 200 | 9.1% | |
25-49 years | 62 | 11.2% | 248 | 11.2% | |
50+ years | 98 | 17.8% | 392 | 17.8% | |
Region | East Midlands | 16 | 2.9% | 64 | 2.9% |
East of England | 47 | 8.5% | 188 | 8.5% | |
London | 86 | 15.6% | 344 | 15.6% | |
North East | 12 | 2.2% | 48 | 2.2% | |
North West | 115 | 20.8% | 460 | 20.8% | |
South Central | 55 | 10.0% | 220 | 10.0% | |
South East Coast | 63 | 11.4% | 252 | 11.4% | |
South West | 67 | 12.1% | 268 | 12.1% | |
West Midlands | 70 | 12.7% | 280 | 12.7% | |
Yorkshire and the Humber | 21 | 3.8% | 84 | 3.8% | |
Race | Missing | 14 | 2.5% | 294 | 13.3% |
Black African | 3 | 0.5% | 27 | 1.2% | |
Black Caribbean | 3 | 0.5% | 12 | 0.5% | |
Black other | 3 | 0.5% | 8 | 0.4% | |
Indian, Pakistani, and Bangladeshi | 9 | 1.6% | 69 | 3.1% | |
Other and mixed | 23 | 4.2% | 76 | 3.4% | |
Other Asian | 6 | 1.1% | 38 | 1.7% | |
White | 491 | 88.9% | 1684 | 76.3% | |