Table 1.
Baseline cohort characteristics
| Variable | N (Total 873) | % |
|---|---|---|
| Sex | ||
| Male | 343 | 39·3 |
| Female | 528 | 60·5 |
| Unspecified or prefer not to say | 2 | 0·2 |
| Age group (years) | ||
| 5 or less | 26 | 3·0 |
| 6–16 | 65 | 7·5 |
| 17–35 | 57 | 6·5 |
| 36–55 | 170 | 19·5 |
| 56–70 | 377 | 43·2 |
| 71+ | 174 | 19·9 |
| Region | ||
| East Midlands | 81 | 9·3 |
| East of England | 130 | 14·9 |
| London | 73 | 8·4 |
| North East | 60 | 6·9 |
| North West | 92 | 10·5 |
| South East | 172 | 19·7 |
| South West | 100 | 11·5 |
| West Midlands | 93 | 10·7 |
| Yorkshire and The Humber | 69 | 7·9 |
| Index of multiple deprivation quintile | ||
| 1 (most deprived) | 49 | 5·6 |
| 2 | 155 | 17·8 |
| 3 | 206 | 23·6 |
| 4 | 218 | 25·0 |
| 5 (least deprived) | 242 | 27·7 |
| Ethnicity | ||
| White | 839 | 96·1 |
| Black | 4 | 0·5 |
| Asian | 12 | 1·4 |
| Mixed/ multiple ethnic background | 10 | 1·1 |
| Any other ethnic group | 7 | 0·8 |
| Long-term health condition | ||
| Yes | 302 | 34·6 |
| No | 571 | 65·4 |
| Number of GP visits in previous 12 months | ||
| 0 | 273 | 31·3 |
| 1–2 | 338 | 38·7 |
| 3–10 | 249 | 28·5 |
| 10 or more | 13 | 1·5 |
| Number of antibiotic prescriptions in last 12 months | ||
| 0 | 626 | 71·7 |
| 1 | 154 | 17·6 |
| 2 | 52 | 6·0 |
| 3–5 | 30 | 3·4 |
| 6+ | 11 | 1·3 |