R_INF_MORT = (INF_DEATHS:im * 1000.0) / BIRTH_TOT:total
| Data Role | Period Covered | Authority | Source | Details | Method |
|---|---|---|---|---|---|
| INF_DEATHS:im | 1911 to 1920 | RG_AR | Annual Report | Registrar General, Annual Report (HM Stationery Office) , | Exact count provided by a government statistical office for this area |
| INF_DEATHS:im | 1922 to 1973 | RG_SR | Statistical Review | Registrar General, Statistical Review (HM Stationery Office) , | Exact count provided by a government statistical office for this area |
Deaths per thousand live births. This is a good overall measure of the health of a population, although by the late twentieth century rates had become so low that just one death more or less could have a big impact on a district's relative performance.