Table 5.
Smallpox and all‐cause mortality rates in St Martin in the Fields derived from family reconstitution
| Age (months) | Probability of dying in age interval *1,000 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Smallpox | All‐cause | Smallpox % of all‐cause | |||||||
| 1752–66 | 1775–99 | 1800–12 | 1752–66 | 1775–99 | 1800–12 | 1752–66 | 1775–99 | 1800–12 | |
| Unadjusted | |||||||||
| 0–5 | 4.0 | 6.5 | 3.7 | 179.7 | 130.4 | 99.8 | 2.2 | 5.0 | 3.7 |
| 6–11 | 9.5 | 13.7 | 7.6 | 72.2 | 69.9 | 55.7 | 13.2 | 19.6 | 13.7 |
| 12–23 | 13.6 | 23.4 | 5.8 | 105.4 | 106.5 | 75.8 | 12.9 | 22.0 | 7.6 |
| 0–23 | 26.9 | 43.0 | 17.0 | 319.1 | 277.3 | 214.3 | 8.4 | 15.5 | 7.9 |
| Adjusted for missing causes of death | |||||||||
| 0–5 | 4.9 | 7.2 | 3.8 | 2.7 | 5.5 | 3.8 | |||
| 6–11 | 13.3 | 15.4 | 7.8 | 18.5 | 22.0 | 14.0 | |||
| 12–23 | 18.1 | 26.8 | 6.1 | 17.2 | 25.2 | 8.0 | |||
| 0–23 | 35.1 | 48.6 | 17.6 | 11.0 | 17.5 | 8.2 | |||
| Adjusted for missing causes of death and missing infants (presumed sent to nurse) | |||||||||
| 0–5 | 5.5 | 7.8 | 4.1 | 200.1 | 141.7 | 106.6 | 2.7 | 5.5 | 3.8 |
| 6–11 | 16.2 | 17.8 | 8.9 | 87.7 | 80.7 | 63.4 | 18.5 | 22.0 | 14.0 |
| 12–23 | 23.7 | 31.2 | 6.9 | 137.7 | 124.0 | 86.7 | 17.2 | 25.2 | 8.0 |
| 0–23 | 40.8 | 54.1 | 19.4 | 370.7 | 308.8 | 235.7 | 11.0 | 17.5 | 8.2 |
| Adjusted for missing causes of death and missing infants (presumed exported for burial) | |||||||||
| 0–5 | 9.6 | 13.5 | 7.6 | 349.2 | 246.2 | 199.6 | 2.7 | 5.5 | 3.8 |
| 6–11 | 26.8 | 27.9 | 14.8 | 145.1 | 126.6 | 105.5 | 18.5 | 22.0 | 14.0 |
| 12–23 | 31.4 | 43.9 | 11.5 | 182.4 | 174.2 | 144.1 | 17.2 | 25.2 | 8.0 |
| 0–23 | 59.9 | 79.9 | 31.9 | 545.1 | 456.3 | 387.2 | 11.0 | 17.5 | 8.2 |
Notes: All‐cause rates were adjusted for the unobserved effect of infants removed from observation alive by subtracting the missing infants (as calculated from birth interval analysis) from the population at risk at ages 15 and 182 days in the proportions 10% and 90% of missing infants. This was a crude adjustment based on the average age at baptism and average length of birth intervals: changes in the ages at which infants were subtracted did not affect calculated rates markedly. All‐cause rates were adjusted for the unobserved effect of infants removed from observation dead by adding missing infant burials to deaths at ages 15 and 182 days in the proportions 10% and 90% of missing infants. Smallpox rates were adjusted by multiplying the rate adjusted only for missing causes by the ratio of the adjusted to unadjusted all‐cause rates. The ratio of smallpox mortality to all‐cause mortality was the same for all adjusted rates because the method used to adjust smallpox rates for missing infants was to assume that the effect of missing infants on the smallpox mortality rate was the same as for all‐cause mortality.
Sources: Family reconstitution of St Martin in the Fields, CWAC, accessions 419/210–227, christening and marriage fee books.