We have analysed the adult life expectancy of the cohort of people mentioned in the family tree for whom we know the approximate birth and death dates. This we have compared with UK data for deaths from 1850-1975. The UK data is available in 25 year increments and we have weighted this data by the number of deaths according to the following table. War deaths are removed because they are not present in the UK data. As deaths shortly after birth are often not reported, we follow what is quite common in these analyses and only consider deaths after 20 years of age.
| Year of Death | UK Data | Number of “Oram” Deaths |
| 1789-1862 | 1850 | 22 |
| 1863-1887 | 1875 | 15 |
| 1888-1912 | 1900 | 27 |
| 1913-1937 | 1925 | 21 |
| 1938-1962 | 1950 | 35 |
| 1963-1987 | 1975 | 25 |
The analysis shows that our cohort have an average life expectancy of 69.3 yrs while the UK data have an expectancy of 67.8 yrs. This 1.5 year difference we suspect is partly due to the higher living standard of our cohort than the average in the UK. For instance our cohort, in the main, stayed in the countryside thus avoiding the deprevation of the large industial cities. Technical issues associated with the non-random selection of persons (we take anyone associated with the family we know the approximate birth and death date of ) may also be responsible for some of this 1.5 years difference.
The main difference between the UK data and our cohort is the peak is wider. This is a significant effect both the excess of deaths in the 50-70 range and the excess of persons living past 90 are statistically unlikely to be due to random flucuations. We speculate that this is because “life on the farm” was tough in the 19th century, causing early deaths, but retirement in the cleaner rural environment was easier.
So “75” contains the number of people who died between 70 and 79.