BMD percentages??
I am looking for a death for a Mary Ann Nichols born 1838 living in Portsmouth in 1911 aged 74
3 likely ones
Mary A Nichols
1917 aged 74
1923 aged 89
1929 aged 91 which is the one I think and they were a long living family
what I dont get is the percentage
1917 says 99%
1923 91%
1929 89%
how do they arrive at this thanks
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Vallee
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