<Tr> <Th> Husband 6--9 years older than wife </Th> <Td> 11.6 </Td> </Tr> <Tr> <Th> Husband 4--5 years older than wife </Th> <Td> 13.3 </Td> </Tr> <Tr> <Th> Husband 2--3 years older than wife </Th> <Td> 20.4 </Td> </Tr> <Tr> <Th> Husband and wife within 1 year </Th> <Td> 33.2 </Td> </Tr>

What is the difference between life history pattern and age structure