front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |24 |25 |26 |27 |28 |29 |review |
Age and year of
diagnosis are not independent.
To see this, try to draw graphs showing roughly the number of children in the cohort each year in the age groups 0-14, 15-24 and 25+ years. Remember it is a BIRTH cohort and about 6,000 children are born in Cumbria every year, so the number of children in the cohort increases by about 6,000 every year.
|