n = denominator population patients aged 50 years and over |
a = number of unplanned hospital medical or geriatric admissions |
e = number of people ever admitted |
r = number of people who admitted more than once |
a/n = unplanned hospital admission per denominator population |
e/n = proportion of denominator population ever admitted |
(e-r)/n = single admitters as a proportion of the denominator population |
(r/n) = multiple admitters as a proportion of the denominator population |
(r/e) = multiple admissions per admitted patient |
(a-e)/e = re-admissions per admitted patient |
(a-e)/a = re-admissions as a proportion of all admissions |
(a-e+r)/r = total admissions per multiple admitter |
(a-e)/r = re-admissions per multiple admitter |
(a-e-r)/r = 3rd and higher order admissions per multiple admitter |