SIR Step 1

Organize your data into a table.

SUPERCLEAN Employees
Age (Yrs) (1)	N (Person-Time) (2)	Observed Cases (3)
20-25	5114	47
25-30	6048	71
30-35	5442	61
35-40	1071	15
Total	17,675	194

[ Definition ] [ Step 1 ] [ Step 2 ] [ Step 3 ] [ Step 4 ] [ Step 5 ]