Q. 4 Investigators enrolled 100 diabetics without eye disease in a follow-up study. The results of the first 3 years were as follows: Year 1:0 cases of eye disease detected out of 92; 8 lost to...

Extracted text: Q. 4 Investigators enrolled 100 diabetics without eye disease in a follow-up study. The results of the first 3 years were as follows: Year 1:0 cases of eye disease detected out of 92; 8 lost to follow-up Year 2: 2 new cases of eye disease detected out of 80; 2 had died; 10 lost to follow-up Year 3: 3 new cases of eye disease detected out of 63; 2 more had died; 13 more lost to follow-up. Find the person-time ve incidence rate.