Although there were more PDR cases within the IDDM and insulin injection group, the total group number was too small as compared to the NIDDM and non-insulin injection group.

• 此外虽然注射胰岛素的族群与IDDM的族群本身，增殖性网膜症其他网膜变化为多，但族群数目仍太小而无法与未注射胰岛素的族群比较。