Klein R, Klein B E, Moss S E, Davis M D, DeMets D L
Diabetes Care. 1985 Jul-Aug;8(4):311-5. doi: 10.2337/diacare.8.4.311.
The relative importance of duration of diabetes before and after 13 yr of age as a risk factor for retinopathy was investigated using data from 200 persons who were younger than 26 yr of age. These persons were identified in a population-based study of diabetic retinopathy in southern Wisconsin in 1980-1982. Retinopathy was found in 9% of persons who were younger than 13 yr and in 34% of persons who were 13 yr or older and had been diagnosed at or after 13 yr. Presence of retinopathy was more strongly associated with the duration of diabetes after 13 yr of age than before it.
利用200名年龄小于26岁者的数据，研究了13岁之前和之后患糖尿病的时长作为视网膜病变风险因素的相对重要性。这些人是在1980 - 1982年对威斯康星州南部糖尿病视网膜病变进行的一项基于人群的研究中确定的。在13岁以下的人群中，9%发现有视网膜病变；在13岁及以上且在13岁或之后被诊断出糖尿病的人群中，34%发现有视网膜病变。视网膜病变的存在与13岁之后患糖尿病的时长比13岁之前的时长关联更强。
