After a median of 80 years ( IQR 79-99 ) of follow-up , the incidence of very-high-risk CKD was lower in the ILI group than in the DSE group , with incidence rates of 091 cases per 100 person-years in the DSE group and 063 per 100 person-years in the ILI group ( difference 027 cases per 100 person-years , hazard ratio 069 , 95 % CI 055-087 ; p = 00016 ) .