Diabetes duration <1 year 1-4 years 5-10 years 1-4 years >20 years
  n=22 n=69 n=81 n=100 n=71
Amylin, pM/dL, median 26.2 28.2 26 17.9 13
(Q1, Q3)** (13.4, 69.6) (15.8, 57.3) (11.4, 48.0) (9.9, 41.4) (5.8, 29.2)
Insulin treatment, n (%)*** 0 (0.0) 6 (8.7) 18 (22.2) 38 (38.0) 37 (52.1)
Cardiovascular disease, n (%)* 13 (59.1) 24 (35.8) 42 (52.5) 56 (56.6) 44 (63.8)
Stroke, n (%) 3 (13.6) 14 (20.3) 19 (23.1) 31 (31.3) 20 (29.4)
Diabetic subjects are divided into three subgroups based on disease duration:<1 year; 1-4 years; 5-9 years; 10-20 years and >20 years. n/total with Fisher exact test or mean ± SD with ANOVA test or is used to describe the normal distributions and comparisons of those with insulin treatment, amylin concentration and the vascular complications across five subgroups.
P values for the statistical significance are shown with *p<0.05; **p<0.001; ***p<0.0001
Table 2: Comparisons of plasma amylin concentration and other variables among the diabetic subgroups with different disease duration