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Table 1 Prevalence of detectable C-peptide by age at onset and duration (years)

From: Persistent C-peptide secretion in Type 1 diabetes and its relationship to the genetic architecture of diabetes

Age at onset 0 to 15 15 to 25 25 to 35 35–
Duration     
0 to 5 76% 13/17 96% 178/186 94% 161/172 92% 262/285
5 to 10 62% 79/128 67% 110/165 78% 107/138 74% 188/253
10 to 15 25% 60/237 55% 89/163 52% 103/197 57% 129/225
15 or more 19% 317/1643 26% 259/996 36% 253/705 42% 174/418
All 23% 469/2025 42% 636/1510 51% 624/1212 64% 753/1181