Table 1 —

Frequency of documentation and presence or absence of selected characteristics overall and by probable type of diabetes

Documentation at diagnosis or in first yearAllType of diabetes
Type 2Type 1Unknown
n49251410
Age ≤5 years*8/40 (1)0/25 (0)8/6 (0)0/9 (1)
Positive islet-cell antibody*2/11 (36)0/11 (14)2/0 (12)0/0 (10)
Weight/age ≤15th percentile*4/34 (11)0/22 (3)4/5 (5)0/7 (3)
Weight/age ≥85th percentile21/17 (11)21/1 (3)0/9 (5)0/7 (3)
Acanthosis nigricans noted6/10 (33)6/7 (12)0/3 (11)0/0 (10)
Elevated C-peptide or insulin5/9 (35)5/5 (15)0/2 (12)0/2 (8)
Family history of type 2 diabetes12/14 (23)11/6 (8)1/5 (8)0/3 (7)
Oral hypoglycemic agent with or without insulin or no current medication >1 year after diagnosis17/31 (1)16/9 (0)1/12 (1)0/10 (0)
  • Data are n: presence/absence (not documented).

  • *

    * Classification criteria for type 1 diabetes;

  • classification criteria for type 2 diabetes.