Table 1

HbA1c by FPG classification based on data from the baseline and second exams (1989–1995) of the SHS collected from American Indian participants who did not receive treatments for diabetes, were not on renal dialysis, and did not have a kidney transplant at the exams

Baseline exam FPG (mg/dL) (N = 2,849)Second exam FPG (mg/dL) (N = 1,670)*
≥126100–125<100≥126100–125<100
HbA1c (%)
 ≥6.5
  Frequency314334717034
  Row percentage89.59.41.140.640.019.4
  Column percentage54.22.50.440.68.25.3
 6.0–6.4
  Frequency739229196638
  Row percentage37.647.415.015.553.730.9
  Column percentage12.67.03.010.97.75.9
 4.75–5.9
  Frequency16793860368562371
  Row percentage9.854.935.36.856.137.1
  Column percentage28.871.463.138.965.758.0
 <4.75
  Frequency2525132017157197
  Row percentage4.242.153.74.642.353.1
  Column percentage4.319.133.59.718.430.8
  • *Those participants with FPG ≥126 mg/dL, HbA1c ≥6.5%, or on diabetes medications at the baseline exam were excluded.

  • Row percentage 89.5 = 100 × 314/(314 + 33 + 4).

  • Column percentage 54.2 = 100 × 314/(314 + 73 + 167 + 25).