Table 1.

Baseline clinical and demographic features of Pima Indians aged ≥45 years old

	Nondiabetic subjects (N = 880)^a		Diabetic subjects (N = 1359)^a
	Mean ± SD	Centiles^b	Mean ± SD	Centiles^b
Age years	53.4 ± 10.0	46.3–57.8	53.2 ± 8.5	46.6–57.9
Duration of diabetes years	–	–	7.0 ± 7.2	0.4–11.7
Mean arterial pressure mm Hg	96.9 ± 14.1	86.7–105.3	100.3 ± 15.3	90.0–108.7
BMI kg/m²
Men	29.2 ± 6.1	25.0–32.0	30.7 ± 5.9	26.8–33.6
Women	33.5 ± 7.4	28.3–37.3	33.6 ± 7.2	28.4–37.0
Serum cholesterol mg/dL	182.2 ± 37.2	158.0–204.0	188.5 ± 46.2	159.0–212.0
2-hour plasma glucose mg/dL	122.9 ± 31.5	100.0–145.0	335.9 ± 123.7	229.5–428.0
Serum creatinine mg/dL	0.8 ± 0.3	0.7–0.9	0.8 ± 0.5	0.6–0.9

Baseline data were missing for mean arterial pressure in 19 nondiabetic and 12 diabetic subjects, for 2-hour plasma glucose in 15 nondiabetic and 162 diabetic subjects, for BMI in 15 nondiabetic and 21 diabetic subjects, and for cholesterol in 2 diabetic subjects.

Two hundred forty-six of the nondiabetic subjects developed diabetes during the follow-up. The baseline characteristics from their first nondiabetic and first diabetic examination are included in the table.

The 25th and 75th centiles.