Table 3—

Baseline characteristics by development of incident type 2 diabetes in nondiabetic participants, Rancho Bernardo Study, 1984–1987

CharacteristicIncident type 2 diabetes
P value*
NoYes
n82684
Age (years)65.9 (8.6)66.2 (8.4)0.73
Sex0.25
    Male330 (40.0)39 (46.4)
    Female496 (60.1)45 (53.6)
Exercise ≥3 times/week0.47
    No123 (14.9)15 (17.9)
    Yes703 (85.1)69 (82.1)
BMI (kg/m2)≤0.01
    Underweight/normal (<25.0)485 (58.7)37 (44.1)
    Overweight (25.0–29.9)292 (35.4)31 (36.9)
    Obese (≥30)49 (5.9)16 (19.1)
Smoking0.12
    Never347 (42.0)45 (53.6)
    Past373 (45.2)31 (36.9)
    Current106 (12.8)8 (9.5)
Average daily alcohol intake (g)0.03
    None272 (32.9)33 (39.3)
    1–30460 (55.7)35 (41.7)
    >3094 (11.4)16 (19.1)
Hypertension‡0.04
    Normal190 (23.0)10 (11.9)
    Prehypertensive279 (33.8)28 (33.3)
    Hypertensive357 (43.2)46 (54.8)
  • Data are means ± SD or n (%).

  • *

    * P value for age based on t test. All other P values based on Pearson’s χ2 test of association.

  • †Hypertension categories were based on SBP and DBP as follows: normal (SBP <120 mmHg and DBP <80 mmHg), prehypertensive (SBP 120–139 mmHg or DBP 80–99 mmHg), or hypertensive (SBP ≥140 mmHg or DBP ≥90 mmHg). In addition, individuals taking antihypertensive medication were categorized as hypertensive.