Table 1

Characteristics at the time of enrollment into the Look AHEAD trial by intervention assignment

CharacteristicDSE (n = 2,563)ILI (n = 2,558)P value
Age0.15
 45–54 years2325
 55–64 years5556
 65–76 years2119
BMI0.16
 25.0–29.9 kg/m21416
 30.0–34.9 kg/m23536
 35.0–39.9 kg/m22926
 >40 kg/m22222
Sex0.75
 Female6060
 Male4040
History of cardiovascular disease*0.45
 No8686
 Yes1414
Race/ethnicity0.98
 African American1616
 American Indian55
 Hispanic/Latino1313
 Non-Hispanic white6363
 Other/mixed33
Diabetes duration (n = 40 missing)0.20
 <5 years4547
 ≥5 years5553
Education (n = 110 missing)0.54
 High school or less2120
 Post-high school3837
 College graduate4142
Hypertension0.34
 No1716
 Yes8384
Prescription medications, mean number
 Antihypertensive1.201.240.29
 Diabetes1.401.380.51
 Lipid lowering0.530.530.86
Annual household income (n = 503 missing)0.84
 <$40,0003434
 $40,000 to <$80,0003737
 ≥$80,0003029
Health insurance status
 Uninsured890.71
 Insured (self or work)77770.66
 Medicare/Medicaid21200.13
 Tricare/VA/military450.36
 Indian Health Service230.32
 Other/not reported440.56
Usual source of health care (n = 13 missing)0.73
 Private physician’s office7474
 Hospital clinic/outpatient1212
 Community health center88
 Other health-care facility56
 No usual source of care11
  • Data are % unless otherwise indicated. VA, Veterans Affairs.

  • *History of cardiovascular disease included myocardial infarction, coronary artery bypass, angioplasty/stent procedure, peripheral vascular disease, stroke, stable angina, and class I/II heart failure.

  • †Participants were able to indicate more than one source of health insurance.

  • ‡χ2 test.