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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Chest. 2015 Jan;147(1):56–67. doi: 10.1378/chest.13-2482

TABLE 2.

Age-Adjusted Baseline Means (SEs) and Percentages (SEs) of Study Variables Among Adults Aged 40 to 79 y by Mortality Status, NHANES III, 1988–1994

Study Variables Mortality Status (SE) P Value
Dead (n = 650) Alive (n = 740)
Age, y 66.8 (0.5) 56.4 (0.6) < .001
Education, y 11.6 (0.4) 12.6 (0.2) .029
Number of drinks, /mo 9.9 (1.8) 11.5 (1.0) .417
Systolic BP, mm Hg 131.4 (1.7) 125.2 (0.8) .003
High-density lipoprotein cholesterol, mM 1.2 (< 0.1) 1.3 (< 0.1) .107
Non-high-density lipoprotein cholesterol, mM 4.4 (0.2) 4.3 (< 0.1) .470
BMI, kg/m2 25.8 (0.7) 26.5 (0.3) .380
Albumin-creatinine ratio, a mg/g 10.2 (1.0) 6.0 (0.3) < .001
GFR, mL/min/1.73 m2 88.5 (1.6) 88.7 (0.8) .930
FEV1, mL 2386.0 (102.1) 2619.4 (44.3) .030
FVC, mL 3871.5 (124.0) 4080.2 (58.8) .124
FEV1 /FVC 0.61 (0.01) 0.64 (< 0.01) .001
Men, % 71.5 (3.4) 56.6 (2.4) < .001
White, % 84.0 (3.2) 86.7 (1.1) .390
Current smoker, % 58.9 (6.3) 34.4 (2.2) .001
Moderate-vigorous leisure-time physical activity, % 33.8 (4.1) 41.6 (3.0) .172
Vitamin or mineral supplement use during past 30 d, % 37.0 (5.8) 47.3 (2.6) .085
C-reactive protein > 3 mg/L, % 43.6 (5.4) 33.0 (3.0) .123
≥ Good health status, % 75.3 (3.8) 86.4 (1.6) .006
Diabetes, % 9.7 (1.4) 6.1 (0.9) .045
History of myocardial infarction, % 8.2 (2.6) 4.6 (1.2) .209
History of stroke, % 5.5 (2.5) 1.9 (0.7) .172

See Table 1 legend for expansion of abbreviations.

a

Back-transformed means.