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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: J Am Med Dir Assoc. 2016 Feb 23;17(6):508–513. doi: 10.1016/j.jamda.2016.01.007

Table 1.

Baseline characteristics of the 268 subjects with obstructive lung disease

Total (n=268) Subjects with ≥1 hospitalizations (n=225) Subjects free from hospitalization (n=43) p-value
Age, y 73.2 ± 2.9 73.2 ± 2.8 73.0 ± 3.1 0.580
Gender, %male 57.5 58.2 53.5 0.565
Race, %white 55.6 55.1 58.1 0.714
Site, %Memphis 51.1 49.8 58.1 0.315
Previous all-cause hospitalization, % 13.1 13.8 9.3 0.419
FEV1, %pred* 63 ± 18 62 ± 18 67 ± 20 0.121
Dyspnea
 None, % 50.6 48.6 60.5 0.245
 Mild, % 39.2 40.0 34.9
 Moderate, % 10.3 11.4 4.7
Physical activity, kcal/kg/wk 65 (36–100) 62 (35–95) 77 (44–106) 0.068
 Inactive 27.6 30.2 14.0 0.085
 Lifestyle active 56.3 54.7 65.1
 Exercisers 16.0 15.1 20.9
Tobacco exposure
 Ever, % 82.8 85.8 67.4 0.003
 Never, % 17.2 14.2 32.6
Quadriceps strength, Nm 103 ± 40 102 ± 40 107 ± 39 0.466
Grip strength, kg 64 ± 22 63 ± 21 66 ± 23 0.421
SPPB, %<10 31.3 33.8 21.4 0.115
BMI, kg/m2 25.4 ± 4.7 25.3 ± 4.7 26.0 ± 4.8 0.379
FFMI, kg/m2 17.0 ± 2.5 17.0 ± 2.5 17.1 ± 2.4 0.666
CRP, μg/ml 2.06 (1.16–3.64) 2.16 (1.24–3.78) 1.17 (0.79–2.39) <0.001
Heart and vascular disease, % 27.2 30.5 14.3 0.032
Chronic kidney disease, % 20.1 22.6 9.5 0.054
Diabetes, % 11.6 12.5 7.0 0.300
Cancer, % 17.2 15.1 27.9 0.041
Cognitive impairment, % 13.1 12.9 14.3 0.806

Abbreviations: BMI, body mass index; CRP, C-reactive protein; FEV1, forced expiratory volume in 1 second; FFMI, fat free mass index; FMI, fat mass index; IL-6, interleukin-6; SPPB, short physical performance battery; TNF-α, tumor necrosis factor-α.

Data are mean (SD) unless indicated otherwise.

*

From reference equations40

Median (IQR).