Table 1 Socio-demographic status, depressive symptoms, inflammatory cytokines and pulmonary function of study participants aged 55 years and over
From: Systemic inflammation, depression and obstructive pulmonary function: a population-based study
|  | N, mean | %, ±SD |
|---|---|---|
Total | 2077 | Â |
Sex | Â | Â |
 Male | 763 | 36.7 |
 Female | 1314 | 63.3 |
Age (year, M ± SD) | 66.30 | ± 7.78 |
Smoking | Â | Â |
 Never smoker | 1638 | 78.9 |
 Past smoker | 247 | 11.9 |
 Present smoker | 192 | 9.2 |
BMI, mean (SD) | 23.61 | 3.68 |
Chronic inflammatory diseases | 1400 | 67.4 |
 Cardiovascular disease | 1279 | 61.6 |
 Diabetes | 318 | 15.3 |
 Rheumatoid arthritis | 254 | 12.2 |
 Chronic kidney disease | 11 | 0.5 |
 Osteoporosis, and others | 67 | 3.2 |
No. of chronic inflammatory diseases | 1.31 | 1.22 |
GDS Score(M ± SD) | 1.07 | ± 2.02 |
 GDS <5 | 1964 | 94.6 |
 GDS ≥ 5 | 113 | 5.4 |
C-reactive protein (g/dL) | Â | Â |
 Mean ± SD | 22.95 | ± 55.1 |
 Median, inter-quartile values | 9.65 | 4.26, 19.64 |
 Low CRP (≤9.65) | 1206 | 58.1 |
 High CRP (>9.65) | 871 | 41.9 |
IL-6 (pg/ml) | Â | Â |
 Mean ± SD | 3.19 | ± 6.73 |
 Median, inter-quartile values | 2.00 | 2.00, 2.50 |
 Low IL-6 (≤2.00) | 1338 | 64.4 |
 High IL-6 (>2.00) | 739 | 35.6 |
FEV1 (litre, years, M ± SD) | 1.81 | ± 0.56 |
FEV1 % Predicted (M ± SD) | 99.22 | ± 23.4 |
FEV1/FVC% predicted (M ± SD) | 86.43 | ± 13.3 |
FEV1% predicted <80%, n (%) | 374 | 18.0 |
FEV1/FVC% predicted <70.0% | 296 | 14.3 |