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Characteristics of the study population in relation to CRP values
| CRP (mg/L) | 1st quartile: <0.46 | 2nd quartile: 0.46–0.96 | 3rd quartile: 0.97–2.21 | 4th quartile: >2.21 | P for trend |
|---|---|---|---|---|---|
| Age (years) | 40.5 ± 7.0 | 42.5 ± 7.2 | 42.6 ± 7.2 | 42.6 ± 7.4 | 0.0002 |
| Women (%) | 54.7 | 51.6 | 43.2 | 57.7 | 0.96 |
| Ex-smokers (%) | 28.6 | 30.8 | 24.8 | 34.0 | 0.38 |
| Current smokers (%) | 23.3 | 24.6 | 27.4 | 31.1 | 0.02 |
| Pack years | 5.0 ± 7.7 | 8.2 ± 13.3 | 9.1 ± 13.5 | 12.6 ± 16.6 | <0.0001 |
| BMI (kg/m2) | 23.3 ± 2.9 | 24.9 ± 3.5 | 26.3 ± 4.0 | 27.9 ± 5.2 | <0.0001 |
