CRP and chronic obstructive pulmonary disease: Men who were older (after adjustment for educational level), who had a lower educational level (after adjustment for age), who were in the lowest quartile of height, who had COPD, who had two or more chronic diseases, who were a former or current smoker, who had serum 25(OH)D levels up to 75 nmol/L, who were in the highest tertile of CRP, or who were in the first or second quartile of grip strength, had a higher odds for being in the intermediate as compared with the high PEFR trajectory.