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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: The association between leukocyte telomere length and chronic obstructive pulmonary disease is partially mediated by inflammation: a meta-analysis and population-based mediation study

Fig. 2

A Telomere lengths of participants according to COPD status, stratified by sex. B Telomere lengths of participants according to COPD status, stratified by age. C Adjusted dose–response association between telomere length and risk for COPD. Telomere length was coded using an RCS function with three knots (dots in black) located at the 5th, 50th and 95th percentiles of its distribution. The Y-axis represents the adjusted odds ratio for COPD for any value of telomere length compared to a referent level of the 5th percentile of its distribution (NHANES 1999–2002). *denotes P < 0.05 and **denotes P < 0.01

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