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Impact of baseline daily accelerometry steps on risk of chronic obstructive pulmonary disease (COPD)-related hospitalization or all-cause mortality. Stratified as less than 2,000 steps (n = 99), 2,000 to 3,999 steps (n = 104), and 4,000 or more steps (n = 121). P < 0.0001 for Kaplan-Meier log-rank test. Subjects at risk are below the x axis.
