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Fig. 2 | Respiratory Research

Fig. 2

From: Impact of COPD and anemia on motor and cognitive performance in the general older population: results from the English longitudinal study of ageing

Fig. 2

Visualization of the association between HB and outcome measures in participants with different levels of COPD. Depicted is the mean centered HB level against the estimated mean centered time to complete the motor task and the number of words memorized that were normalized by dividing mean cantered values by the standard deviation (a and b). The association between HB level and cognitive as well as motor-performance is shown for different groups of participants with COPD without confounder correction. a Shows that in participants with COPD the time needed to perform the motor task increased more strongly with lower HB levels. In other words, in more severely affected participants with COPD lower HB levels were more strongly associated with a longer time needed to complete the motor-performance task. Overall, the association between a lower HB level and a worse motor function was stronger in participants with severe and very severe COPD (bold dotted and straight lines 4 and 5) than in participants with mild and moderate COPD (lines 2 and 3). b Shows the association between HB levels and the number of words memorized. Overall, within most of the COPD groups, with higher levels of HB, slightly more words were memorized on average. However, no major differences between the different COPD groups were seen

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