Time Course of Oximetry and Oximetry-PEF Scores At Exacerbation. Time course of Oximetry and Oximetry-PEF scores from seven days prior (-7) to exacerbation onset (day 0, vertical line) and seven days into exacerbation of COPD. Data represent the mean and 95%CI for each score separately.
Hurst et al. BMC Pulmonary Medicine 2010 10:52 doi:10.1186/1471-2466-10-52