Table 5

Sensitivity and specificity of the Oximetry Score in differentiating exacerbation onset from symptom days (day-to-day symptom variation) in COPD.

Oximetry Score*

Sensitivity

Specificity


+0.5

100%

54%

+1.0

71%

74%

+1.5

29%

89%

+2.0

14%

94%


*A +1SD change in score could represent, for example, a fall in oxygen saturation of 1% and a rise in heart rate of 5 min-1, or no change in oxygen saturation from baseline and a rise in heart rate of 10 min-1. See text for further details.

Hurst et al. BMC Pulmonary Medicine 2010 10:52   doi:10.1186/1471-2466-10-52

Open Data